MPEP § 2157 — Improper Naming of Inventors (Annotated Rules)

§2157 Improper Naming of Inventors

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

This page consolidates and annotates all enforceable requirements under MPEP § 2157, 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.

Improper Naming of Inventors

This section addresses Improper Naming of Inventors. Primary authority: 35 U.S.C. 102(f), 35 U.S.C. 115(a), and 35 U.S.C. 135. Contains: 3 requirements, 1 guidance statement, and 4 other statements.

Key Rules

Topic

AIA vs Pre-AIA Practice

4 rules
StatutoryInformativeAlways
[mpep-2157-1284d2587744d7bceffee5a4]
Requirement for Correct Inventorship
Note:
Use Form Paragraph 7.04.02.aia to reject claims that fail to set forth the correct inventorship as required by 35 U.S.C. 101 and 115.

Use Form Paragraph 7.04.02.aia to reject claims under 35 U.S.C. 101 and 115 for failing to set forth the correct inventorship.

Jump to MPEP SourceAIA vs Pre-AIA PracticePatent Eligibility
MPEP GuidanceInformativeAlways
[mpep-2157-11241b22a48de3426c306a5b]
Use Form Paragraph for Improper Inventorship Rejection
Note:
When form paragraph 7.04.01 is used for a rejection not based on improper inventorship, switch to using form paragraph 7.04.102.aia with 7.04.01 for an improper inventorship rejection.

1. If form paragraph 7.04.01 is already being used for a rejection that is not based on improper inventorship, then in lieu of this form paragraph, use form paragraph 7.04.102.aia with form paragraph 7.04.01 for a rejection based on improper inventorship.

MPEP § 2157AIA vs Pre-AIA Practice
MPEP GuidanceRequiredAlways
[mpep-2157-43c5399ce46093e37939dbad]
Form Paragraph Must Follow Another
Note:
This form paragraph must be followed by form paragraph 7.04.02.aia to ensure proper sequence in the document.

3. This form paragraph must be followed by form paragraph 7.04.02.aia.

MPEP § 2157AIA vs Pre-AIA Practice
MPEP GuidanceRequiredAlways
[mpep-2157-dd337f7c79515dc4c7c43709]
Rejection Must Be Preceded by Specific Paragraphs
Note:
This rule requires that any rejection be preceded by either form paragraph 7.04.101.aia or 7.04.102.aia.

2. This rejection must be preceded by either form paragraph 7.04.101.aia or 7.04.102.aia.

MPEP § 2157AIA vs Pre-AIA Practice
Topic

35 U.S.C. 101 – Patent Eligibility

2 rules
StatutoryRecommendedAlways
[mpep-2157-ed20dc58e0c76fcb566b0f56]
Requirement for Correcting Incorrect Inventorship
Note:
Applicants must submit a request to correct inventorship under 37 CFR 1.48 if the application names an incorrect inventor. Office personnel should reject claims if no such request is filed and it's clear that the correct inventorship was not named.

Where an application names an incorrect inventorship, the applicant should submit a request to correct inventorship under 37 CFR 1.48. See MPEP § 602.01(c) et seq. In the rare situation where it is clear that the application does not name the correct inventorship and the applicant has not filed a request to correct inventorship under 37 CFR 1.48, Office personnel should reject the claims under 35 U.S.C. 101 and 35 U.S.C. 115.

Jump to MPEP Source · 37 CFR 1.48Patent Eligibility
StatutoryInformativeAlways
[mpep-2157-1e34755976965db46ca3f1f8]
Requirement for Rejection Based on 35 U.S.C. 101
Note:
This rule requires the use of this form paragraph when rejecting an application under 35 U.S.C. 101, provided that a rejection under another basis has already been made and its statutory text is present.

1. This form paragraph is to be used ONLY when a rejection under 35 U.S.C. 101 on another basis has been made and the statutory text thereof is already present.

35 U.S.C.Patent Eligibility
Topic

Oath/Declaration in National Stage

1 rules
StatutoryRequiredAlways
[mpep-2157-e8bc2fa721016e2eeaff873b]
Requirement for Inventor Identification in Patent Application
Note:
An application must include the name of the inventor for any claimed invention. The Office assumes the named inventor is the actual inventor unless proven otherwise.

Although the AIA eliminated pre-AIA 35 U.S.C. 102(f), the patent laws still require the naming of the inventor of the claimed subject matter. See 35 U.S.C. 115(a) (“[a]n application for patent that is filed under [35 U.S.C.] 111(a) or commences the national stage under [35 U.S.C.] 371 shall include, or be amended to include, the name of the inventor for any invention claimed in the application”). The Office generally presumes that the named inventor in the application is the actual inventor to be named on the patent. See MPEP § 2109. However, see the examples in MPEP §§ 2155.01 and 2155.02 regarding the need to establish inventorship on the record in connection with an affidavit or declaration under 37 CFR 1.130. A situation in which an application names a person who is not the actual inventor or a joint inventor as the inventor or a joint inventor will be handled in a derivation proceeding under 35 U.S.C. 135 (see MPEP §§ 2310 – 2315), by a correction of inventorship under 37 CFR 1.48, or through a rejection under 35 U.S.C. 101 and 35 U.S.C. 115, as appropriate.

Jump to MPEP Source · 37 CFR 1.130Oath/Declaration in National StageAmendments in National StageRejections in National Stage
Topic

Antedating Reference – Pre-AIA (MPEP 2136.05)

1 rules
StatutoryInformativeAlways
[mpep-2157-9599ea1335b618a877ca71f9]
Named Inventors Generally Presumed to be Actual Inventors
Note:
The Office generally assumes that the named inventor in the application is the actual inventor, but this can be challenged with an affidavit or declaration under 37 CFR 1.130.

Although the AIA eliminated pre-AIA 35 U.S.C. 102(f), the patent laws still require the naming of the inventor of the claimed subject matter. See 35 U.S.C. 115(a) (“[a]n application for patent that is filed under [35 U.S.C.] 111(a) or commences the national stage under [35 U.S.C.] 371 shall include, or be amended to include, the name of the inventor for any invention claimed in the application”). The Office generally presumes that the named inventor in the application is the actual inventor to be named on the patent. See MPEP § 2109. However, see the examples in MPEP §§ 2155.01 and 2155.02 regarding the need to establish inventorship on the record in connection with an affidavit or declaration under 37 CFR 1.130. A situation in which an application names a person who is not the actual inventor or a joint inventor as the inventor or a joint inventor will be handled in a derivation proceeding under 35 U.S.C. 135 (see MPEP §§ 2310 – 2315), by a correction of inventorship under 37 CFR 1.48, or through a rejection under 35 U.S.C. 101 and 35 U.S.C. 115, as appropriate.

Jump to MPEP Source · 37 CFR 1.130Antedating Reference – Pre-AIA (MPEP 2136.05)Oath/Declaration in National StagePre-AIA 102(f) – Derivation (MPEP 2137)
Topic

Pre-AIA 102(f) – Derivation (MPEP 2137)

1 rules
StatutoryInformativeAlways
[mpep-2157-6d5ecbeebfae141ad13ace76]
Requirement for Correct Inventorship
Note:
The rule requires that the named inventor in a patent application must be the actual inventor. If incorrect, it will be handled through derivation proceedings, corrections of inventorship, or rejections.

Although the AIA eliminated pre-AIA 35 U.S.C. 102(f), the patent laws still require the naming of the inventor of the claimed subject matter. See 35 U.S.C. 115(a) (“[a]n application for patent that is filed under [35 U.S.C.] 111(a) or commences the national stage under [35 U.S.C.] 371 shall include, or be amended to include, the name of the inventor for any invention claimed in the application”). The Office generally presumes that the named inventor in the application is the actual inventor to be named on the patent. See MPEP § 2109. However, see the examples in MPEP §§ 2155.01 and 2155.02 regarding the need to establish inventorship on the record in connection with an affidavit or declaration under 37 CFR 1.130. A situation in which an application names a person who is not the actual inventor or a joint inventor as the inventor or a joint inventor will be handled in a derivation proceeding under 35 U.S.C. 135 (see MPEP §§ 2310 – 2315), by a correction of inventorship under 37 CFR 1.48, or through a rejection under 35 U.S.C. 101 and 35 U.S.C. 115, as appropriate.

Jump to MPEP Source · 37 CFR 1.130Pre-AIA 102(f) – Derivation (MPEP 2137)Oath/Declaration in National Stage
Topic

First Inventor to File (FITF) System

1 rules
StatutoryRecommendedAlways
[mpep-2157-6ed7e718ff2264c4746d71c4]
FITF Provisions Must Be Checked Before Rejecting Under Pre-AIA 102(f)
Note:
Examiners must check if an application is subject to the first inventor to file (FITF) provisions of the AIA before rejecting claims under pre-AIA 35 U.S.C. 102(f).

Note that a rejection under pre-AIA 35 U.S.C. 102(f) should not be made if the application is subject to examination under the first inventor to file (FITF) provisions of the AIA. See MPEP § 2159 et seq. to determine whether an application is subject to examination under the FITF provisions, and MPEP § 2137 for information pertaining to pre-AIA 35 U.S.C. 102(f).

Jump to MPEP SourceFirst Inventor to File (FITF) SystemPrior 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
35 U.S.C. 101 – Patent Eligibility
AIA vs Pre-AIA Practice
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
35 U.S.C. § 101
Antedating Reference – Pre-AIA (MPEP 2136.05)
First Inventor to File (FITF) System
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
35 U.S.C. § 102(f)
35 U.S.C. 101 – Patent Eligibility
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
35 U.S.C. § 115
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
35 U.S.C. § 115(a)
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
35 U.S.C. § 135
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
37 CFR § 1.130
35 U.S.C. 101 – Patent Eligibility
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
37 CFR § 1.48
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
MPEP § 2109
First Inventor to File (FITF) SystemMPEP § 2137
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
MPEP § 2155.01
First Inventor to File (FITF) SystemMPEP § 2159
Antedating Reference – Pre-AIA (MPEP 2136.05)
Oath/Declaration in National Stage
Pre-AIA 102(f) – Derivation (MPEP 2137)
MPEP § 2310
35 U.S.C. 101 – Patent EligibilityMPEP § 602.01(c)
AIA vs Pre-AIA PracticeForm Paragraph § 7.04.01
AIA vs Pre-AIA PracticeForm Paragraph § 7.04.02
AIA vs Pre-AIA PracticeForm Paragraph § 7.04.101
AIA vs Pre-AIA PracticeForm Paragraph § 7.04.102

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