MPEP § 216 — Entitlement to Priority (Annotated Rules)

§216 Entitlement to Priority

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

This page consolidates and annotates all enforceable requirements under MPEP § 216, 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.

Entitlement to Priority

This section addresses Entitlement to Priority. Primary authority: 35 U.S.C. 111(a), 35 U.S.C. 371, and 35 U.S.C. 112. Contains: 6 requirements, 1 guidance statement, 7 permissions, and 6 other statements.

Key Rules

Topic

Ordering Certified Copies

10 rules
StatutoryRequiredAlways
[mpep-216-0a66a99d4628f2ec2caf41d7]
Translation Needed for Non-English Foreign Application
Note:
If a foreign application is not in English, a translation must be provided when filing the certified copy to overcome the effective date of a reference.

In those cases where the applicant files the certified copy of the foreign application for the purpose of overcoming the effective date of a reference, a translation is required if the certified copy is not in the English language. When the examiner requires the filing of the certified copy, the translation should also be required at the same time. If an English language translation of a non-English language foreign application is required, the translation must be that of the certified copy (of the foreign application as filed) and it must be filed together with a statement that the translation of the certified copy is accurate. When the necessary certified copy and translation are filed to overcome the date of the reference, the examiner’s action, if the examiner determines that the applicant is not entitled to the priority date, is to repeat the rejection on the reference, stating the reasons why the applicant is not considered entitled to the date. If it is determined that the applicant is entitled to the date, the rejection is withdrawn in view of the priority date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of Documents
StatutoryRequiredAlways
[mpep-216-58a1bd812463956283b76a10]
Translation Required with Certified Copy
Note:
When the examiner requires a certified copy, an English translation must also be filed if the original is not in English.

In those cases where the applicant files the certified copy of the foreign application for the purpose of overcoming the effective date of a reference, a translation is required if the certified copy is not in the English language. When the examiner requires the filing of the certified copy, the translation should also be required at the same time. If an English language translation of a non-English language foreign application is required, the translation must be that of the certified copy (of the foreign application as filed) and it must be filed together with a statement that the translation of the certified copy is accurate. When the necessary certified copy and translation are filed to overcome the date of the reference, the examiner’s action, if the examiner determines that the applicant is not entitled to the priority date, is to repeat the rejection on the reference, stating the reasons why the applicant is not considered entitled to the date. If it is determined that the applicant is entitled to the date, the rejection is withdrawn in view of the priority date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of Documents
StatutoryRequiredAlways
[mpep-216-75ab878ccbba1b202d7fd6e4]
Translation Requirement for Non-English Foreign Applications
Note:
If a non-English foreign application is filed, an accurate English translation of the certified copy must be provided.

In those cases where the applicant files the certified copy of the foreign application for the purpose of overcoming the effective date of a reference, a translation is required if the certified copy is not in the English language. When the examiner requires the filing of the certified copy, the translation should also be required at the same time. If an English language translation of a non-English language foreign application is required, the translation must be that of the certified copy (of the foreign application as filed) and it must be filed together with a statement that the translation of the certified copy is accurate. When the necessary certified copy and translation are filed to overcome the date of the reference, the examiner’s action, if the examiner determines that the applicant is not entitled to the priority date, is to repeat the rejection on the reference, stating the reasons why the applicant is not considered entitled to the date. If it is determined that the applicant is entitled to the date, the rejection is withdrawn in view of the priority date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of Documents
StatutoryInformativeAlways
[mpep-216-383bf5184b7fab4ab532e7f9]
Requirement for Certified Copy and Translation to Overcome Reference Date
Note:
The examiner must repeat the rejection if they determine the applicant is not entitled to the priority date, or withdraw it if the applicant is deemed entitled.

In those cases where the applicant files the certified copy of the foreign application for the purpose of overcoming the effective date of a reference, a translation is required if the certified copy is not in the English language. When the examiner requires the filing of the certified copy, the translation should also be required at the same time. If an English language translation of a non-English language foreign application is required, the translation must be that of the certified copy (of the foreign application as filed) and it must be filed together with a statement that the translation of the certified copy is accurate. When the necessary certified copy and translation are filed to overcome the date of the reference, the examiner’s action, if the examiner determines that the applicant is not entitled to the priority date, is to repeat the rejection on the reference, stating the reasons why the applicant is not considered entitled to the date. If it is determined that the applicant is entitled to the date, the rejection is withdrawn in view of the priority date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of Documents
StatutoryInformativeAlways
[mpep-216-eef976fab1dd1039325d96a7]
Examiner Must Study Certified Copy for Priority Date
Note:
The examiner must review the certified copy, if in English, to determine if the applicant is entitled to the priority date.

If the certified copy, and translation if necessary, is already in the file when the examiner finds a reference with the intervening effective date, the examiner will study the certified copy, if it is in the English language, to determine if the applicant is entitled to the priority date. If the applicant is found to be entitled to the priority date, the reference is not relied upon as prior art, but may be cited to applicant on form PTO-892. If the applicant is found not entitled to the date, the unpatentable claims are rejected on the reference with an explanation. If the certified copy is not in the English language and there is no translation, the examiner may reject the unpatentable claims and at the same time require an English translation (the translation must be that of the certified copy (of the foreign application as filed) that is submitted together with a statement that the translation of the certified copy is accurate) for the purpose of determining the applicant’s right to rely on the foreign filing date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of DocumentsForeign Filing Licenses
StatutoryPermittedAlways
[mpep-216-d7985fe1475bbb208ed54c36]
Examiner Reviews Certified Copy for Priority Date
Note:
If the applicant is found to be entitled to the priority date, the reference is not relied upon as prior art but may be cited to the applicant on form PTO-892.

If the certified copy, and translation if necessary, is already in the file when the examiner finds a reference with the intervening effective date, the examiner will study the certified copy, if it is in the English language, to determine if the applicant is entitled to the priority date. If the applicant is found to be entitled to the priority date, the reference is not relied upon as prior art, but may be cited to applicant on form PTO-892. If the applicant is found not entitled to the date, the unpatentable claims are rejected on the reference with an explanation. If the certified copy is not in the English language and there is no translation, the examiner may reject the unpatentable claims and at the same time require an English translation (the translation must be that of the certified copy (of the foreign application as filed) that is submitted together with a statement that the translation of the certified copy is accurate) for the purpose of determining the applicant’s right to rely on the foreign filing date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of DocumentsForeign Filing Licenses
StatutoryInformativeAlways
[mpep-216-dcad8aba3bff718bbaeccbce]
Unpatentable Claims Rejected on Reference if Not Entitled to Date
Note:
If the applicant is found not entitled to the priority date, unpatentable claims are rejected based on a reference with an explanation.

If the certified copy, and translation if necessary, is already in the file when the examiner finds a reference with the intervening effective date, the examiner will study the certified copy, if it is in the English language, to determine if the applicant is entitled to the priority date. If the applicant is found to be entitled to the priority date, the reference is not relied upon as prior art, but may be cited to applicant on form PTO-892. If the applicant is found not entitled to the date, the unpatentable claims are rejected on the reference with an explanation. If the certified copy is not in the English language and there is no translation, the examiner may reject the unpatentable claims and at the same time require an English translation (the translation must be that of the certified copy (of the foreign application as filed) that is submitted together with a statement that the translation of the certified copy is accurate) for the purpose of determining the applicant’s right to rely on the foreign filing date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of DocumentsForeign Filing Licenses
StatutoryRequiredAlways
[mpep-216-b65b1aeba6c61ab3f8c3b143]
Translation Required for Foreign Application Certified Copy
Note:
Examiner may reject unpatentable claims and require an accurate English translation of the certified copy to determine entitlement to the foreign filing date.

If the certified copy, and translation if necessary, is already in the file when the examiner finds a reference with the intervening effective date, the examiner will study the certified copy, if it is in the English language, to determine if the applicant is entitled to the priority date. If the applicant is found to be entitled to the priority date, the reference is not relied upon as prior art, but may be cited to applicant on form PTO-892. If the applicant is found not entitled to the date, the unpatentable claims are rejected on the reference with an explanation. If the certified copy is not in the English language and there is no translation, the examiner may reject the unpatentable claims and at the same time require an English translation (the translation must be that of the certified copy (of the foreign application as filed) that is submitted together with a statement that the translation of the certified copy is accurate) for the purpose of determining the applicant’s right to rely on the foreign filing date.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of DocumentsForeign Filing Licenses
StatutoryRecommendedAlways
[mpep-216-4940ec89c66ccc153841db59]
Nonprovisional and Foreign Application Inventors Must Match
Note:
The nonprovisional application and the certified copy of the foreign application must name the same inventor or have at least one joint inventor in common for priority to be claimed.

The foreign application may have been filed by and in the name of the assignee or legal representative or agent of the inventor, as applicant. In such cases, if the certified copy of the foreign application corresponds with the one identified in an application data sheet, or for applications filed prior to September 16, 2012, in an application data sheet or in the oath or declaration filed under 37 CFR 1.63 (see 37 CFR 1.55(n)) and no discrepancies appear, it may be assumed that the nonprovisional application is entitled to claim priority to the foreign application. If the nonprovisional application and the certified copy of the foreign application do not name the same inventor or do not have at least one joint inventor in common, the priority date should be refused until the inconsistency is resolved. See also MPEP § 213.02.

Jump to MPEP Source · 37 CFR 1.63Ordering Certified CopiesCertified Copies of DocumentsAIA Effective Dates
MPEP GuidancePermittedAlways
[mpep-216-a5268e4b5922d84e3aed484d]
Examiner Rejects Claims Based on Intervening Reference
Note:
If an examiner finds an intervening reference at any point, claims considered unpatentable over it are rejected without regard to the priority date (unless certified copy is filed).

The subject matter of the application is not examined to determine whether the applicant is actually entitled to the priority of the foreign filing date unless such determination is required for patentability reasons. For example, when examining an application under the first inventor to file provisions of the AIA, the examiner considers the merits of an applicant’s claim of priority when a reference by the inventive entity is found with an effective date between the date of the foreign filing and the date of filing in the United States. This would be necessary in order to determine whether the reference's prior art date is within the grace period for the application under examination and when an interference situation is under consideration. If at the time of making an action the examiner has found such an intervening reference, the examiner simply rejects whatever claims may be considered unpatentable thereover, without paying any attention to the priority date (assuming the certified copy of the priority papers has not yet been filed). The applicant in reply may argue the rejection if it is of such a nature that it can be argued, or present the foreign papers for the purpose of overcoming the date of the reference. If the applicant argues the reference, the examiner, in the next action in the application, may specifically require the foreign papers to be filed in addition to repeating the rejection if it is still considered applicable, or the examiner may merely continue the rejection.

Jump to MPEP SourceOrdering Certified CopiesCertified Copies of DocumentsAIA Effective Dates
Topic

Components Required for Filing Date

5 rules
StatutoryPermittedAlways
[mpep-216-128fe527c041d22456aa130b]
Requirement for Provisional and Complete Specifications
Note:
In UK applications, a certified provisional specification may be submitted along with an optional complete specification.

In applications filed from the United Kingdom there may be submitted a certified copy of the “provisional specification,” which may also in some cases be accompanied by a copy of the “complete specification.” The nature and function of the United Kingdom provisional specification is described in an article in the Journal of the Patent Office Society of November 1936, pages 770-774. According to United Kingdom law the provisional specification need not contain a complete disclosure of the invention in the sense of 35 U.S.C. 112, but need only describe the general nature of the invention, and neither claims nor drawings are required. Consequently, in considering such provisional specifications, the question of completeness of disclosure is important. If it is found that the United Kingdom provisional specification is insufficient for lack of disclosure, reliance may then be had on the complete specification and its date, if one has been presented, the complete specification then being treated as a different application than the provisional specification. In some instances, the specification and drawing of the foreign application may have been filed at a date subsequent to the filing of the petition in the foreign country. Even though the petition is called the application and the filing date of this petition is the filing date of the application in a particular country, the date accorded here is the date on which the specification and drawing were filed.

Jump to MPEP SourceComponents Required for Filing DateOrdering Certified CopiesCertified Copies of Documents
StatutoryInformativeAlways
[mpep-216-2fa8b18eb15852dc5a7cef13]
Provisional Specification Requirement for UK Filing
Note:
The provisional specification must describe the general nature of the invention but need not include complete disclosure as required by U.S. law.

In applications filed from the United Kingdom there may be submitted a certified copy of the “provisional specification,” which may also in some cases be accompanied by a copy of the “complete specification.” The nature and function of the United Kingdom provisional specification is described in an article in the Journal of the Patent Office Society of November 1936, pages 770-774. According to United Kingdom law the provisional specification need not contain a complete disclosure of the invention in the sense of 35 U.S.C. 112, but need only describe the general nature of the invention, and neither claims nor drawings are required. Consequently, in considering such provisional specifications, the question of completeness of disclosure is important. If it is found that the United Kingdom provisional specification is insufficient for lack of disclosure, reliance may then be had on the complete specification and its date, if one has been presented, the complete specification then being treated as a different application than the provisional specification. In some instances, the specification and drawing of the foreign application may have been filed at a date subsequent to the filing of the petition in the foreign country. Even though the petition is called the application and the filing date of this petition is the filing date of the application in a particular country, the date accorded here is the date on which the specification and drawing were filed.

Jump to MPEP SourceComponents Required for Filing DatePatent Application ContentPetition for Filing Date
StatutoryRequiredAlways
[mpep-216-5212d31aa62222c55032b407]
UK Provisional Specification Does Not Require Complete Disclosure
Note:
The UK provisional specification must only describe the general nature of the invention and does not require claims or drawings. If insufficient for lack of disclosure, reliance may be on the complete specification.

In applications filed from the United Kingdom there may be submitted a certified copy of the “provisional specification,” which may also in some cases be accompanied by a copy of the “complete specification.” The nature and function of the United Kingdom provisional specification is described in an article in the Journal of the Patent Office Society of November 1936, pages 770-774. According to United Kingdom law the provisional specification need not contain a complete disclosure of the invention in the sense of 35 U.S.C. 112, but need only describe the general nature of the invention, and neither claims nor drawings are required. Consequently, in considering such provisional specifications, the question of completeness of disclosure is important. If it is found that the United Kingdom provisional specification is insufficient for lack of disclosure, reliance may then be had on the complete specification and its date, if one has been presented, the complete specification then being treated as a different application than the provisional specification. In some instances, the specification and drawing of the foreign application may have been filed at a date subsequent to the filing of the petition in the foreign country. Even though the petition is called the application and the filing date of this petition is the filing date of the application in a particular country, the date accorded here is the date on which the specification and drawing were filed.

Jump to MPEP SourceComponents Required for Filing DatePatent Application ContentPetition for Filing Date
StatutoryPermittedAlways
[mpep-216-b20d5a7d6171acf8621237bf]
Specification and Drawing Date for Foreign Applications
Note:
The date of the specification and drawing of a foreign application may be different from the filing date of the petition in the foreign country.

In applications filed from the United Kingdom there may be submitted a certified copy of the “provisional specification,” which may also in some cases be accompanied by a copy of the “complete specification.” The nature and function of the United Kingdom provisional specification is described in an article in the Journal of the Patent Office Society of November 1936, pages 770-774. According to United Kingdom law the provisional specification need not contain a complete disclosure of the invention in the sense of 35 U.S.C. 112, but need only describe the general nature of the invention, and neither claims nor drawings are required. Consequently, in considering such provisional specifications, the question of completeness of disclosure is important. If it is found that the United Kingdom provisional specification is insufficient for lack of disclosure, reliance may then be had on the complete specification and its date, if one has been presented, the complete specification then being treated as a different application than the provisional specification. In some instances, the specification and drawing of the foreign application may have been filed at a date subsequent to the filing of the petition in the foreign country. Even though the petition is called the application and the filing date of this petition is the filing date of the application in a particular country, the date accorded here is the date on which the specification and drawing were filed.

Jump to MPEP SourceComponents Required for Filing DatePetition for Filing DatePatent Application Content
StatutoryInformativeAlways
[mpep-216-ae82f17226ffba740667382a]
Filing Date Is Specification and Drawing Date
Note:
The filing date is determined by the date on which the specification and drawings were filed, not the petition date.

In applications filed from the United Kingdom there may be submitted a certified copy of the “provisional specification,” which may also in some cases be accompanied by a copy of the “complete specification.” The nature and function of the United Kingdom provisional specification is described in an article in the Journal of the Patent Office Society of November 1936, pages 770-774. According to United Kingdom law the provisional specification need not contain a complete disclosure of the invention in the sense of 35 U.S.C. 112, but need only describe the general nature of the invention, and neither claims nor drawings are required. Consequently, in considering such provisional specifications, the question of completeness of disclosure is important. If it is found that the United Kingdom provisional specification is insufficient for lack of disclosure, reliance may then be had on the complete specification and its date, if one has been presented, the complete specification then being treated as a different application than the provisional specification. In some instances, the specification and drawing of the foreign application may have been filed at a date subsequent to the filing of the petition in the foreign country. Even though the petition is called the application and the filing date of this petition is the filing date of the application in a particular country, the date accorded here is the date on which the specification and drawing were filed.

Jump to MPEP SourceComponents Required for Filing DatePetition for Filing DateFiling Date Requirements
Topic

Assignee as Applicant Signature

4 rules
StatutoryPermittedAlways
[mpep-216-29167acb98455f99f207bf5e]
Assignee or Inventor Agent as Applicant
Note:
The foreign application can be filed by the assignee, legal representative, or agent of the inventor. Priority is granted if the certified copy matches the application data sheet or oath/declaration.

The foreign application may have been filed by and in the name of the assignee or legal representative or agent of the inventor, as applicant. In such cases, if the certified copy of the foreign application corresponds with the one identified in an application data sheet, or for applications filed prior to September 16, 2012, in an application data sheet or in the oath or declaration filed under 37 CFR 1.63 (see 37 CFR 1.55(n)) and no discrepancies appear, it may be assumed that the nonprovisional application is entitled to claim priority to the foreign application. If the nonprovisional application and the certified copy of the foreign application do not name the same inventor or do not have at least one joint inventor in common, the priority date should be refused until the inconsistency is resolved. See also MPEP § 213.02.

Jump to MPEP Source · 37 CFR 1.63Assignee as Applicant SignatureApplicant and Assignee Filing Under AIAAIA Effective Dates
MPEP GuidanceRequiredAlways
[mpep-216-931e2dd12c5036dbf18e4804]
Application Subject Not Examined for Priority Entitlement Unless Required
Note:
The subject matter of the application is not examined to determine if the applicant has a valid priority claim unless it affects patentability.

The subject matter of the application is not examined to determine whether the applicant is actually entitled to the priority of the foreign filing date unless such determination is required for patentability reasons. For example, when examining an application under the first inventor to file provisions of the AIA, the examiner considers the merits of an applicant’s claim of priority when a reference by the inventive entity is found with an effective date between the date of the foreign filing and the date of filing in the United States. This would be necessary in order to determine whether the reference's prior art date is within the grace period for the application under examination and when an interference situation is under consideration. If at the time of making an action the examiner has found such an intervening reference, the examiner simply rejects whatever claims may be considered unpatentable thereover, without paying any attention to the priority date (assuming the certified copy of the priority papers has not yet been filed). The applicant in reply may argue the rejection if it is of such a nature that it can be argued, or present the foreign papers for the purpose of overcoming the date of the reference. If the applicant argues the reference, the examiner, in the next action in the application, may specifically require the foreign papers to be filed in addition to repeating the rejection if it is still considered applicable, or the examiner may merely continue the rejection.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAAIA Effective Dates
MPEP GuidancePermittedAlways
[mpep-216-d7e26559d0a14f6ac663cb2e]
Applicant Can Argue Rejection or Present Foreign Papers
Note:
The applicant may argue a rejection if it can be argued, or present foreign papers to overcome the reference date.

The subject matter of the application is not examined to determine whether the applicant is actually entitled to the priority of the foreign filing date unless such determination is required for patentability reasons. For example, when examining an application under the first inventor to file provisions of the AIA, the examiner considers the merits of an applicant’s claim of priority when a reference by the inventive entity is found with an effective date between the date of the foreign filing and the date of filing in the United States. This would be necessary in order to determine whether the reference's prior art date is within the grace period for the application under examination and when an interference situation is under consideration. If at the time of making an action the examiner has found such an intervening reference, the examiner simply rejects whatever claims may be considered unpatentable thereover, without paying any attention to the priority date (assuming the certified copy of the priority papers has not yet been filed). The applicant in reply may argue the rejection if it is of such a nature that it can be argued, or present the foreign papers for the purpose of overcoming the date of the reference. If the applicant argues the reference, the examiner, in the next action in the application, may specifically require the foreign papers to be filed in addition to repeating the rejection if it is still considered applicable, or the examiner may merely continue the rejection.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAAIA Effective Dates
MPEP GuidancePermittedAlways
[mpep-216-99e4a8062ddf00a3f29a97ae]
Foreign Papers Required If Arguing Reference
Note:
If the applicant argues a reference, the examiner may require foreign papers to be filed and repeat the rejection or continue the rejection.

The subject matter of the application is not examined to determine whether the applicant is actually entitled to the priority of the foreign filing date unless such determination is required for patentability reasons. For example, when examining an application under the first inventor to file provisions of the AIA, the examiner considers the merits of an applicant’s claim of priority when a reference by the inventive entity is found with an effective date between the date of the foreign filing and the date of filing in the United States. This would be necessary in order to determine whether the reference's prior art date is within the grace period for the application under examination and when an interference situation is under consideration. If at the time of making an action the examiner has found such an intervening reference, the examiner simply rejects whatever claims may be considered unpatentable thereover, without paying any attention to the priority date (assuming the certified copy of the priority papers has not yet been filed). The applicant in reply may argue the rejection if it is of such a nature that it can be argued, or present the foreign papers for the purpose of overcoming the date of the reference. If the applicant argues the reference, the examiner, in the next action in the application, may specifically require the foreign papers to be filed in addition to repeating the rejection if it is still considered applicable, or the examiner may merely continue the rejection.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAAIA Effective Dates
Topic

AIA Effective Dates

3 rules
StatutoryInformativeAlways
[mpep-216-0be6cde863dd179835acb89a]
Examiner Reviews Priority Claim and Foreign Application Copy
Note:
The examiner reviews the priority claim and certified foreign application copy for formal defects and correspondence to the identified application, but does not examine the substance of the claims unless there are obvious formal issues.

When the claim to priority and the certified copy of the foreign application are received while the application is pending before the examiner, the examiner generally makes no examination of the papers except to see that they contain no obvious formal defects and correspond in number, date, and country to the application identified in the application data sheet for an application filed on or after September 16, 2012, or oath or declaration or application data sheet for an application filed prior to September 16, 2012. In addition, for original applications filed under 35 U.S.C. 111(a) (other than design applications) and international applications entering the national stage under 35 U.S.C. 371, the examiner should make sure that the claim for foreign priority is timely. Examiners may use form paragraph 2.21.01 to notify applicant that the foreign priority claim is untimely. See also MPEP § 214.03.

Jump to MPEP SourceAIA Effective DatesOath/Declaration in National StageNational Stage Entry Requirements
StatutoryPermittedAlways
[mpep-216-4b65e33f39dd54e809d7a873]
Nonprovisional Application Entitled to Foreign Priority
Note:
If the certified foreign application matches the data sheet or oath/declaration and no discrepancies are found, the nonprovisional application can claim priority.

The foreign application may have been filed by and in the name of the assignee or legal representative or agent of the inventor, as applicant. In such cases, if the certified copy of the foreign application corresponds with the one identified in an application data sheet, or for applications filed prior to September 16, 2012, in an application data sheet or in the oath or declaration filed under 37 CFR 1.63 (see 37 CFR 1.55(n)) and no discrepancies appear, it may be assumed that the nonprovisional application is entitled to claim priority to the foreign application. If the nonprovisional application and the certified copy of the foreign application do not name the same inventor or do not have at least one joint inventor in common, the priority date should be refused until the inconsistency is resolved. See also MPEP § 213.02.

Jump to MPEP Source · 37 CFR 1.63AIA Effective DatesAIA Oath/Declaration Requirements (37 CFR 1.63)AIA Overview and Effective Dates
MPEP GuidanceInformativeAlways
[mpep-216-03a8a4e12abac1387e3894c2]
Consideration of Priority Claims When Intervening Reference Found
Note:
When an intervening reference by the inventive entity is found with a date between foreign filing and U.S. filing, the examiner must consider the applicant's priority claim to determine if it falls within the grace period.

The subject matter of the application is not examined to determine whether the applicant is actually entitled to the priority of the foreign filing date unless such determination is required for patentability reasons. For example, when examining an application under the first inventor to file provisions of the AIA, the examiner considers the merits of an applicant’s claim of priority when a reference by the inventive entity is found with an effective date between the date of the foreign filing and the date of filing in the United States. This would be necessary in order to determine whether the reference's prior art date is within the grace period for the application under examination and when an interference situation is under consideration. If at the time of making an action the examiner has found such an intervening reference, the examiner simply rejects whatever claims may be considered unpatentable thereover, without paying any attention to the priority date (assuming the certified copy of the priority papers has not yet been filed). The applicant in reply may argue the rejection if it is of such a nature that it can be argued, or present the foreign papers for the purpose of overcoming the date of the reference. If the applicant argues the reference, the examiner, in the next action in the application, may specifically require the foreign papers to be filed in addition to repeating the rejection if it is still considered applicable, or the examiner may merely continue the rejection.

Jump to MPEP SourceAIA Effective DatesKey Changes Under AIAAssignee as Applicant Signature
Topic

35 U.S.C. 112 – Disclosure Requirements

3 rules
StatutoryInformativeAlways
[mpep-216-98046a9d2283f607ef57b5fa]
Determine Identity of Invention Between U.S. and Foreign Applications
Note:
The examiner must determine if the invention in the U.S. application matches that in the foreign application to establish priority.

The most important aspect of the examiner’s action pertaining to a right of priority is the determination of the identity of invention between the U.S. and the foreign applications. The foreign application may be considered in the same manner as if it had been filed in this country on the same date that it was filed in the foreign country, and the applicant is ordinarily entitled to any claims based on such foreign application that applicant would be entitled to under U.S. laws and practice. The foreign application must be examined for the question of sufficiency of the disclosure under 35 U.S.C. 112 as well as to determine if there is a basis for the claims sought.

Jump to MPEP SourceDisclosure Requirements
StatutoryPermittedAlways
[mpep-216-5f73ea438964ac0302670b1c]
Foreign Application Treated as Domestic Filing
Note:
A foreign application is treated as if it were filed in the U.S. on the same date, allowing claims based on it under U.S. laws and practice.

The most important aspect of the examiner’s action pertaining to a right of priority is the determination of the identity of invention between the U.S. and the foreign applications. The foreign application may be considered in the same manner as if it had been filed in this country on the same date that it was filed in the foreign country, and the applicant is ordinarily entitled to any claims based on such foreign application that applicant would be entitled to under U.S. laws and practice. The foreign application must be examined for the question of sufficiency of the disclosure under 35 U.S.C. 112 as well as to determine if there is a basis for the claims sought.

Jump to MPEP SourceDisclosure Requirements
StatutoryRequiredAlways
[mpep-216-733029594cd334a9aa667847]
Examination of Foreign Application for Sufficiency and Claims Basis
Note:
The foreign application must be examined to ensure sufficient disclosure under 35 U.S.C. 112 and to verify the basis for the claims sought.

The most important aspect of the examiner’s action pertaining to a right of priority is the determination of the identity of invention between the U.S. and the foreign applications. The foreign application may be considered in the same manner as if it had been filed in this country on the same date that it was filed in the foreign country, and the applicant is ordinarily entitled to any claims based on such foreign application that applicant would be entitled to under U.S. laws and practice. The foreign application must be examined for the question of sufficiency of the disclosure under 35 U.S.C. 112 as well as to determine if there is a basis for the claims sought.

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Topic

Amendments in National Stage

1 rules
StatutoryRecommendedAlways
[mpep-216-89a9c3ae8a435fcf7d675b04]
Timely Priority Claim Required for Original Applications
Note:
Examiners must ensure that the claim for foreign priority is timely for original applications filed under 35 U.S.C. 111(a) and international applications entering the national stage under 35 U.S.C. 371.

When the claim to priority and the certified copy of the foreign application are received while the application is pending before the examiner, the examiner generally makes no examination of the papers except to see that they contain no obvious formal defects and correspond in number, date, and country to the application identified in the application data sheet for an application filed on or after September 16, 2012, or oath or declaration or application data sheet for an application filed prior to September 16, 2012. In addition, for original applications filed under 35 U.S.C. 111(a) (other than design applications) and international applications entering the national stage under 35 U.S.C. 371, the examiner should make sure that the claim for foreign priority is timely. Examiners may use form paragraph 2.21.01 to notify applicant that the foreign priority claim is untimely. See also MPEP § 214.03.

Jump to MPEP SourceAmendments in National StageInterviews in National StagePriority Claim in PCT
Topic

Form Paragraph Usage

1 rules
StatutoryPermittedAlways
[mpep-216-b08f5412c03a839d2b428d1a]
Examiners May Notify Applicant of Untimely Foreign Priority Claim
Note:
Examiners can use form paragraph 2.21.01 to inform applicants if their foreign priority claim is submitted late.

When the claim to priority and the certified copy of the foreign application are received while the application is pending before the examiner, the examiner generally makes no examination of the papers except to see that they contain no obvious formal defects and correspond in number, date, and country to the application identified in the application data sheet for an application filed on or after September 16, 2012, or oath or declaration or application data sheet for an application filed prior to September 16, 2012. In addition, for original applications filed under 35 U.S.C. 111(a) (other than design applications) and international applications entering the national stage under 35 U.S.C. 371, the examiner should make sure that the claim for foreign priority is timely. Examiners may use form paragraph 2.21.01 to notify applicant that the foreign priority claim is untimely. See also MPEP § 214.03.

Jump to MPEP SourceForm Paragraph UsageForm ParagraphsPriority Claim in PCT

Examiner Form Paragraphs

Examiner form paragraphs are standard language that you might see in an Office Action or communication from the USPTO. Examiners have latitude to change the form paragraphs, but you will often see this exact language.

¶ 2.19 ¶ 2.19 Overcome Rejection by Translation

Applicant cannot rely upon the certified copy of the foreign priority application to overcome this rejection because a translation of said application has not been made of record in accordance with 37 CFR 1.55 . When an English language translation of a non-English language foreign application is required, the translation must be that of the certified copy (of the foreign application as filed) submitted together with a statement that the translation of the certified copy is accurate. See MPEP §§ 215 and 216 .

Examiner Note

This paragraph should follow a rejection based on an intervening reference.

Citations

Primary topicCitation
AIA Effective Dates
Amendments in National Stage
Form Paragraph Usage
35 U.S.C. § 111(a)
35 U.S.C. 112 – Disclosure Requirements
Components Required for Filing Date
35 U.S.C. § 112
AIA Effective Dates
Amendments in National Stage
Form Paragraph Usage
35 U.S.C. § 371
AIA Effective Dates
Assignee as Applicant Signature
Ordering Certified Copies
37 CFR § 1.55(n)
AIA Effective Dates
Assignee as Applicant Signature
Ordering Certified Copies
37 CFR § 1.63
AIA Effective Dates
Assignee as Applicant Signature
Ordering Certified Copies
MPEP § 213.02
AIA Effective Dates
Amendments in National Stage
Form Paragraph Usage
MPEP § 214.03
Form Paragraph § 2.19
AIA Effective Dates
Amendments in National Stage
Form Paragraph Usage
Form Paragraph § 2.21.01

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