MPEP § 2154.01(c) — Requirement Of “Names Another Inventor” (Annotated Rules)

§2154.01(c) Requirement Of “Names Another Inventor”

USPTO MPEP version: BlueIron's Update: 2026-01-10

This page consolidates and annotates all enforceable requirements under MPEP § 2154.01(c), 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.

Requirement Of “Names Another Inventor”

This section addresses Requirement Of “Names Another Inventor”. Primary authority: 35 U.S.C. 100, 35 U.S.C. 102, and 35 U.S.C. 102(a)(2). Contains: 1 requirement and 2 other statements.

Key Rules

Topic

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

2 rules
StatutoryRequiredAlways
[mpep-2154-01-c-5b8d960213ba8a66edf9c4fe]
Requirement for Different Inventive Entity
Note:
A U.S. patent document qualifies as prior art under AIA 35 U.S.C. 102(a)(2) if it names another inventor, even with one or more joint inventors in common.

To qualify as prior art under AIA 35 U.S.C. 102(a)(2), the prior art U.S. patent, U.S. patent application publication, or WIPO published application (“U.S. patent document”) must “name[] another inventor.” This means that if there is any difference in inventive entity between the prior art U.S. patent document and the application under examination or patent under reexamination, the U.S. patent document satisfies the “names another inventor” requirement of AIA 35 U.S.C. 102(a)(2). Thus, in the case of joint inventors, only one joint inventor needs to be different for the inventive entities to be different. Even if there are one or more joint inventors in common in a U.S. patent document and the later-filed application under examination or patent under reexamination, the U.S. patent document qualifies as prior art under AIA 35 U.S.C. 102(a)(2) unless an exception in AIA 35 U.S.C. 102(b)(2) is applicable.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)By Another Inventor RequirementPublished Application as Prior Art
StatutoryInformativeAlways
[mpep-2154-01-c-7704b6897bc994ac03795fc0]
Common Inventors Do Not Exclude Prior Art
Note:
A U.S. patent document qualifies as prior art even if it shares one or more joint inventors with a later-filed application, unless an exception applies.

To qualify as prior art under AIA 35 U.S.C. 102(a)(2), the prior art U.S. patent, U.S. patent application publication, or WIPO published application (“U.S. patent document”) must “name[] another inventor.” This means that if there is any difference in inventive entity between the prior art U.S. patent document and the application under examination or patent under reexamination, the U.S. patent document satisfies the “names another inventor” requirement of AIA 35 U.S.C. 102(a)(2). Thus, in the case of joint inventors, only one joint inventor needs to be different for the inventive entities to be different. Even if there are one or more joint inventors in common in a U.S. patent document and the later-filed application under examination or patent under reexamination, the U.S. patent document qualifies as prior art under AIA 35 U.S.C. 102(a)(2) unless an exception in AIA 35 U.S.C. 102(b)(2) is applicable.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)AIA vs Pre-AIA Practice
Topic

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

1 rules
StatutoryInformativeAlways
[mpep-2154-01-c-6642e266e88f457c0adf40a5]
Requirement for Naming Additional Inventors
Note:
The rule requires applicants to identify any additional inventors when filing under the first inventor to file provisions of the AIA.

[Editor Note: This MPEP section is only applicable to applications subject to examination under the first inventor to file (FITF) provisions of the AIA as set forth in 35 U.S.C. 100 (note). See MPEP § 2159 et seq. to determine whether an application is subject to examination under the FITF provisions, and MPEP § 2131MPEP § 2138 for examination of applications subject to pre-AIA 35 U.S.C. 102.]

Jump to MPEP SourcePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Statutory Authority for ExaminationAIA vs Pre-AIA Practice

Citations

Primary topicCitation
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)35 U.S.C. § 100
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)35 U.S.C. § 102
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)35 U.S.C. § 102(a)(2)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)35 U.S.C. § 102(b)(2)
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)MPEP § 2131
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)MPEP § 2138
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)MPEP § 2159

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: 2026-01-10