MPEP § 901.03 — Pending Applications (Annotated Rules)

§901.03 Pending Applications

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

This page consolidates and annotates all enforceable requirements under MPEP § 901.03, 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.

Pending Applications

This section addresses Pending Applications. Primary authority: 35 U.S.C. 122, 35 U.S.C. 122(b), and 37 CFR 1.11(b). Contains: 2 requirements, 1 prohibition, 2 permissions, and 2 other statements.

Key Rules

Topic

Publication Timing (18 Months)

4 rules
StatutoryInformativeAlways
[mpep-901-03-caeed3ccaded6302f811aa51]
Patent Applications Published After 18 Months
Note:
Patent applications filed on or after November 29, 2000, are published promptly after 18 months from the earliest filing date unless exceptions apply.

The American Inventors Protection Act of 1999 (AIPA) was enacted into law on November 29, 1999. The AIPA amended 35 U.S.C. 122 to provide that, with certain exceptions, applications for patent filed on or after November 29, 2000 shall be published promptly after the expiration of a period of eighteen (18) months from the earliest filing date for which a benefit is sought under title 35, United States Code, and that an application may be published earlier at the request of the applicant. See 35 U.S.C. 122(b) and 37 CFR 1.215 and 1.219. In addition, applications filed prior to November 29, 2000, but pending on November 29, 2000, may be published if a request for voluntary publication is filed. See 37 CFR 1.221. Patent applications filed on or after November 29, 2000, and those including a request for voluntary publication shall be published except for the following enumerated exceptions.

Jump to MPEP Source · 37 CFR 1.215Publication Timing (18 Months)Request for Early PublicationPublication of Patent Applications
StatutoryRequiredAlways
[mpep-901-03-fc44e55e0f936ac31db61d98]
Patent Applications Published After 18 Months
Note:
Patent applications filed on or after November 29, 2000, are published promptly after 18 months from the earliest filing date unless exceptions apply.

The American Inventors Protection Act of 1999 (AIPA) was enacted into law on November 29, 1999. The AIPA amended 35 U.S.C. 122 to provide that, with certain exceptions, applications for patent filed on or after November 29, 2000 shall be published promptly after the expiration of a period of eighteen (18) months from the earliest filing date for which a benefit is sought under title 35, United States Code, and that an application may be published earlier at the request of the applicant. See 35 U.S.C. 122(b) and 37 CFR 1.215 and 1.219. In addition, applications filed prior to November 29, 2000, but pending on November 29, 2000, may be published if a request for voluntary publication is filed. See 37 CFR 1.221. Patent applications filed on or after November 29, 2000, and those including a request for voluntary publication shall be published except for the following enumerated exceptions.

Jump to MPEP Source · 37 CFR 1.215Publication Timing (18 Months)Request for Early PublicationPublication of Patent Applications
StatutoryPermittedAlways
[mpep-901-03-6a40929e5c069cac8f957ef2]
Pending Applications May Be Published On Request
Note:
Patent applications pending on November 29, 2000, can be published if a voluntary publication request is filed.

The American Inventors Protection Act of 1999 (AIPA) was enacted into law on November 29, 1999. The AIPA amended 35 U.S.C. 122 to provide that, with certain exceptions, applications for patent filed on or after November 29, 2000 shall be published promptly after the expiration of a period of eighteen (18) months from the earliest filing date for which a benefit is sought under title 35, United States Code, and that an application may be published earlier at the request of the applicant. See 35 U.S.C. 122(b) and 37 CFR 1.215 and 1.219. In addition, applications filed prior to November 29, 2000, but pending on November 29, 2000, may be published if a request for voluntary publication is filed. See 37 CFR 1.221. Patent applications filed on or after November 29, 2000, and those including a request for voluntary publication shall be published except for the following enumerated exceptions.

Jump to MPEP Source · 37 CFR 1.215Publication Timing (18 Months)Request for Early PublicationPublication of Patent Applications
StatutoryRequiredAlways
[mpep-901-03-ccc6ab6b7e508d9288178e02]
Exceptions to Patent Publication After November 29, 2000
Note:
Patent applications filed on or after November 29, 2000, and those requesting voluntary publication, must be published unless specific exceptions apply.

The American Inventors Protection Act of 1999 (AIPA) was enacted into law on November 29, 1999. The AIPA amended 35 U.S.C. 122 to provide that, with certain exceptions, applications for patent filed on or after November 29, 2000 shall be published promptly after the expiration of a period of eighteen (18) months from the earliest filing date for which a benefit is sought under title 35, United States Code, and that an application may be published earlier at the request of the applicant. See 35 U.S.C. 122(b) and 37 CFR 1.215 and 1.219. In addition, applications filed prior to November 29, 2000, but pending on November 29, 2000, may be published if a request for voluntary publication is filed. See 37 CFR 1.221. Patent applications filed on or after November 29, 2000, and those including a request for voluntary publication shall be published except for the following enumerated exceptions.

Jump to MPEP Source · 37 CFR 1.215Publication Timing (18 Months)Request for Early PublicationPublication of Patent Applications
Topic

Access to National Stage Applications

2 rules
StatutoryInformativeAlways
[mpep-901-03-e106a80ac8a0c134511f3390]
National Stage Application Publications as Prior Art
Note:
A U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered prior art only if the international application was filed on or after November 29, 2000, designated the United States, and published in English.

U.S. patent application publications are prior art under pre-AIA 35 U.S.C. 102(a) and 102(b) and 35 U.S.C. 102(a)(1) as of the publication date. Under pre-AIA 35 U.S.C. 102(e)(1) and 35 U.S.C. 102(a)(2), a U.S. patent application publication under 35 U.S.C. 122(b) is considered to be prior art as of the earliest effective U.S. filing date of the published application. Additionally, a U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered to be prior art under pre-AIA 35 U.S.C. 102(e) as of the international filing date, or an earlier effective U.S. filing date, only if the international application was filed on or after November 29, 2000, designated the United States, and was published under PCT Article 21(2) in English. Similarly, a U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered to be prior art under 35 U.S.C. 102(a)(2) as of the international filing date, or an earlier effective U.S. filing date.

Jump to MPEP SourceAccess to National Stage ApplicationsAccess to Published PCT ApplicationsAccess to Published Application File
StatutoryInformativeAlways
[mpep-901-03-5263b0aab32eec6decdf65e5]
National Stage Application Publications Are Prior Art
Note:
A U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered prior art as of the international filing date or an earlier effective U.S. filing date.

U.S. patent application publications are prior art under pre-AIA 35 U.S.C. 102(a) and 102(b) and 35 U.S.C. 102(a)(1) as of the publication date. Under pre-AIA 35 U.S.C. 102(e)(1) and 35 U.S.C. 102(a)(2), a U.S. patent application publication under 35 U.S.C. 122(b) is considered to be prior art as of the earliest effective U.S. filing date of the published application. Additionally, a U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered to be prior art under pre-AIA 35 U.S.C. 102(e) as of the international filing date, or an earlier effective U.S. filing date, only if the international application was filed on or after November 29, 2000, designated the United States, and was published under PCT Article 21(2) in English. Similarly, a U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered to be prior art under 35 U.S.C. 102(a)(2) as of the international filing date, or an earlier effective U.S. filing date.

Jump to MPEP SourceAccess to National Stage ApplicationsAccess to Published PCT ApplicationsAccess to Published Application File
Topic

Restrictions on Access to Application Files

1 rules
StatutoryPermittedAlways
[mpep-901-03-890b5a73b33688520ab1a34c]
Claims May Be Rejected Based on Copending Application
Note:
Pending U.S. applications, except for specific cases, are kept confidential and cannot be used as references. However, claims in one application may be rejected based on the claimed subject matter from a copending application by the same inventive entity.

Except as provided in 37 CFR 1.11(b), 37 CFR 1.14(a)(1)(v) and 37 CFR 1.14(a)(1)(vi), pending U.S. applications which have not been published are generally preserved in confidence (37 CFR 1.14(a)) and are not available as references. However, claims in one nonprovisional application may be rejected on the claimed subject matter of a copending nonprovisional application of the same inventive entity. See MPEP § 804. For applications having a common assignee or applicant and different inventive entities claiming a single inventive concept, see MPEP § 804.03. See also MPEP § 2127, subsection IV.

Jump to MPEP Source · 37 CFR 1.11(b)Restrictions on Access to Application FilesAccess to Patent Application Files (MPEP 101-106)Control of Inspection by Assignee (MPEP 106)
Topic

Control of Inspection by Assignee (MPEP 106)

1 rules
StatutoryInformativeAlways
[mpep-901-03-b3021dcca7fc68d86d8e13ec]
Claims May Reject Copending Nonprovisional Application
Note:
Pending applications with a common assignee and different inventive entities claiming a single inventive concept may have claims rejected based on the subject matter of a copending nonprovisional application.

Except as provided in 37 CFR 1.11(b), 37 CFR 1.14(a)(1)(v) and 37 CFR 1.14(a)(1)(vi), pending U.S. applications which have not been published are generally preserved in confidence (37 CFR 1.14(a)) and are not available as references. However, claims in one nonprovisional application may be rejected on the claimed subject matter of a copending nonprovisional application of the same inventive entity. See MPEP § 804. For applications having a common assignee or applicant and different inventive entities claiming a single inventive concept, see MPEP § 804.03. See also MPEP § 2127, subsection IV.

Jump to MPEP Source · 37 CFR 1.11(b)Control of Inspection by Assignee (MPEP 106)Restrictions on Access to Application FilesAccess to Patent Application Files (MPEP 101-106)
Topic

International Design Application Requirements

1 rules
StatutoryProhibitedAlways
[mpep-901-03-e43ca49741bc140fa65735cb]
Prohibitions on Published Applications
Note:
An application cannot be published if it is no longer pending, subject to a secrecy order, a provisional application, an international design application, or a reissue application.
First, an application shall not be published if it is:
  • (A) no longer pending;
  • (B) subject to a secrecy order under 35 U.S.C. 181, that is, publication or disclosure of the application would be detrimental to national security;
  • (C) a provisional application filed under 35 U.S.C. 111(b);
  • (D) an application for a design patent filed under 35 U.S.C. 171;
  • (E) an application for an International design application filed under 35 U.S.C. 382; or
  • (F) a reissue application filed under 35 U.S.C. 251.
Jump to MPEP SourceInternational Design Application RequirementsDesign Application RequirementsInternational Design Examination
Topic

Reissue Application Filing

1 rules
StatutoryInformativeAlways
[mpep-901-03-f781db83289fdfa7258d2547]
Reissue Application Not Published
Note:
An application filed under 35 U.S.C. 251 for reissuance will not be published.

First, an application shall not be published if it is:

(F) a reissue application filed under 35 U.S.C. 251.

Jump to MPEP SourceReissue Application FilingGrounds for ReissueReissue Patent Practice
Topic

AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)

1 rules
StatutoryInformativeAlways
[mpep-901-03-c02933cf44b99dd063fdb806]
U.S. Patent Application Publications Are Prior Art
Note:
Under pre-AIA 35 U.S.C. 102, U.S. patent application publications are considered prior art as of their publication date.

U.S. patent application publications are prior art under pre-AIA 35 U.S.C. 102(a) and 102(b) and 35 U.S.C. 102(a)(1) as of the publication date. Under pre-AIA 35 U.S.C. 102(e)(1) and 35 U.S.C. 102(a)(2), a U.S. patent application publication under 35 U.S.C. 122(b) is considered to be prior art as of the earliest effective U.S. filing date of the published application. Additionally, a U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered to be prior art under pre-AIA 35 U.S.C. 102(e) as of the international filing date, or an earlier effective U.S. filing date, only if the international application was filed on or after November 29, 2000, designated the United States, and was published under PCT Article 21(2) in English. Similarly, a U.S. patent application publication of a National Stage application and a WIPO publication of an international application under PCT Article 21(2) are considered to be prior art under 35 U.S.C. 102(a)(2) as of the international filing date, or an earlier effective U.S. filing date.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Rejections in National Stage

Citations

Primary topicCitation
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Access to National Stage Applications
35 U.S.C. § 102(a)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Access to National Stage Applications
35 U.S.C. § 102(a)(1)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Access to National Stage Applications
35 U.S.C. § 102(a)(2)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Access to National Stage Applications
35 U.S.C. § 102(e)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Access to National Stage Applications
35 U.S.C. § 102(e)(1)
International Design Application Requirements35 U.S.C. § 111(b)
Publication Timing (18 Months)35 U.S.C. § 122
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Access to National Stage Applications
Publication Timing (18 Months)
35 U.S.C. § 122(b)
International Design Application Requirements35 U.S.C. § 171
International Design Application Requirements35 U.S.C. § 181
International Design Application Requirements
Reissue Application Filing
35 U.S.C. § 251
International Design Application Requirements35 U.S.C. § 382
Control of Inspection by Assignee (MPEP 106)
Restrictions on Access to Application Files
37 CFR § 1.11(b)
Control of Inspection by Assignee (MPEP 106)
Restrictions on Access to Application Files
37 CFR § 1.14(a)
Control of Inspection by Assignee (MPEP 106)
Restrictions on Access to Application Files
37 CFR § 1.14(a)(1)(v)
Control of Inspection by Assignee (MPEP 106)
Restrictions on Access to Application Files
37 CFR § 1.14(a)(1)(vi)
Publication Timing (18 Months)37 CFR § 1.215
Publication Timing (18 Months)37 CFR § 1.221
MPEP § 1122
Control of Inspection by Assignee (MPEP 106)
Restrictions on Access to Application Files
MPEP § 2127
Control of Inspection by Assignee (MPEP 106)
Restrictions on Access to Application Files
MPEP § 804
Control of Inspection by Assignee (MPEP 106)
Restrictions on Access to Application Files
MPEP § 804.03
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Access to National Stage Applications
PCT Article 21(2)

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