MPEP § 901.02 — Abandoned Applications (Annotated Rules)

§901.02 Abandoned Applications

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

This page consolidates and annotates all enforceable requirements under MPEP § 901.02, 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.

Abandoned Applications

This section addresses Abandoned Applications. Primary authority: 35 U.S.C. 122(b), 35 U.S.C. 102(a), and 35 U.S.C. 102(a)(1). Contains: 4 permissions.

Key Rules

Topic

Access to Abandoned Applications

2 rules
StatutoryPermittedAlways
[mpep-901-02-8a58469a0cb620a8d939806a]
Abandoned Application Publication as Prior Art
Note:
An abandoned application publication under 35 U.S.C. 122(b) is considered a printed publication and can be used as prior art under pre-AIA 35 U.S.C. 102(a), (b), and (a)(1).

If an abandoned application was previously published under 35 U.S.C. 122(b), that patent application publication is available as prior art under pre-AIA 35 U.S.C. 102(a) and 102(b) and 35 U.S.C. 102(a)(1) as of its patent application publication date because the patent application publication is considered to be a “printed” publication within the meaning of pre-AIA 35 U.S.C. 102(a) and 102(b) and 35 U.S.C. 102(a)(1), even though the patent application publication is disseminated by the U.S. Patent and Trademark Office (Office) using only electronic media. See MPEP § 2128. Additionally, as described in MPEP § 901.03, a patent application publication published under 35 U.S.C. 122(b) of an application that has become abandoned may be available as prior art under pre-AIA 35 U.S.C. 102(e) as of the earliest effective U.S. filing date of the published application and may be available under 35 U.S.C. 102(a)(2) as of the date it was effectively filed. As provided in 37 CFR 1.11(a), unless a redacted copy of the application was used for the patent application publication, the specification, drawings, and all papers relating to the file of an abandoned published application are open to inspection by the public, and copies may be obtained from the Office. The information that is available to the public under 37 CFR 1.11(a) may be used as prior art under pre-AIA 35 U.S.C. 102(a) or 102(b) or 35 U.S.C. 102(a)(1) as of the date the information became publicly available.

Jump to MPEP Source · 37 CFR 1.11(a)Access to Abandoned ApplicationsCopies of Patents and ApplicationsAccess to Published Application File
StatutoryPermittedAlways
[mpep-901-02-430eec07f9ec985fc629c251]
File Contents of Abandoned Applications May Be Publicly Available
Note:
The file contents of an unpublished abandoned application may be made available to the public if it is identified or its benefit is claimed in a U.S. patent.

Where an unpublished abandoned application is identified or whose benefit is claimed in a U.S. patent, a statutory invention registration, a U.S. patent application publication, or an international patent application publication of an international application that was published in accordance with PCT Article 21(2), the file contents of the unpublished abandoned application may be made available to the public. See 37 CFR 1.14(a)(1)(iv). Subject matter from abandoned applications which is available to the public under 37 CFR 1.14 may be used as prior art against a pending U.S. application under pre-AIA 35 U.S.C. 102(a) or 102(b) or 35 U.S.C. 102(a)(1) as of the date the subject matter became publicly available.

Jump to MPEP Source · 37 CFR 1.14(a)(1)(iv)Access to Abandoned ApplicationsAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)
Topic

Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)

1 rules
StatutoryPermittedAlways
[mpep-901-02-759ab72874d6db234a967e89]
Publicly Available Information as Prior Art
Note:
The specification, drawings, and related papers of an abandoned patent application publication can be used as prior art under pre-AIA 35 U.S.C. 102(a), (b), or (a)(1) on the date they became publicly available.

If an abandoned application was previously published under 35 U.S.C. 122(b), that patent application publication is available as prior art under pre-AIA 35 U.S.C. 102(a) and 102(b) and 35 U.S.C. 102(a)(1) as of its patent application publication date because the patent application publication is considered to be a “printed” publication within the meaning of pre-AIA 35 U.S.C. 102(a) and 102(b) and 35 U.S.C. 102(a)(1), even though the patent application publication is disseminated by the U.S. Patent and Trademark Office (Office) using only electronic media. See MPEP § 2128. Additionally, as described in MPEP § 901.03, a patent application publication published under 35 U.S.C. 122(b) of an application that has become abandoned may be available as prior art under pre-AIA 35 U.S.C. 102(e) as of the earliest effective U.S. filing date of the published application and may be available under 35 U.S.C. 102(a)(2) as of the date it was effectively filed. As provided in 37 CFR 1.11(a), unless a redacted copy of the application was used for the patent application publication, the specification, drawings, and all papers relating to the file of an abandoned published application are open to inspection by the public, and copies may be obtained from the Office. The information that is available to the public under 37 CFR 1.11(a) may be used as prior art under pre-AIA 35 U.S.C. 102(a) or 102(b) or 35 U.S.C. 102(a)(1) as of the date the information became publicly available.

Jump to MPEP Source · 37 CFR 1.11(a)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)Printed Publication as Prior Art (MPEP 2128)
Topic

Effect of International Publication

1 rules
StatutoryPermittedAlways
[mpep-901-02-6e3394adf97fe13a88c3d053]
Subject Matter from Abandoned Applications Can Be Used as Prior Art
Note:
Subject matter from abandoned applications, once publicly available under 37 CFR 1.14, can be used as prior art against a pending U.S. application.

Where an unpublished abandoned application is identified or whose benefit is claimed in a U.S. patent, a statutory invention registration, a U.S. patent application publication, or an international patent application publication of an international application that was published in accordance with PCT Article 21(2), the file contents of the unpublished abandoned application may be made available to the public. See 37 CFR 1.14(a)(1)(iv). Subject matter from abandoned applications which is available to the public under 37 CFR 1.14 may be used as prior art against a pending U.S. application under pre-AIA 35 U.S.C. 102(a) or 102(b) or 35 U.S.C. 102(a)(1) as of the date the subject matter became publicly available.

Jump to MPEP Source · 37 CFR 1.14(a)(1)(iv)Effect of International PublicationPrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)

Citations

Primary topicCitation
Access to Abandoned Applications
Effect of International Publication
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(a)
Access to Abandoned Applications
Effect of International Publication
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(a)(1)
Access to Abandoned Applications
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(a)(2)
Access to Abandoned Applications
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(e)
Access to Abandoned Applications
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 122(b)
Access to Abandoned Applications
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
37 CFR § 1.11(a)
Access to Abandoned Applications
Effect of International Publication
37 CFR § 1.14
Access to Abandoned Applications
Effect of International Publication
37 CFR § 1.14(a)(1)(iv)
MPEP § 2127
Access to Abandoned Applications
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
MPEP § 2128
Access to Abandoned Applications
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
MPEP § 901.03
MPEP § 901.06(d)
In re Heritage, 182 F.2d 639, 86 USPQ 160 (CCPA 1950)
In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967)
In re Switzer, 166 F.2d 827, 77 USPQ 156 (CCPA 1948)
Access to Abandoned Applications
Effect of International Publication
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