MPEP § 2258.02 — Claiming Foreign Priority and Domestic Benefit in Reexamination (Annotated Rules)

§2258.02 Claiming Foreign Priority and Domestic Benefit in Reexamination

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 2258.02, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Claiming Foreign Priority and Domestic Benefit in Reexamination

This section addresses Claiming Foreign Priority and Domestic Benefit in Reexamination. Primary authority: 35 U.S.C. 119, 35 U.S.C. 119(e), and 35 U.S.C. 119(a). Contains: 10 requirements, 3 permissions, and 9 other statements.

Key Rules

Topic

AIA Effective Dates

18 rules
StatutoryRequiredAlways
[mpep-2258-02-a9b544f1c6e46d59b1801725]
Petition to Accept Delayed Certified Copy Required for Post-2013 Applications
Note:
A grantable petition, appropriate fee, and attachments must be filed in the application that matured into the patent being reexamined if it was filed on or after March 16, 2013.

However, where a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is required (such as, for example, when the application which matured in the patent to be reexamined was filed on or after March 16, 2013), a grantable petition, the appropriate fee, and any required attachments must be filed in the file of the application that matured into the patent to be reexamined. See MPEP § 215.02 for further guidance. In addition, a letter must be filed as a separate paper in the reexamination proceeding, notifying the Office that a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g), the appropriate fee, and any required attachments was or is being concurrently filed in the file of the patent to be reexamined. When a decision on the petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is rendered in the file of the application that matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(f)AIA Effective DatesAIA Overview and Effective DatesOrdering Certified Copies
StatutoryRequiredAlways
[mpep-2258-02-e88f17ad0a8bbce9985f805f]
Notification of Petition to Accept Delayed Certified Copy Required in Reexamination
Note:
A letter must be filed separately in the reexamination proceeding to notify the Office that a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) has been concurrently filed.

However, where a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is required (such as, for example, when the application which matured in the patent to be reexamined was filed on or after March 16, 2013), a grantable petition, the appropriate fee, and any required attachments must be filed in the file of the application that matured into the patent to be reexamined. See MPEP § 215.02 for further guidance. In addition, a letter must be filed as a separate paper in the reexamination proceeding, notifying the Office that a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g), the appropriate fee, and any required attachments was or is being concurrently filed in the file of the patent to be reexamined. When a decision on the petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is rendered in the file of the application that matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(f)AIA Effective DatesAIA Overview and Effective DatesOrdering Certified Copies
StatutoryRequiredAlways
[mpep-2258-02-7ac76083cdf40f38cccd3520]
Requirement for Unintentionally Delayed Priority Claim in Reexamination
Note:
Patent owners must file a grantable petition, application data sheet, certified foreign application copy, and fee if the patent matured from an application filed on or after September 16, 2012.
If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:
  • (a) A grantable petition for an unintentionally delayed priority claim under 37 CFR 1.55(e);
  • (b) An application data sheet (37 CFR 1.76(b)(6)), identifying the foreign application to which priority is claimed, by specifying the application number, country (or intellectual property authority), day, month, and year of its filing, unless previously submitted;
  • (c) A certified copy of the foreign application, unless previously submitted, or the exception in 37 CFR 1.55(h) is applicable;
  • (d) The petition fee as set forth in 37 CFR 1.17(m); and
  • (e) A statement that the entire delay between the date the priority claim was due under 37 CFR 1.55 and the date the priority claim was filed was unintentional. The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed priority claim more than two years after the date the foreign priority claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 214.02.
  • (f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(e), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined. When a decision on the petition for an unintentionally delayed priority claim under 37 CFR 1.55(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.55(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.
Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2258-02-c971e6086084db4399a15692]
Requirement for Filing Priority Claim in Pre-AIA Patent Reexamines
Note:
Patent owners must file a grantable petition, application data sheet or oath/declaration with foreign priority details, certified copy of the foreign application, and other required documents within the application that matured into the patent being reexamined.
If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:
  • (a) A grantable petition for an unintentionally delayed priority claim under 37 CFR 1.55(e);
  • (b) Unless previously submitted, either (i) an application data sheet (37 CFR 1.76(b)(6)) or (ii) an oath or declaration under 37 CFR 1.63; where the application data sheet, oath or declaration, whichever is filed, identifies the foreign application to which priority is claimed, by specifying the application number, country (or intellectual property authority), day, month, and year of its filing (see 37 CFR 1.55(n));
  • (c) A certified copy of the foreign application, unless previously submitted, or the exception in 37 CFR 1.55(h) is applicable;
  • (d) The petition fee as set forth in 37 CFR 1.17(m); and
  • (e) A statement that the entire delay between the date the priority claim was due under 37 CFR 1.55 and the date the priority claim was filed was unintentional. The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed priority claim more than two years after the date the foreign priority claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 214.02.
  • (f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(e), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.
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StatutoryInformativeAlways
[mpep-2258-02-14295759b0295aa2274ec1eb]
Notification Required for Concurrent Filing
Note:
Patent owners must file a letter notifying the Office of concurrent filings in the original application that matured into the patent to be reexamined.

If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(e), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.

Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2258-02-b9610bd612e1f27f069fc79a]
Petition for Unintentionally Delayed Benefit Claim in Reexamination
Note:
Patent owners must file a grantable petition, application data sheet, fee, and statement with the original application file if the patent matured from an application filed on or after September 16, 2012.
If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:
  • (a) A grantable petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e);
  • (b) An application data sheet including the reference required by 35 U.S.C. 120 and 37 CFR 1.78(d)(2) to the prior-filed application (37 CFR 1.76(b)(5)), unless previously submitted;
  • (c) The petition fee as set forth in 37 CFR 1.17(m); and
  • (d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(d)(3) and the date the benefit claim was filed was unintentional. The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.
  • (e) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.
Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2258-02-b5d038c7f4e21be58b7b7b46]
Notification for Concurrent Filing Required in Reexamination
Note:
Patent owners must file a letter notifying the Office of concurrent filings in the original application that matured into the patent being reexamined.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(e) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.

Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2258-02-06e1f58f89eedf4fef34c934]
Petition for Unintentionally Delayed Benefit Claim in Pre-AIA Patents During Reexamination
Note:
Patent owners must file a grantable petition and other required documents if the patent being reexamined matured from an application filed before September 16, 2012.
If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:
  • (a) A grantable petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e);
  • (b) If the patent owner does not choose to file an amendment as set forth in (e) below in the reexamination proceeding, an application data sheet including the reference required by 35 U.S.C. 120 and 37 CFR 1.78(d)(2) to the prior-filed application (37 CFR 1.76(b)(5)), unless previously submitted;
  • (c) The petition fee as set forth in 37 CFR 1.17(m); and
  • (d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(d)(3) and the date the benefit claim was filed was unintentional. The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.
  • (e) In the Reexamination Proceeding: If the patent owner does not choose to file an application data sheet as set forth in (b) above in the application which matured into the patent to be reexamined, an amendment inserting the reference required by 35 U.S.C. 120 and 37 CFR 1.78(d)(2) to the prior-filed application in the first sentence(s) of the specification following the title as set forth in 37 CFR 1.78(h), unless previously submitted; and
  • (f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.
Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2258-02-0fb801e748a23bd893bbdc73]
Notification of Concurrent Filings Required for Pre-AIA Patents in Reexamination
Note:
Patent owners must notify the Office if items (a)-(d) are concurrently filed for patents maturing from applications filed before September 16, 2012.

If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.

Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2258-02-c8e4e0b361acaaceab84fd79]
Specification Must Include Reference to Prior Application
Note:
For nonprovisional applications filed before September 16, 2012, the patent owner must include a reference to the prior-filed application in either the specification or an application data sheet.

Note, if the application which matured into the patent to be reexamined is a nonprovisional application filed before September 16, 2012, the patent owner must choose to either (i) file, in the application which matured into the patent to be reexamined, an application data sheet including the reference required by 35 U.S.C. 120 and 37 CFR 1.78(d)(2) to the prior-filed application (37 CFR 1.76(b)(5)), unless previously submitted; or (ii) file, in the reexamination proceeding, an amendment inserting the reference required by 35 U.S.C. 120 and 37 CFR 1.78(d)(2) to the prior-filed application in the first sentence(s) of the specification following the title as set forth in 37 CFR 1.78(h), unless previously submitted. See (b) and (e) above.

Jump to MPEP Source · 37 CFR 1.78(d)(2)AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2258-02-03120ecb780268e6e1a1e713]
Reference to Prior Application Required for Nonprovisional Patents Filed Before September 16, 2012
Note:
Patent owners must include a reference to the prior-filed application in either the nonprovisional application or during reexamination if the patent was filed before September 16, 2012.

Note, if the application which matured into the patent to be reexamined is a nonprovisional application filed before September 16, 2012, the patent owner must choose to either (i) file, in the application which matured into the patent to be reexamined, an application data sheet including the reference required by 35 U.S.C. 120 and 37 CFR 1.78(d)(2) to the prior-filed application (37 CFR 1.76(b)(5)), unless previously submitted; or (ii) file, in the reexamination proceeding, an amendment inserting the reference required by 35 U.S.C. 120 and 37 CFR 1.78(d)(2) to the prior-filed application in the first sentence(s) of the specification following the title as set forth in 37 CFR 1.78(h), unless previously submitted. See (b) and (e) above.

Jump to MPEP Source · 37 CFR 1.78(d)(2)AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2258-02-62c1682b37310f022d4830c1]
Petition and Attachments Must Be Filed in Correct Application
Note:
The petition for an unintentionally delayed claim under 35 U.S.C. 119(e) must be filed in the application that matured into the patent to be reexamined, along with a letter notifying the Office of concurrent filing.

In order to make such a correction in a utility or plant patent, the patent owner must file a grantable petition for an unintentionally delayed claim under 35 U.S.C. 119(e), pursuant to 37 CFR 1.78(c). The petition, and any required attachments (with the exception of an amendment to the first sentence(s) of the specification if the application which matured into the patent to be reexamined is a nonprovisional utility or plant application filed before September 16, 2012 – see subsection II.B.2. below), must be filed in the file of the application which matured into the patent to be reexamined, and a letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined, according to the following guidance:

Jump to MPEP Source · 37 CFR 1.78(c)AIA Effective DatesPlant Application ContentAIA Overview and Effective Dates
StatutoryRequiredAlways
[mpep-2258-02-4a815d1ed7218a98d34bb651]
Petition and Application Data Sheet for Unintentionally Delayed Claim
Note:
The patent owner must file a grantable petition, application data sheet, fee, statement of unintentional delay, and notification letter in the original application file if the patent is reexamined and matured from an AIA utility or plant application filed on or after September 16, 2012.
If the patent to be reexamined matured from a utility or plant application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:
  • (a) A grantable petition for an unintentionally delayed claim under 35 U.S.C. 119(e), pursuant to 37 CFR 1.78(c);
  • (b) An application data sheet including the reference required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3) to the prior-filed provisional application; unless previously submitted;
  • (c) The petition fee as set forth in 37 CFR 1.17(m); and
  • (d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(a)(4) and the date the benefit claim was filed was unintentional. The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.
  • (e) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.
Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2258-02-056f2fdb33fd516909525727]
Notification for Concurrent Filing Required in Reexamination
Note:
Patent owners must file a letter notifying the Office of concurrent filings in the original application that matured into the patent being reexamined.

If the patent to be reexamined matured from a utility or plant application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(e) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.

Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2258-02-60b3d8af702e969c0d4621dd]
Petition for Unintentionally Delayed Claim in Reexamination of Pre-AIA Patents
Note:
Patent owners must file a grantable petition and related documents if their patent matured from an application filed before September 16, 2012.
If the patent to be reexamined matured from a utility or plant application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:
  • (a) A grantable petition for an unintentionally delayed claim under 35 U.S.C. 119(e), pursuant to 37 CFR 1.78(c);
  • (b) If the patent owner does not choose to file an amendment as set forth in (e) below in the reexamination proceeding, an application data sheet including the reference required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3) to the prior-filed provisional application; unless previously submitted;
  • (c) The petition fee as set forth in 37 CFR 1.17(m); and
  • (d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(a)(4) and the date the benefit claim was filed was unintentional. The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.
  • (e) In the Reexamination Proceeding: If the patent owner does not choose to file an application data sheet as set forth in (b) above in the application which matured into the patent to be reexamined, an amendment inserting the reference required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3) to the prior-filed application in the first sentence(s) of the specification following the title as set forth in 37 CFR 1.78(h), unless previously submitted; and
  • (f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.
Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2258-02-741514c0c7389eddb7ddbd40]
Notification of Concurrent Filing Required for Utility or Plant Patents Filed Before September 16, 2012
Note:
Patent owners must file a letter notifying the Office of concurrent filings in the original application that matured into the patent being reexamined.

If the patent to be reexamined matured from a utility or plant application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(d), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.

Jump to MPEP SourceAIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2258-02-54678c5f95b7342ef24ce8e8]
Prior-Filed Application Reference Required for Nonprovisional Utility or Plant Applications Filed Before September 16, 2012
Note:
Patent owners must include a reference to the prior-filed application in either the application data sheet or the specification of patents matured from nonprovisional utility or plant applications filed before September 16, 2012.

Note, if the application which matured into the patent to be reexamined is a nonprovisional utility or plant application filed before September 16, 2012, the patent owner must choose to either (i) file, in the application which matured into the patent to be reexamined, an application data sheet including the reference required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3) to the prior-filed application (37 CFR 1.76(b)(5)), unless previously submitted; or (ii) file, in the reexamination proceeding, an amendment inserting the reference required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3) to the prior-filed application in the first sentence(s) of the specification following the title as set forth in 37 CFR 1.78(h), unless previously submitted. See (b) and (e) above.

Jump to MPEP Source · 37 CFR 1.78(a)(3)AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2258-02-32e1635c66160d07db655fa9]
Specification Must Include Prior Application Reference
Note:
The patent owner must include a reference to the prior-filed application in either the original application or during reexamination, as required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3).

Note, if the application which matured into the patent to be reexamined is a nonprovisional utility or plant application filed before September 16, 2012, the patent owner must choose to either (i) file, in the application which matured into the patent to be reexamined, an application data sheet including the reference required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3) to the prior-filed application (37 CFR 1.76(b)(5)), unless previously submitted; or (ii) file, in the reexamination proceeding, an amendment inserting the reference required by 35 U.S.C. 119(e) and 37 CFR 1.78(a)(3) to the prior-filed application in the first sentence(s) of the specification following the title as set forth in 37 CFR 1.78(h), unless previously submitted. See (b) and (e) above.

Jump to MPEP Source · 37 CFR 1.78(a)(3)AIA Effective DatesAIA Overview and Effective DatesAIA vs Pre-AIA Practice
Topic

Correcting Benefit Claims

17 rules
StatutoryPermittedAlways
[mpep-2258-02-d947d1e09c5bf3e28238c1c9]
Patent Owner Can Correct Missing Earlier Application Reference
Note:
The patent owner may correct the failure to claim benefit under 35 U.S.C. 120 of an earlier filed copending U.S. patent application during reexamination.

The patent owner may also correct the failure to adequately claim (in the application for the patent to be reexamined) benefit under 35 U.S.C. 120 of an earlier filed copending U.S. patent application. For a patent to be reexamined, a grantable petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e) must be filed. The petition, and any required attachments (with the exception of an amendment to the first sentence(s) of the specification if the application which matured into the patent to be reexamined is a nonprovisional application filed before September 16, 2012 – see subsection II.A.2. below), must be filed in the file of the application which matured into the patent to be reexamined, and a letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined, according to the following guidance:

Jump to MPEP Source · 37 CFR 1.78(e)Correcting Benefit ClaimsCopendency RequirementDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryRequiredAlways
[mpep-2258-02-18d7fb1996b2b008931b3027]
Petition for Unintentionally Delayed Benefit Claim Required for Reexamination
Note:
A grantable petition must be filed to claim unintentionally delayed benefit under 37 CFR 1.78(e) for a patent to be reexamined.

The patent owner may also correct the failure to adequately claim (in the application for the patent to be reexamined) benefit under 35 U.S.C. 120 of an earlier filed copending U.S. patent application. For a patent to be reexamined, a grantable petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e) must be filed. The petition, and any required attachments (with the exception of an amendment to the first sentence(s) of the specification if the application which matured into the patent to be reexamined is a nonprovisional application filed before September 16, 2012 – see subsection II.A.2. below), must be filed in the file of the application which matured into the patent to be reexamined, and a letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined, according to the following guidance:

Jump to MPEP Source · 37 CFR 1.78(e)Correcting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryRequiredAlways
[mpep-2258-02-0ff434db0775a232c9b6d04d]
Petition and Attachments Must Be Filed in Correct Application
Note:
The petition for reexamining a patent and any required attachments (except for specific cases) must be filed in the application that matured into the patent, with a separate letter notifying the Office of concurrent filing.

The patent owner may also correct the failure to adequately claim (in the application for the patent to be reexamined) benefit under 35 U.S.C. 120 of an earlier filed copending U.S. patent application. For a patent to be reexamined, a grantable petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e) must be filed. The petition, and any required attachments (with the exception of an amendment to the first sentence(s) of the specification if the application which matured into the patent to be reexamined is a nonprovisional application filed before September 16, 2012 – see subsection II.A.2. below), must be filed in the file of the application which matured into the patent to be reexamined, and a letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined, according to the following guidance:

Jump to MPEP Source · 37 CFR 1.78(e)Correcting Benefit ClaimsBenefit Claim in SpecificationTiming of Copendency
StatutoryInformativeAlways
[mpep-2258-02-6e89ecd310f771a545333e28]
Unintentional Delay Statement Required for Benefit Claim
Note:
Patent owners must file a statement that the entire delay between due and filed dates for benefit claims was unintentional, especially if more than two years have passed.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(d)(3) and the date the benefit claim was filed was unintentional.

Jump to MPEP SourceCorrecting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryRequiredAlways
[mpep-2258-02-7d700279f0b9ac5850359410]
Requirement for Unintentional Delay Explanation
Note:
Patent owners must provide additional explanation if the delay in filing a benefit claim exceeds two years and is more than unintentional.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.

Jump to MPEP SourceCorrecting Benefit ClaimsContinuation Benefit ClaimsPetition for Delayed Benefit Claim
StatutoryInformativeAlways
[mpep-2258-02-66960d94db9808ef7238fe2b]
Copy of Decision Required for Reexamination File
Note:
When a decision on an unintentionally delayed benefit claim is made, a copy must be placed in the reexamination file.

When a decision on the petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.78(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.78(e)Correcting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryInformativeAlways
[mpep-2258-02-8d34456101a8c3f99c3608d4]
Unintentional Delay Statement for Benefit Claim
Note:
Patent owner must file a statement that the entire delay between due and filed dates of benefit claim was unintentional.

If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(d)(3) and the date the benefit claim was filed was unintentional.

Jump to MPEP SourceCorrecting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryRequiredAlways
[mpep-2258-02-3056fb3c00fa838454e6852c]
Requirement for Unintentional Delay Explanation
Note:
Patent owners must provide additional explanation if a delayed benefit claim is filed more than two years after due date or if there's a question about the delay being unintentional.

If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.

Jump to MPEP SourceCorrecting Benefit ClaimsContinuation Benefit ClaimsPetition for Delayed Benefit Claim
StatutoryInformativeAlways
[mpep-2258-02-c080b4cfbf488798e4fd3263]
Decision on Unintentionally Delayed Benefit Claim Must Be Placed in Reexamination File
Note:
When a decision on an unintentionally delayed benefit claim under 37 CFR 1.78(e) is rendered for the original application, it must be included in the reexamination file.

When a decision on the petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of any application data sheet, where applicable, which was determined by the Office in its decision to meet the requirements of 37 CFR 1.78(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.78(e)Correcting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryInformativeAlways
[mpep-2258-02-841eab6b0e2b3dac131f0588]
Requirement for Petition for Unintentionally Delayed Benefit Claim
Note:
Describes the requirements for filing a petition when an unintentionally delayed benefit claim under 37 CFR 1.78(e) is needed.

For further guidance on the requirements for a petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e), see MPEP § 211.04.

Jump to MPEP Source · 37 CFR 1.78(e)Correcting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryInformativeAlways
[mpep-2258-02-3b04f50d5831474034a27e9f]
Unintentional Delay Statement for Benefit Claim
Note:
Patent owner must file a statement that the entire delay between due and filed dates of benefit claim was unintentional in reexamining patents maturing from applications filed on or after September 16, 2012.

If the patent to be reexamined matured from a utility or plant application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(a)(4) and the date the benefit claim was filed was unintentional.

Jump to MPEP SourceCorrecting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryRequiredAlways
[mpep-2258-02-b631667cd47ba22374a9511c]
Petition for Unintentional Delay Over Two Years Must Explain Circumstances
Note:
A person filing a petition to accept a delayed benefit claim more than two years after the due date must provide an explanation establishing that the entire delay was unintentional.

If the patent to be reexamined matured from a utility or plant application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.

Jump to MPEP SourceCorrecting Benefit ClaimsContinuation Benefit ClaimsPetition for Delayed Benefit Claim
StatutoryInformativeAlways
[mpep-2258-02-8c5b871bbd1c86c02d82b98c]
Unintentional Delay Statement for Benefit Claim
Note:
Patent owner must file a statement that the entire delay between due and filed dates of benefit claim was unintentional.

If the patent to be reexamined matured from a utility or plant application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(d) A statement that the entire delay between the date the benefit claim was due under 37 CFR 1.78(a)(4) and the date the benefit claim was filed was unintentional.

Jump to MPEP SourceCorrecting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
StatutoryRequiredAlways
[mpep-2258-02-e4068c62c8230bb463b8be31]
Requirement for Unintentional Delay Explanation
Note:
Patent owners must explain any delay over two years in filing a benefit claim if it was unintentional.

If the patent to be reexamined matured from a utility or plant application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed benefit claim more than two years after the date the benefit claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 211.04.

Jump to MPEP SourceCorrecting Benefit ClaimsContinuation Benefit ClaimsPetition for Delayed Benefit Claim
StatutoryRequiredAlways
[mpep-2258-02-2edf733ba873dbef7ed16157]
Notification Required for Concurrent Petitions
Note:
A letter must be filed in the reexamination proceeding notifying the Office that a petition and attachments are concurrently being filed in the application which matured into the patent to be reexamined.

The patent owner may also restore the benefit of a provisional application where the filing of the application which matured into the patent to be reexamined (i.e., the subsequent nonprovisional application) was unintentionally delayed, in accordance with 37 CFR 1.78(b). The patent owner must file a grantable petition to restore the benefit of a provisional application under 37 CFR 1.78(b), and any required attachments, including an application data sheet meeting the requirements set forth in 37 CFR 1.78(b), in the file of the application which matured into the patent to be reexamined (i.e., the subsequent application as specified in 37 CFR 1.78(b)). A letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined. Note that a design application cannot claim the benefit of a provisional application.

Jump to MPEP Source · 37 CFR 1.78(b)Correcting Benefit ClaimsBenefit Claim in ADSDesign Foreign Priority (6 Months)
StatutoryInformativeAlways
[mpep-2258-02-0f910af119d11b3e1e310a80]
Copy of Decision Required for Reexamination File
Note:
When a decision on the petition to restore provisional application benefit is rendered in the matured patent file, a copy of that decision must also be placed in the reexamination proceeding file.

When a decision on the petition to restore the benefit of a provisional application is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.78(b) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.78(b)Correcting Benefit ClaimsContinuation Benefit ClaimsBenefit Claim in ADS
StatutoryInformativeAlways
[mpep-2258-02-469730f9a3943dba6f820f0a]
Requirements for Restoring Provisional Application Benefit
Note:
The rule outlines the necessary conditions for filing a petition to restore the benefit of a provisional application under 37 CFR 1.78(b).

For further guidance on the requirements for a grantable petition to restore the benefit of a provisional application under 37 CFR 1.78(b), see MPEP § 211.01(a), subsection II.

Jump to MPEP Source · 37 CFR 1.78(b)Correcting Benefit ClaimsBenefit Claim in SpecificationContinuation Benefit Claims
Topic

Priority and Benefit Claims

8 rules
StatutoryRequiredAlways
[mpep-2258-02-6ae3e72c664ddd43ba461960]
Petition and Attachments Must Be Filed in Application File
Note:
The patent owner must file the petition and required attachments in the application that matured into the patent to be reexamined, and notify the Office separately.

The patent owner may obtain the right of foreign priority under 35 U.S.C. 119(a)-(d) where the claim for foreign priority was not previously made. However, a grantable petition for an unintentionally delayed priority claim under 37 CFR 1.55(e) must be filed. The petition, and any required attachments, must be filed in the file of the application which matured into the patent to be reexamined, and a letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined, according to the following guidance:

Jump to MPEP Source · 37 CFR 1.55(e)Priority and Benefit ClaimsPetition for Delayed Priority ClaimUnintentional Delay Standard
StatutoryInformativeAlways
[mpep-2258-02-24c591b00b0e22cd0ee4df55]
Unintentional Delay for Priority Claim
Note:
Patent owner must file a statement that the entire delay between due date and filing of priority claim was unintentional. Additional information may be required if the delay exceeds two years.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(e) A statement that the entire delay between the date the priority claim was due under 37 CFR 1.55 and the date the priority claim was filed was unintentional.

Jump to MPEP SourcePriority and Benefit ClaimsAIA Effective DatesPetition for Delayed Priority Claim
StatutoryInformativeAlways
[mpep-2258-02-99a8bb824cf80c5926de54bc]
Notification Requirement for Concurrent Filing
Note:
Patent owners must file a letter notifying the Office of concurrent filings in the original application that matured into the patent being reexamined.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(f) In the Reexamination Proceeding: A letter, as a separate paper, notifying the Office that items (a)-(e), as applicable, was or is concurrently being filed in the file of the application which matured into the patent to be reexamined.

Jump to MPEP SourcePriority and Benefit ClaimsAIA Effective DatesPetition for Delayed Priority Claim
StatutoryInformativeAlways
[mpep-2258-02-8e4e47f15873f6f9c91594c4]
Copy of Application Data Sheet Required for Reexamination
Note:
If the petition is granted, a copy of the application data sheet meeting the requirements of 37 CFR 1.55(e) must be placed in the reexamination proceeding file.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.55(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP SourcePriority and Benefit ClaimsAIA Effective DatesPetition for Delayed Priority Claim
StatutoryInformativeAlways
[mpep-2258-02-539d6cd2f4c56344c62e84d7]
Unintentional Delay in Filing Priority Claim Required
Note:
Patent owners must file a statement that the entire delay between due and filed priority claims was unintentional, especially if more than two years have passed.

If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

(e) A statement that the entire delay between the date the priority claim was due under 37 CFR 1.55 and the date the priority claim was filed was unintentional.

Jump to MPEP SourcePriority and Benefit ClaimsAIA Effective DatesPetition for Delayed Priority Claim
StatutoryInformativeAlways
[mpep-2258-02-7c4cd7e1ac239392511059cb]
Copy of Application Data Sheet Required for Reexamination
Note:
If the petition for an unintentionally delayed priority claim is granted, a copy of the application data sheet must be placed in the reexamination file.

When a decision on the petition for an unintentionally delayed priority claim under 37 CFR 1.55(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet, oath, or declaration, which was determined by the Office in its decision to meet the requirements of 37 CFR 1.55(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(e)Priority and Benefit ClaimsPetition for Delayed Priority ClaimUnintentional Delay Standard
StatutoryInformativeAlways
[mpep-2258-02-488d1fb4802a5eae367688bf]
Application Data Sheet Required for Reexamination
Note:
If the petition to claim foreign priority under 35 U.S.C. 119(e) is granted, a copy of the application data sheet must be placed in the reexamination file.

When a decision on the petition for an unintentionally delayed claim under 35 U.S.C. 119(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 35 U.S.C. 119(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP SourcePriority and Benefit ClaimsUnintentional Delay StandardDelayed Benefit/Priority Claims
StatutoryInformativeAlways
[mpep-2258-02-1702364a42be0a1825714380]
Copy of Application Data Sheet Required for Reexamination
Note:
If the petition is granted, a copy of any application data sheet that meets the requirements of 35 U.S.C. 119(e) and other applicable requirements must be placed in the file of the reexamination proceeding.

When a decision on the petition for an unintentionally delayed claim under 35 U.S.C. 119(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of any application data sheet, where applicable, which was determined by the Office in its decision to meet the requirements of 35 U.S.C. 119(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP SourcePriority and Benefit ClaimsUnintentional Delay StandardDelayed Benefit/Priority Claims
Topic

Benefit Claim in ADS

6 rules
StatutoryPermittedAlways
[mpep-2258-02-128d0318c67fca8b8775c262]
Patent Owner Can Correct Foreign Priority or Domestic Benefit Claims During Reexamination
Note:
The patent owner is permitted to correct any failure to adequately claim foreign priority or domestic benefit during reexamination, but renewing previously made claims for these benefits is not required.

The patent owner may correct the failure to adequately claim foreign priority or domestic benefit in a patent to be reexamined during reexamination in accordance with the guidelines set forth in this section. However, a renewal of previously made claims for foreign priority under 35 U.S.C. 119 or domestic benefit under 35 U.S.C. 119(e) or 120, is not necessary during reexamination. Note that a design application cannot claim the benefit of a provisional application. See MPEP § 211.02, subsection III; see also MPEP § 1504.20 for benefit information specific to design applications.

Jump to MPEP SourceBenefit Claim in ADSCorrecting Benefit ClaimsDesign Claim Form
StatutoryInformativeAlways
[mpep-2258-02-b4a16537de7ac0695d39f236]
Application Data Sheet Required for Filing
Note:
If the petition is granted, a copy of the application data sheet must be placed in the reexamination proceeding file.

When a decision on the petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.78(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.78(e)Benefit Claim in ADSCorrecting Benefit ClaimsBenefit Claim in Specification
StatutoryInformativeAlways
[mpep-2258-02-edfc6a0db0b2aacb3ed875e5]
Application Data Sheet Required for Filing
Note:
If the petition is granted, a copy of any application data sheet must be placed in the reexamination proceeding file.

When a decision on the petition for an unintentionally delayed benefit claim under 37 CFR 1.78(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of any application data sheet, where applicable, which was determined by the Office in its decision to meet the requirements of 37 CFR 1.78(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.78(e)Benefit Claim in ADSCorrecting Benefit ClaimsBenefit Claim in Specification
StatutoryPermittedAlways
[mpep-2258-02-dd3e941a5aeb3c983647eaf5]
Correcting Provisional Benefit Claim in Reexamined Patents
Note:
The patent owner can correct the failure to claim benefit from an earlier provisional application during reexamination of a utility or plant patent.

The patent owner may correct, in a patent to be reexamined which matured from a utility or plant application, the failure to adequately claim benefit under 35 U.S.C. 119(e) of an earlier filed provisional application. A design application cannot claim the benefit of a provisional application. See MPEP § 211.02; see also MPEP § 1504.20 for benefit information specific to design applications.

Jump to MPEP SourceBenefit Claim in ADSCorrecting Benefit ClaimsDesign Claim Form
StatutoryRequiredAlways
[mpep-2258-02-016d1a56bfc3b4aed45cacd2]
Petition and ADS Required for Provisional Benefit Restoration
Note:
Patent owners must file a grantable petition along with an application data sheet meeting specific requirements to restore the benefit of a provisional application in the subsequent nonprovisional application that matured into the patent being reexamined.

The patent owner may also restore the benefit of a provisional application where the filing of the application which matured into the patent to be reexamined (i.e., the subsequent nonprovisional application) was unintentionally delayed, in accordance with 37 CFR 1.78(b). The patent owner must file a grantable petition to restore the benefit of a provisional application under 37 CFR 1.78(b), and any required attachments, including an application data sheet meeting the requirements set forth in 37 CFR 1.78(b), in the file of the application which matured into the patent to be reexamined (i.e., the subsequent application as specified in 37 CFR 1.78(b)). A letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined. Note that a design application cannot claim the benefit of a provisional application.

Jump to MPEP Source · 37 CFR 1.78(b)Benefit Claim in ADSCorrecting Benefit ClaimsBenefit Claim in Specification
StatutoryInformativeAlways
[mpep-2258-02-36f4b6655f5eec2e37e1fa3d]
Application Data Sheet Required for Filing
Note:
If the petition to restore a provisional application benefit is granted, an application data sheet meeting specific requirements must be placed in the reexamination file.

When a decision on the petition to restore the benefit of a provisional application is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.78(b) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.78(b)Benefit Claim in ADSCorrecting Benefit ClaimsBenefit Claim in Specification
Topic

Petition for Delayed Priority Claim

6 rules
StatutoryRequiredAlways
[mpep-2258-02-a5711e430943226b7f3e053a]
Petition Required for Unintentionally Delayed Foreign Priority Claim
Note:
The patent owner must file a grantable petition under 37 CFR 1.55(e) to claim unintentionally delayed foreign priority.

The patent owner may obtain the right of foreign priority under 35 U.S.C. 119(a)-(d) where the claim for foreign priority was not previously made. However, a grantable petition for an unintentionally delayed priority claim under 37 CFR 1.55(e) must be filed. The petition, and any required attachments, must be filed in the file of the application which matured into the patent to be reexamined, and a letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined, according to the following guidance:

Jump to MPEP Source · 37 CFR 1.55(e)Petition for Delayed Priority ClaimUnintentional Delay StandardDelayed Benefit/Priority Claims
StatutoryRequiredAlways
[mpep-2258-02-04f67249f9f657a25bf5a377]
Petition for Delayed Foreign Priority Claim After Two Years
Note:
A person filing a petition to accept a delayed foreign priority claim more than two years after the due date must provide an explanation establishing that the entire delay was unintentional.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed priority claim more than two years after the date the foreign priority claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 214.02.

Jump to MPEP SourcePetition for Delayed Priority ClaimUnintentional Delay StandardDelayed Benefit/Priority Claims
StatutoryInformativeAlways
[mpep-2258-02-f43019a9c2cae84b76dc7515]
Decision on Unintentionally Delayed Priority Claim Must Be Placed in Reexamination File
Note:
When a decision is rendered on an unintentionally delayed priority claim under 37 CFR 1.55(e) for the application that matured into the patent being reexamined, a copy of this decision must also be placed in the file of the reexamination proceeding.

If the patent to be reexamined matured from an application filed on or after September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

When a decision on the petition for an unintentionally delayed priority claim under 37 CFR 1.55(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding.

Jump to MPEP SourcePetition for Delayed Priority ClaimUnintentional Delay StandardDelayed Benefit/Priority Claims
StatutoryRequiredAlways
[mpep-2258-02-e1881659faa52cfd011a57e9]
Petition for Delayed Foreign Priority Claim Requires Explanation
Note:
A petition to accept a delayed foreign priority claim more than two years after due date must provide an explanation establishing the entire delay was unintentional.

If the patent to be reexamined matured from an application filed before September 16, 2012, the patent owner must file in the File of the Application Which Matured into the Patent to be Reexamined:

The Director may require additional information where there is a question whether the delay was unintentional. Additionally, a person filing a petition to accept a delayed priority claim more than two years after the date the foreign priority claim was due is required to provide additional explanation of the circumstances surrounding the delay that establishes that the entire delay was unintentional. See MPEP § 214.02.

Jump to MPEP SourcePetition for Delayed Priority ClaimUnintentional Delay StandardDelayed Benefit/Priority Claims
StatutoryInformativeAlways
[mpep-2258-02-59c19a9cc0d3658d1c7c4392]
Decision on Unintentionally Delayed Priority Petition Must Be Placed in Reexamination File
Note:
When a decision on an unintentionally delayed priority petition under 37 CFR 1.55(e) is rendered for the application that matured into the patent being reexamined, it must be placed in the reexamination file.

When a decision on the petition for an unintentionally delayed priority claim under 37 CFR 1.55(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet, oath, or declaration, which was determined by the Office in its decision to meet the requirements of 37 CFR 1.55(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(e)Petition for Delayed Priority ClaimUnintentional Delay StandardDelayed Benefit/Priority Claims
StatutoryInformativeAlways
[mpep-2258-02-83dbb6602b0259ff091e1569]
Requirement for Unintentionally Delayed Priority Petition
Note:
Guidance on the requirements for filing a petition for an unintentionally delayed priority claim under 37 CFR 1.55(e).

For further guidance on the requirements for a grantable petition for an unintentionally delayed priority claim under 37 CFR 1.55(e), see MPEP § 214.02.

Jump to MPEP Source · 37 CFR 1.55(e)Petition for Delayed Priority ClaimUnintentional Delay StandardDelayed Benefit/Priority Claims
Topic

Foreign Priority Claims

6 rules
StatutoryPermittedAlways
[mpep-2258-02-581ce3b1d6ed36a88e2354eb]
Petition to Restore Foreign Priority Allowed After Delayed Filing
Note:
Patent owners can file a petition and attachments in the specified application to restore their right of foreign priority if the subsequent application was filed late.

The patent owner may also restore the right of foreign priority under 35 U.S.C. 119(a)-(d) where the filing of the subsequent application was delayed, in accordance with 37 CFR 1.55(c). A grantable petition to restore the right of foreign priority and any required attachments, including an application data sheet, must be filed in the application specified in 37 CFR 1.55(c), not in the reexamination proceeding. A letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application specified in 37 CFR 1.55(c) (identifying the application number).

Jump to MPEP Source · 37 CFR 1.55(c)Foreign Priority ClaimsPriority and Benefit ClaimsDomestic Benefit Claims (35 U.S.C. 120/121)
StatutoryRequiredAlways
[mpep-2258-02-6993c1bdd42112e367b17cbf]
Petition for Foreign Priority Must Be Filed in Specified Application
Note:
A petition to restore foreign priority and required attachments must be filed in the specified application, not during reexamination.

The patent owner may also restore the right of foreign priority under 35 U.S.C. 119(a)-(d) where the filing of the subsequent application was delayed, in accordance with 37 CFR 1.55(c). A grantable petition to restore the right of foreign priority and any required attachments, including an application data sheet, must be filed in the application specified in 37 CFR 1.55(c), not in the reexamination proceeding. A letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application specified in 37 CFR 1.55(c) (identifying the application number).

Jump to MPEP Source · 37 CFR 1.55(c)Foreign Priority ClaimsDirector Authority and Petitions (MPEP 1000)Ex Parte Reexamination
StatutoryRequiredAlways
[mpep-2258-02-5656c8894389b9a969f30592]
Notification Required for Concurrent Foreign Priority Petition
Note:
A letter must be filed in the reexamination proceeding to notify the Office that a foreign priority petition and attachments are concurrently being filed in another application.

The patent owner may also restore the right of foreign priority under 35 U.S.C. 119(a)-(d) where the filing of the subsequent application was delayed, in accordance with 37 CFR 1.55(c). A grantable petition to restore the right of foreign priority and any required attachments, including an application data sheet, must be filed in the application specified in 37 CFR 1.55(c), not in the reexamination proceeding. A letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application specified in 37 CFR 1.55(c) (identifying the application number).

Jump to MPEP Source · 37 CFR 1.55(c)Foreign Priority ClaimsEx Parte ReexaminationPriority and Benefit Claims
StatutoryInformativeAlways
[mpep-2258-02-1dd5c62a41cc980811bd6d81]
Decision on Foreign Priority Petition Must Be Placed in Reexamination File
Note:
When a decision is made on the petition to restore foreign priority, it must be included in both the application file and the reexamination proceeding file.

When a decision on the petition to restore the right of foreign priority under 37 CFR 1.55(c) is rendered in the file of the application specified in 37 CFR 1.55(c), a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.55(c) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(c)Foreign Priority ClaimsDirector Authority and Petitions (MPEP 1000)Ex Parte Reexamination
StatutoryInformativeAlways
[mpep-2258-02-5731ea3bea0bdca484d94f71]
Application Data Sheet Required for Filing
Note:
If the petition to restore foreign priority is granted, a copy of the application data sheet must be placed in the reexamination proceeding file.

When a decision on the petition to restore the right of foreign priority under 37 CFR 1.55(c) is rendered in the file of the application specified in 37 CFR 1.55(c), a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 37 CFR 1.55(c) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(c)Foreign Priority ClaimsEx Parte ReexaminationPriority and Benefit Claims
StatutoryInformativeAlways
[mpep-2258-02-9183b68d520160a0cf25f6b8]
Requirements for Grantable Petition to Restore Foreign Priority
Note:
Describes the necessary conditions for filing a successful petition to restore foreign priority under 37 CFR 1.55(c).

For further guidance on the requirements for a grantable petition to restore the right of foreign priority under 37 CFR 1.55(c), see MPEP § 213.03, subsection III.

Jump to MPEP Source · 37 CFR 1.55(c)Foreign Priority ClaimsDirector Authority and Petitions (MPEP 1000)Priority and Benefit Claims
Topic

Continuation Benefit Claims

3 rules
StatutoryProhibitedAlways
[mpep-2258-02-2971e2e441cdacce7143306d]
Design Applications Cannot Claim Provisional Benefits
Note:
A design application is not allowed to claim the benefit of a provisional application during reexamination.

The patent owner may correct the failure to adequately claim foreign priority or domestic benefit in a patent to be reexamined during reexamination in accordance with the guidelines set forth in this section. However, a renewal of previously made claims for foreign priority under 35 U.S.C. 119 or domestic benefit under 35 U.S.C. 119(e) or 120, is not necessary during reexamination. Note that a design application cannot claim the benefit of a provisional application. See MPEP § 211.02, subsection III; see also MPEP § 1504.20 for benefit information specific to design applications.

Jump to MPEP SourceContinuation Benefit ClaimsDesign Claim FormDesign Benefit Claims
StatutoryProhibitedAlways
[mpep-2258-02-c6f798ddddef063c8d4ebd8e]
Design Applications Cannot Claim Provisional Benefit
Note:
A design application is not allowed to claim the benefit of an earlier provisional application.

The patent owner may correct, in a patent to be reexamined which matured from a utility or plant application, the failure to adequately claim benefit under 35 U.S.C. 119(e) of an earlier filed provisional application. A design application cannot claim the benefit of a provisional application. See MPEP § 211.02; see also MPEP § 1504.20 for benefit information specific to design applications.

Jump to MPEP SourceContinuation Benefit ClaimsDesign Claim FormDesign Benefit Claims
StatutoryProhibitedAlways
[mpep-2258-02-fa98df94b8374195dcd5510d]
Design Applications Cannot Claim Provisional Benefits
Note:
A design application is not permitted to claim the benefit of a provisional application, regardless of filing delays.

The patent owner may also restore the benefit of a provisional application where the filing of the application which matured into the patent to be reexamined (i.e., the subsequent nonprovisional application) was unintentionally delayed, in accordance with 37 CFR 1.78(b). The patent owner must file a grantable petition to restore the benefit of a provisional application under 37 CFR 1.78(b), and any required attachments, including an application data sheet meeting the requirements set forth in 37 CFR 1.78(b), in the file of the application which matured into the patent to be reexamined (i.e., the subsequent application as specified in 37 CFR 1.78(b)). A letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined. Note that a design application cannot claim the benefit of a provisional application.

Jump to MPEP Source · 37 CFR 1.78(b)Continuation Benefit ClaimsDesign Claim FormDesign Benefit Claims
Topic

Ordering Certified Copies

2 rules
StatutoryRequiredAlways
[mpep-2258-02-6201cd9c671b93b3c49d2800]
Petition to Accept Delayed Certified Copy Required in Reexamination
Note:
A grantable petition, appropriate fee, and required attachments must be filed concurrently with the application that matured into the patent being reexamined.

However, where a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is required (such as, for example, when the application which matured in the patent to be reexamined was filed on or after March 16, 2013), a grantable petition, the appropriate fee, and any required attachments must be filed in the file of the application that matured into the patent to be reexamined. See MPEP § 215.02 for further guidance. In addition, a letter must be filed as a separate paper in the reexamination proceeding, notifying the Office that a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g), the appropriate fee, and any required attachments was or is being concurrently filed in the file of the patent to be reexamined. When a decision on the petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is rendered in the file of the application that matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(f)Ordering Certified CopiesDocument Supply FeesCertified Copies of Documents
StatutoryInformativeAlways
[mpep-2258-02-3c1d974b3ed70de3e3d837fa]
Decision on Petition Must Be Placed in Reexamination File
Note:
When a decision is made on a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g), that decision must also be placed in the file of the reexamination proceeding.

However, where a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is required (such as, for example, when the application which matured in the patent to be reexamined was filed on or after March 16, 2013), a grantable petition, the appropriate fee, and any required attachments must be filed in the file of the application that matured into the patent to be reexamined. See MPEP § 215.02 for further guidance. In addition, a letter must be filed as a separate paper in the reexamination proceeding, notifying the Office that a petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g), the appropriate fee, and any required attachments was or is being concurrently filed in the file of the patent to be reexamined. When a decision on the petition to accept a delayed certified copy under 37 CFR 1.55(f) or (g) is rendered in the file of the application that matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.55(f)Ordering Certified CopiesDocument Supply FeesCertified Copies of Documents
Topic

Unintentional Delay Standard

2 rules
StatutoryInformativeAlways
[mpep-2258-02-9d235ced97c416af3b0197fd]
Copy of Decision Required for Reexamination
Note:
A copy of the decision on an unintentionally delayed claim under 35 U.S.C. 119(e) must be placed in both the original application and reexamination files.

When a decision on the petition for an unintentionally delayed claim under 35 U.S.C. 119(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of the application data sheet which was determined by the Office in its decision to meet the requirements of 35 U.S.C. 119(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP SourceUnintentional Delay StandardDelayed Benefit/Priority ClaimsPriority and Benefit Claims
StatutoryInformativeAlways
[mpep-2258-02-0ced38ae9fa7e51f1a30f416]
Decision on Unintentionally Delayed Claim Must Be Placed in Reexamination File
Note:
When a decision on an unintentionally delayed claim under 35 U.S.C. 119(e) is rendered for the original application, it must be included in the reexamination file along with any applicable application data sheet.

When a decision on the petition for an unintentionally delayed claim under 35 U.S.C. 119(e) is rendered in the file of the application which matured into the patent to be reexamined, a copy of the decision will also be placed in the file of the reexamination proceeding. In addition, if the petition is granted, a copy of any application data sheet, where applicable, which was determined by the Office in its decision to meet the requirements of 35 U.S.C. 119(e) (and all other applicable requirements), will also be placed in the file of the reexamination proceeding.

Jump to MPEP SourceUnintentional Delay StandardDelayed Benefit/Priority ClaimsPriority and Benefit Claims
Topic

Benefit Claim in Specification

2 rules
StatutoryInformativeAlways
[mpep-2258-02-12c3e25d81df888609e31845]
Petition for Unintentionally Delayed Benefit Claim Under 119(e)
Note:
Guidance on filing petitions for unintentionally delayed benefit claims under 35 U.S.C. 119(e) as per 37 CFR 1.78(c).

For further guidance on petitions for an unintentionally delayed benefit claim under 35 U.S.C. 119(e), pursuant to 37 CFR 1.78(c), see MPEP § 211.04.

Jump to MPEP Source · 37 CFR 1.78(c)Benefit Claim in SpecificationContinuation Benefit ClaimsPetition for Delayed Benefit Claim
StatutoryPermittedAlways
[mpep-2258-02-82c00f85c5bba71cec9cfdaa]
Patent Owner Can Restore Provisional Application Benefit If Nonprovisional Filing Was Delayed Unintentionally
Note:
The patent owner may restore the benefit of a provisional application if the subsequent nonprovisional application's filing was unintentionally delayed, by filing a grantable petition and required attachments.

The patent owner may also restore the benefit of a provisional application where the filing of the application which matured into the patent to be reexamined (i.e., the subsequent nonprovisional application) was unintentionally delayed, in accordance with 37 CFR 1.78(b). The patent owner must file a grantable petition to restore the benefit of a provisional application under 37 CFR 1.78(b), and any required attachments, including an application data sheet meeting the requirements set forth in 37 CFR 1.78(b), in the file of the application which matured into the patent to be reexamined (i.e., the subsequent application as specified in 37 CFR 1.78(b)). A letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined. Note that a design application cannot claim the benefit of a provisional application.

Jump to MPEP Source · 37 CFR 1.78(b)Benefit Claim in SpecificationContinuation Benefit ClaimsConversion to Nonprovisional
Topic

Foreign Priority Claim Requirements

1 rules
StatutoryPermittedAlways
[mpep-2258-02-8540ff67ee5d3d47b9955802]
Certified Copy Needed for Foreign Priority in Reexamination
Note:
The patent owner must submit a certified copy to perfect foreign priority claim after the patent is granted during reexamination if it was claimed before grant.

The patent owner may obtain the right of foreign priority under 35 U.S.C. 119(a)-(d) where a claim for priority had been made before the patent was granted, and it is only necessary for submission of the certified copy in the reexamination proceeding to perfect priority.

Jump to MPEP SourceForeign Priority Claim RequirementsOrdering Certified CopiesForeign Priority Claims
Topic

Plant Application Content

1 rules
StatutoryRequiredAlways
[mpep-2258-02-6b1f48a49049d4b796adb27a]
Petition for Unintentionally Delayed Claim Under 35 U.S.C. 119(e)
Note:
Patent owners must file a grantable petition and supporting documents to correct unintentionally delayed claims in utility or plant patents, following specific filing procedures.

In order to make such a correction in a utility or plant patent, the patent owner must file a grantable petition for an unintentionally delayed claim under 35 U.S.C. 119(e), pursuant to 37 CFR 1.78(c). The petition, and any required attachments (with the exception of an amendment to the first sentence(s) of the specification if the application which matured into the patent to be reexamined is a nonprovisional utility or plant application filed before September 16, 2012 – see subsection II.B.2. below), must be filed in the file of the application which matured into the patent to be reexamined, and a letter must be filed in the reexamination proceeding as a separate paper notifying the Office that the petition and accompanying attachments was or is concurrently being filed in the application (identifying the application number) which matured into the patent to be reexamined, according to the following guidance:

Jump to MPEP Source · 37 CFR 1.78(c)Plant Application ContentUnintentional Delay StandardReexamination Order

Citations

Primary topicCitation
Benefit Claim in ADS
Continuation Benefit Claims
35 U.S.C. § 119
Foreign Priority Claim Requirements
Foreign Priority Claims
Petition for Delayed Priority Claim
Priority and Benefit Claims
35 U.S.C. § 119(a)
AIA Effective Dates
Benefit Claim in ADS
Benefit Claim in Specification
Continuation Benefit Claims
Plant Application Content
Priority and Benefit Claims
Unintentional Delay Standard
35 U.S.C. § 119(e)
AIA Effective Dates
Correcting Benefit Claims
35 U.S.C. § 120
AIA Effective Dates37 CFR § 1.17(m)
AIA Effective Dates
Petition for Delayed Priority Claim
Priority and Benefit Claims
37 CFR § 1.55
Foreign Priority Claims37 CFR § 1.55(c)
AIA Effective Dates
Petition for Delayed Priority Claim
Priority and Benefit Claims
37 CFR § 1.55(e)
AIA Effective Dates
Ordering Certified Copies
37 CFR § 1.55(f)
AIA Effective Dates37 CFR § 1.55(h)
AIA Effective Dates37 CFR § 1.55(n)
AIA Effective Dates37 CFR § 1.63
AIA Effective Dates37 CFR § 1.76(b)(5)
AIA Effective Dates37 CFR § 1.76(b)(6)
AIA Effective Dates37 CFR § 1.78(a)(3)
AIA Effective Dates
Correcting Benefit Claims
37 CFR § 1.78(a)(4)
Benefit Claim in ADS
Benefit Claim in Specification
Continuation Benefit Claims
Correcting Benefit Claims
37 CFR § 1.78(b)
AIA Effective Dates
Benefit Claim in Specification
Plant Application Content
37 CFR § 1.78(c)
AIA Effective Dates37 CFR § 1.78(d)(2)
AIA Effective Dates
Correcting Benefit Claims
37 CFR § 1.78(d)(3)
AIA Effective Dates
Benefit Claim in ADS
Correcting Benefit Claims
37 CFR § 1.78(e)
AIA Effective Dates37 CFR § 1.78(h)
Benefit Claim in ADS
Continuation Benefit Claims
MPEP § 1504.20
Correcting Benefit ClaimsMPEP § 211.01(a)
Benefit Claim in ADS
Continuation Benefit Claims
MPEP § 211.02
AIA Effective Dates
Benefit Claim in Specification
Correcting Benefit Claims
MPEP § 211.04
Foreign Priority ClaimsMPEP § 213.03
AIA Effective Dates
Petition for Delayed Priority Claim
Priority and Benefit Claims
MPEP § 214.02
AIA Effective Dates
Ordering Certified Copies
MPEP § 215.02

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31