MPEP § 716.10 — Attribution Affidavit or Declaration to Overcome Rejection Under Pre-AIA 35 U.S.C. 102 or 103 (Annotated Rules)

§716.10 Attribution Affidavit or Declaration to Overcome Rejection Under Pre-AIA 35 U.S.C. 102 or 103

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

This page consolidates and annotates all enforceable requirements under MPEP § 716.10, 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.

Attribution Affidavit or Declaration to Overcome Rejection Under Pre-AIA 35 U.S.C. 102 or 103

This section addresses Attribution Affidavit or Declaration to Overcome Rejection Under Pre-AIA 35 U.S.C. 102 or 103. Primary authority: 35 U.S.C. 102, 35 U.S.C. 102(a), and 35 U.S.C. 102(f). Contains: 2 requirements, 1 prohibition, 4 permissions, and 6 other statements.

Key Rules

Topic

Antedating Reference – Pre-AIA (MPEP 2136.05)

7 rules
StatutoryPermittedAlways
[mpep-716-10-6ccbff7f3632e7577d195049]
Affidavit to Overcome Pre-AIA Prior Art Rejection
Note:
Allows submission of an affidavit to attribute inventorship and overcome a rejection based on pre-AIA prior art.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)Antedating Reference – Pre-AIA (MPEP 2136.05)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)
StatutoryInformativeAlways
[mpep-716-10-6c8ca7bb2e76b17f9762498e]
Joint Patent as Prior Art Until Overcome
Note:
A joint patent or application publication naming an inventor and a joint inventor is considered prior art until proven otherwise by an affidavit showing the inventor's prior conception.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)Antedating Reference – Pre-AIA (MPEP 2136.05)Pre-AIA 102(g) – Prior Invention (MPEP 2138)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryInformativeAlways
[mpep-716-10-8229b7dbaf8fd3a95c7ba265]
Declaration Under 37 CFR 1.132 Can Overcome Prior Art Rejection
Note:
An inventor's declaration under 37 CFR 1.132 that they conceived or invented disclosed but unclaimed subject matter can overcome a prior art rejection.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)Antedating Reference – Pre-AIA (MPEP 2136.05)Conception and Reduction to PracticeAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
StatutoryInformativeAlways
[mpep-716-10-248011e963cd5d3d9b38a91c]
Requirement for Antedating Reference Under Pre-AIA 35 U.S.C. 102
Note:
The rule requires the submission of an attribution affidavit or declaration to overcome a rejection under pre-AIA 35 U.S.C. 102.

For applications subject to current 35 U.S.C. 102, see MPEP §§ 717, 2153 and 2154.

Jump to MPEP SourceAntedating Reference – Pre-AIA (MPEP 2136.05)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-716-10-6b6cb9f59f2109126aa55bdd]
Attestation Requirement for Pre-AIA and Current U.S.C. 102 Rejections
Note:
The Office treats affidavits or declarations of attribution as either 37 CFR 1.130 or 1.132, depending on the applicable U.S.C. section, regardless of their designation.

Affidavits or declarations of attribution for applications subject to pre-AIA 35 U.S.C. 102 are affidavits or declarations under 37 CFR 1.132 because these are not otherwise provided for in the rules of practice. The Office will treat affidavits or declarations of attribution for applications subject to the current 35 U.S.C. 102 as affidavits or declarations under 37 CFR 1.130, and affidavits or declarations of attribution for applications subject to pre-AIA 35 U.S.C. 102 as affidavits or declarations under 37 CFR 1.132, regardless of whether the affidavit or declaration is designated as an affidavit or declaration under 37 CFR 1.130, 1.131, or 37 CFR 1.132.

Jump to MPEP Source · 37 CFR 1.132Antedating Reference – Pre-AIA (MPEP 2136.05)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-716-10-24611e8c07017387765fe699]
Reference With Different Inventive Entity Is Prior Art
Note:
A reference authored by a different entity than the application is considered prior art under pre-AIA 35 U.S.C. 102 or 103.

Same facts as above, but the authorship or inventive entity of the reference is different from the inventive entity of the application. Because the inventive entities are different, the reference is prior art under pre-AIA 35 U.S.C. 102(a) or (e).

Jump to MPEP SourceAntedating Reference – Pre-AIA (MPEP 2136.05)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA Practice
StatutoryPermittedAlways
[mpep-716-10-f7784506b276de4d2ac4dd1b]
Affidavit to Convert Reference Origin
Note:
An affidavit under 37 CFR 1.132 can be submitted to show that relevant portions of a reference originated with or were obtained from the inventor, converting the fact situation from Example 2 to Example 1.

In the situation described in Example 2, an affidavit under 37 CFR 1.132 may be submitted to show that the relevant portions of the reference originated with or were obtained from the inventor or at least one joint inventor named in the application undergoing examination. Thus the affidavit attempts to convert the fact situation from that described in Example 2 to the situation described in Example 1.

Jump to MPEP Source · 37 CFR 1.132Antedating Reference – Pre-AIA (MPEP 2136.05)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA Practice
Topic

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

6 rules
StatutoryRequiredAlways
[mpep-716-10-0eaf38e1dcbad746c1be5bb9]
Declaration Required for Joint Inventors in Reference
Note:
When a U.S. patent or application publication includes a claim relied upon in a rejection and that subject matter is claimed by an inventor alone, a declaration under 37 CFR 1.132 must explain the presence of additional joint inventors.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)
StatutoryProhibitedAlways
[mpep-716-10-5ee08b04881b65cc3e17a168]
Affidavits Cannot Overcome Rejection Based on Different Inventive Entity
Note:
An affidavit under 37 CFR 1.131(a) cannot be used to overcome a rejection based on a U.S. patent or publication naming a different inventive entity.

Note that an affidavit or declaration under 37 CFR 1.131(a) cannot be used to overcome a rejection based on a U.S. patent or U.S. patent application publication naming a different inventive entity which claims interfering subject matter as defined in 37 CFR 41.203(a). See MPEP § 715.05.

Jump to MPEP Source · 37 CFR 1.131(a)AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)
StatutoryInformativeAlways
[mpep-716-10-fd17aab0189ad5712085649c]
Designation Does Not Presume Inventorship
Note:
The designation of authorship or inventorship in a published article or patent does not presume inventorship for subject matter disclosed, even if claimed in an application.

Where there is a published article identifying the authorship (MPEP § 715.01(c)) or a patent or an application publication identifying the inventorship (MPEP § 715.01(a)) that discloses subject matter being claimed in an application undergoing examination, the designation of authorship or inventorship does not raise a presumption of inventorship with respect to the subject matter disclosed in the article or with respect to the subject matter disclosed but not claimed in the patent or published application so as to justify a rejection under pre-AIA 35 U.S.C. 102(f).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(f) – Derivation (MPEP 2137)Published Application as Prior Art
StatutoryInformativeAlways
[mpep-716-10-a041fae0ebe0baf1df6d0f26]
Requirement for Satisfactory Showing of Correct Inventorship
Note:
Applicants must provide an affidavit or declaration to show that the inventorship is correct, especially when there's ambiguity regarding the inventorship under pre-AIA 35 U.S.C. 102(f) or to rebut a rejection under pre-AIA 35 U.S.C. 102(a) or (e).

However, it is incumbent upon the applicant in the application, in response to an inquiry regarding the appropriate inventorship under pre-AIA 35 U.S.C. 102(f) or to rebut a rejection under pre-AIA 35 U.S.C. 102(a) or (e), to provide a satisfactory showing by way of affidavit or declaration under 37 CFR 1.132 that the inventorship of the application is correct in that the reference discloses subject matter derived from the inventor or at least one joint inventor of the application undergoing examination rather than invented by the author, patentee, or applicant of the published application notwithstanding the authorship of the article or the inventorship of the patent or published application. In re Katz, 687 F.2d 450, 455, 215 USPQ 14, 18 (CCPA 1982) (inquiry is appropriate to clarify any ambiguity created by an article regarding inventorship and it is then incumbent upon the applicant to provide “a satisfactory showing that would lead to a reasonable conclusion that [inventor or at least one joint inventor] is the… inventor” of the subject matter disclosed in the article and claimed in the application).

Jump to MPEP Source · 37 CFR 1.132AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)Pre-AIA 102(f) – Derivation (MPEP 2137)
StatutoryInformativeAlways
[mpep-716-10-36320b4a31d925ac101ab1ac]
Inventorship Established by Uncontradicted Statement
Note:
An uncontroverted clear statement from an inventor regarding disclosed subject matter can establish inventorship.

An uncontradicted “unequivocal statement” from an inventor or joint inventor regarding the subject matter disclosed in an article, patent, or published application has been accepted as establishing inventorship. In re DeBaun, 687 F.2d 459, 463, 214 USPQ 933, 936 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). When additional documentary evidence contradicts statements made by the inventor or at least one joint inventor with respect to inventorship, it may be appropriate to maintain the rejection(s). Ex parte Kroger, 219 USPQ 370 (Bd. App. 1982) (a rejection under pre-AIA 35 U.S.C. 102(f) was affirmed notwithstanding declarations by the alleged actual inventors as to their inventorship in view of a nonapplicant author submitting a letter declaring the author’s inventorship); In re Carreira, 532 F.2d 1356, 189 USPQ 461 (CCPA 1976) (disclaiming declarations from patentees were directed at the generic invention and not at the claimed species, hence no need to consider derivation of the subject matter).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)Pre-AIA 102(f) – Derivation (MPEP 2137)
StatutoryInformativeAlways
[mpep-716-10-9e0a9e882a18931b46cb222a]
Derivation Affidavit Does Not Alter Publication Date
Note:
An affidavit establishing derivation does not allow an applicant to change the publication date of a reference, preventing it from being used as prior art.

A successful 37 CFR 1.132 affidavit or declaration establishing derivation by the author, patentee, or applicant of the published application of a first reference does not enable an applicant to step into the shoes of that author, patentee, or applicant of the published application in regard to its date of publication so as to defeat a later second reference. In re Costello, 717 F.2d 1346, 1350, 219 USPQ 389, 392 (Fed. Cir. 1983).

Jump to MPEP Source · 37 CFR 1.132AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)Pre-AIA 102(f) – Derivation (MPEP 2137)
Topic

Conception and Reduction to Practice

5 rules
StatutoryInformativeAlways
[mpep-716-10-387f097590ed1ddaced20c1e]
Affidavit to Overcome Pre-AIA 102 Rejection
Note:
Submit an affidavit to show inventorship and overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)Conception and Reduction to PracticeAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)
StatutoryPermittedAlways
[mpep-716-10-0703cb0303223e08151adf58]
Documentation and Declarations to Corroborate Inventorship
Note:
Use contemporaneously created documentation and declarations by other inventors to corroborate inventorship in certain situations.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)Conception and Reduction to PracticePre-AIA 102(f) – Derivation (MPEP 2137)Pre-AIA 102(g) – Prior Invention (MPEP 2138)
StatutoryInformativeAlways
[mpep-716-10-43c0716cf4fb5240ce466852]
Declaration Required to Overcome Prior Art Rejection
Note:
A declaration must be submitted to show inventorship and overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)Conception and Reduction to PracticeAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)
StatutoryPermittedAlways
[mpep-716-10-52febc38b03562f4220afeb8]
Contemporaneous Documentation and Declarations Can Corroborate Inventorship
Note:
Documentation created at the time of conception and declarations by other inventors can be used to support claims about inventorship.

An uncontradicted “unequivocal statement” from an inventor or joint inventor regarding the subject matter disclosed in an article, patent, or published application has been accepted as establishing inventorship. In re DeBaun, 687 F.2d 459, 463, 214 USPQ 933, 936 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). When additional documentary evidence contradicts statements made by the inventor or at least one joint inventor with respect to inventorship, it may be appropriate to maintain the rejection(s). Ex parte Kroger, 219 USPQ 370 (Bd. App. 1982) (a rejection under pre-AIA 35 U.S.C. 102(f) was affirmed notwithstanding declarations by the alleged actual inventors as to their inventorship in view of a nonapplicant author submitting a letter declaring the author’s inventorship); In re Carreira, 532 F.2d 1356, 189 USPQ 461 (CCPA 1976) (disclaiming declarations from patentees were directed at the generic invention and not at the claimed species, hence no need to consider derivation of the subject matter).

Jump to MPEP SourceConception and Reduction to PracticePre-AIA 102(f) – Derivation (MPEP 2137)Pre-AIA 102(g) – Prior Invention (MPEP 2138)
StatutoryInformativeAlways
[mpep-716-10-4f8c815486b0c918b7129393]
Unequivocal Inventor Statement Establishes Ownership
Note:
An uncontradicted statement from an inventor confirms their ownership of the invention, even if contradicted by other evidence.

An uncontradicted “unequivocal statement” from an inventor or joint inventor regarding the subject matter disclosed in an article, patent, or published application has been accepted as establishing inventorship. In re DeBaun, 687 F.2d 459, 463, 214 USPQ 933, 936 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). When additional documentary evidence contradicts statements made by the inventor or at least one joint inventor with respect to inventorship, it may be appropriate to maintain the rejection(s). Ex parte Kroger, 219 USPQ 370 (Bd. App. 1982) (a rejection under pre-AIA 35 U.S.C. 102(f) was affirmed notwithstanding declarations by the alleged actual inventors as to their inventorship in view of a nonapplicant author submitting a letter declaring the author’s inventorship); In re Carreira, 532 F.2d 1356, 189 USPQ 461 (CCPA 1976) (disclaiming declarations from patentees were directed at the generic invention and not at the claimed species, hence no need to consider derivation of the subject matter).

Jump to MPEP SourceConception and Reduction to PracticeAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Antedating Reference – Pre-AIA (MPEP 2136.05)
Topic

Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)

3 rules
StatutoryInformativeAlways
[mpep-716-10-defc71c04d812adb7dc83cbe]
Attribution Affidavit or Declaration to Overcome Rejection Under Pre-AIA 35 U.S.C. 102 or 103
Note:
This rule outlines the requirements for an affidavit or declaration of attribution or prior public disclosure to overcome a rejection under pre-AIA 35 U.S.C. 102 or 103.

[Editor Note: This MPEP section is not applicable to applications subject to the first inventor to file provisions of the AIA unless being relied upon to overcome a rejection under pre-AIA 35 U.S.C. 102(g). See 35 U.S.C. 100 (note) and MPEP § 2159. For a discussion of 37 CFR 1.130, affidavits or declarations of attribution or prior public disclosure in applications subject to the first inventor to file provisions of the AIA, see MPEP § 717. “Derivation” or "derived" as used in the discussion below is in the context of pre-AIA law. “Derivation proceedings” as created in the AIA are discussed in MPEP § 2310 et seq.]

Jump to MPEP Source · 37 CFR 1.130Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA 102 (MPEP 2151)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-716-10-ab465bc4c82e2f4d1cc6f9c6]
Affidavits of Attribution for Pre-AIA 35 U.S.C. 102 Rejections Must Follow 37 CFR 1.132 Rules
Note:
These affidavits must adhere to the specific requirements set by 37 CFR 1.132 when addressing pre-AIA 35 U.S.C. 102 rejections, regardless of their designation.

Affidavits or declarations of attribution for applications subject to pre-AIA 35 U.S.C. 102 are affidavits or declarations under 37 CFR 1.132 because these are not otherwise provided for in the rules of practice. The Office will treat affidavits or declarations of attribution for applications subject to the current 35 U.S.C. 102 as affidavits or declarations under 37 CFR 1.130, and affidavits or declarations of attribution for applications subject to pre-AIA 35 U.S.C. 102 as affidavits or declarations under 37 CFR 1.132, regardless of whether the affidavit or declaration is designated as an affidavit or declaration under 37 CFR 1.130, 1.131, or 37 CFR 1.132.

Jump to MPEP Source · 37 CFR 1.132Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA PracticeAntedating Reference – Pre-AIA (MPEP 2136.05)
StatutoryInformativeAlways
[mpep-716-10-83bcde9eb2bab59e8326e61d]
Reference With Different Inventors Is Prior Art
Note:
If the reference's inventors are different from those of the application, it is considered prior art under pre-AIA 35 U.S.C. 102(a) or (e).

Same facts as above, but the authorship or inventive entity of the reference is different from the inventive entity of the application. Because the inventive entities are different, the reference is prior art under pre-AIA 35 U.S.C. 102(a) or (e).

Jump to MPEP SourcePrior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA vs Pre-AIA PracticeAntedating Reference – Pre-AIA (MPEP 2136.05)
Topic

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

3 rules
StatutoryInformativeAlways
[mpep-716-10-ee2766de137aa49e0a6ecbbf]
Requirement for Derivation Affidavit to Overcome Pre-AIA Rejection
Note:
An affidavit or declaration must be provided to establish derivation under pre-AIA law to overcome a rejection.

[Editor Note: This MPEP section is not applicable to applications subject to the first inventor to file provisions of the AIA unless being relied upon to overcome a rejection under pre-AIA 35 U.S.C. 102(g). See 35 U.S.C. 100 (note) and MPEP § 2159. For a discussion of 37 CFR 1.130, affidavits or declarations of attribution or prior public disclosure in applications subject to the first inventor to file provisions of the AIA, see MPEP § 717. “Derivation” or "derived" as used in the discussion below is in the context of pre-AIA law. “Derivation proceedings” as created in the AIA are discussed in MPEP § 2310 et seq.]

Jump to MPEP Source · 37 CFR 1.130Pre-AIA 102(f) – Derivation (MPEP 2137)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-716-10-c99f7377b9ac3e0a31e5b591]
Derivation Proceedings Under AIA
Note:
The rule discusses derivation proceedings established under the America Invents Act, which are detailed in MPEP §2310 et seq.

[Editor Note: This MPEP section is not applicable to applications subject to the first inventor to file provisions of the AIA unless being relied upon to overcome a rejection under pre-AIA 35 U.S.C. 102(g). See 35 U.S.C. 100 (note) and MPEP § 2159. For a discussion of 37 CFR 1.130, affidavits or declarations of attribution or prior public disclosure in applications subject to the first inventor to file provisions of the AIA, see MPEP § 717. “Derivation” or "derived" as used in the discussion below is in the context of pre-AIA law. “Derivation proceedings” as created in the AIA are discussed in MPEP § 2310 et seq.]

Jump to MPEP Source · 37 CFR 1.130Pre-AIA 102(f) – Derivation (MPEP 2137)AIA vs Pre-AIA PracticeAntedating Reference – Pre-AIA (MPEP 2136.05)
StatutoryPermittedAlways
[mpep-716-10-e66f5b6a49bc2494bc52e865]
Additional Documentary Evidence Contradicts Inventorship Statements
Note:
When additional evidence contradicts inventorship claims, maintain rejection. Refer to Ex parte Kroger and In re Carreira for guidance.

An uncontradicted “unequivocal statement” from an inventor or joint inventor regarding the subject matter disclosed in an article, patent, or published application has been accepted as establishing inventorship. In re DeBaun, 687 F.2d 459, 463, 214 USPQ 933, 936 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). When additional documentary evidence contradicts statements made by the inventor or at least one joint inventor with respect to inventorship, it may be appropriate to maintain the rejection(s). Ex parte Kroger, 219 USPQ 370 (Bd. App. 1982) (a rejection under pre-AIA 35 U.S.C. 102(f) was affirmed notwithstanding declarations by the alleged actual inventors as to their inventorship in view of a nonapplicant author submitting a letter declaring the author’s inventorship); In re Carreira, 532 F.2d 1356, 189 USPQ 461 (CCPA 1976) (disclaiming declarations from patentees were directed at the generic invention and not at the claimed species, hence no need to consider derivation of the subject matter).

Jump to MPEP SourcePre-AIA 102(f) – Derivation (MPEP 2137)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Topic

AIA vs Pre-AIA Practice

1 rules
StatutoryInformativeAlways
[mpep-716-10-16e84613caa7fa226948f8e8]
Affidavits Required for AIA Prior Public Disclosures
Note:
MPEP §716.10 requires affidavits or declarations to address prior public disclosures in applications subject to the first inventor to file provisions of the AIA.

[Editor Note: This MPEP section is not applicable to applications subject to the first inventor to file provisions of the AIA unless being relied upon to overcome a rejection under pre-AIA 35 U.S.C. 102(g). See 35 U.S.C. 100 (note) and MPEP § 2159. For a discussion of 37 CFR 1.130, affidavits or declarations of attribution or prior public disclosure in applications subject to the first inventor to file provisions of the AIA, see MPEP § 717. “Derivation” or "derived" as used in the discussion below is in the context of pre-AIA law. “Derivation proceedings” as created in the AIA are discussed in MPEP § 2310 et seq.]

Jump to MPEP Source · 37 CFR 1.130AIA vs Pre-AIA PracticeAntedating Reference – Pre-AIA (MPEP 2136.05)Pre-AIA 102(f) – Derivation (MPEP 2137)
Topic

Patent Examiner Testimony

1 rules
StatutoryRequiredAlways
[mpep-716-10-0b8eafdf83814a37799c2a04]
Disclaimers by Joint Inventor Optional for Prior Art Rejection
Note:
An examiner should consider disclaimers from joint inventors named in a reference when submitted, though not usually required.

Under certain circumstances an affidavit or declaration may be submitted which attempts to attribute an activity, a reference or part of a reference to the inventor or at least one joint inventor to overcome a rejection based on pre-AIA 35 U.S.C. 102 prior art. If successful, the activity or the reference is no longer applicable. When subject matter, disclosed in a patent or patent application (reference) naming an inventive entity including inventor S and another joint inventor is claimed in a later application naming inventor S without the joint inventor, the joint patent or joint patent application publication is a valid reference available as prior art under pre-AIA 35 U.S.C. 102(a), (e), or (f) until overcome by an affidavit or declaration under 37 CFR 1.131(a) showing prior invention (see MPEP § 715) or by an affidavit or declaration under 37 CFR 1.132. An unequivocal declaration under 37 CFR 1.132 by S that he/she conceived or invented the subject matter that was disclosed but not claimed in the patent or patent application publication and relied on in the rejection has been sufficient to overcome the rejection. In re DeBaun, 687 F.2d 459, 214 USPQ 933 (CCPA 1982)(declaration corroborated by attached drawing). Depending on the situation, documentation created contemporaneously with the conception/invention and/or declarations/affidavits by the other inventor(s) named in the reference may be used to corroborate inventorship. See EmeraChem Holdings, LLC v. Volkswagen Grp. of Am., Inc., 859 F.3d 1341, 123 USPQ2d 1146 (Fed. Cir. 2017). Where the reference is a U.S. patent or patent application publication which includes a claim reciting the subject matter relied upon in a rejection and that subject matter anticipates or would render obvious the subject matter of a claim in the application under examination, a declaration under 37 CFR 1.132 must also explain the presence of the additional inventor in the reference (e.g., the disclosure in claim 1 of the reference is relied upon to reject the claims; the affidavit or declaration explains that S is the sole inventor of claim 1, and the additional inventor and S are joint inventors of claim 2 of the reference). Testimony or disclaimer by the other inventor named in the reference is usually not required but, if submitted, should be considered by the examiner.

Jump to MPEP Source · 37 CFR 1.131(a)Patent Examiner TestimonyTestimony Request ProceduresUSPTO Employee Testimony
Topic

Determining Whether Application Is AIA or Pre-AIA

1 rules
StatutoryInformativeAlways
[mpep-716-10-2fb5d7e17f6d1bb289f88ec7]
Reference by Same Inventor Within One Year Not Usable Against Applicant
Note:
A reference published or patented within one year of the application's filing date by the same inventor cannot be used to reject the application under pre-AIA 35 U.S.C. 102(b).

During the search the examiner finds a reference fully describing the claimed invention. The authorship or inventive entity of the reference is the same as the inventive entity of the application and the reference was published or patented less than one year prior to the filing date of the application. The reference cannot be used against applicant because it does not satisfy the 1-year time requirement of pre-AIA 35 U.S.C. 102(b).

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIADetermining AIA vs Pre-AIA Applicability (MPEP 2159)Antedating Reference – Pre-AIA (MPEP 2136.05)
Topic

Patented Prior Art (MPEP 2152.02(a))

1 rules
StatutoryInformativeAlways
[mpep-716-10-e24797c2d828b757bc81e86a]
Same Inventor's Reference Within One Year Not Used Against Applicant
Note:
The reference by the same inventor as the application and published within one year before filing cannot be used to reject the application.

During the search the examiner finds a reference fully describing the claimed invention. The authorship or inventive entity of the reference is the same as the inventive entity of the application and the reference was published or patented less than one year prior to the filing date of the application. The reference cannot be used against applicant because it does not satisfy the 1-year time requirement of pre-AIA 35 U.S.C. 102(b).

Jump to MPEP SourcePatented Prior Art (MPEP 2152.02(a))Prior Art Under 102(a)(1) (MPEP 2152.02)Antedating Reference – Pre-AIA (MPEP 2136.05)
Topic

Assignee as Applicant Signature

1 rules
StatutoryProhibitedAlways
[mpep-716-10-bd19bcf861c5281a12f9c755]
Time Requirement for Prior Art Reference
Note:
The reference cannot be used against the applicant because it does not meet the one-year time requirement of pre-AIA 35 U.S.C. 102(b).

During the search the examiner finds a reference fully describing the claimed invention. The authorship or inventive entity of the reference is the same as the inventive entity of the application and the reference was published or patented less than one year prior to the filing date of the application. The reference cannot be used against applicant because it does not satisfy the 1-year time requirement of pre-AIA 35 U.S.C. 102(b).

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAPrior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)

Citations

Primary topicCitation
AIA vs Pre-AIA Practice
Pre-AIA 102(f) – Derivation (MPEP 2137)
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
35 U.S.C. § 100
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Antedating Reference – Pre-AIA (MPEP 2136.05)
Conception and Reduction to Practice
Patent Examiner Testimony
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
35 U.S.C. § 102
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Antedating Reference – Pre-AIA (MPEP 2136.05)
Conception and Reduction to Practice
Patent Examiner Testimony
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
35 U.S.C. § 102(a)
Assignee as Applicant Signature
Determining Whether Application Is AIA or Pre-AIA
Patented Prior Art (MPEP 2152.02(a))
35 U.S.C. § 102(b)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Conception and Reduction to Practice
Pre-AIA 102(f) – Derivation (MPEP 2137)
35 U.S.C. § 102(f)
AIA vs Pre-AIA Practice
Pre-AIA 102(f) – Derivation (MPEP 2137)
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
35 U.S.C. § 102(g)
AIA vs Pre-AIA Practice
Antedating Reference – Pre-AIA (MPEP 2136.05)
Pre-AIA 102(f) – Derivation (MPEP 2137)
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
37 CFR § 1.130
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Antedating Reference – Pre-AIA (MPEP 2136.05)
Conception and Reduction to Practice
Patent Examiner Testimony
37 CFR § 1.131(a)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Antedating Reference – Pre-AIA (MPEP 2136.05)
Conception and Reduction to Practice
Patent Examiner Testimony
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
37 CFR § 1.132
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)37 CFR § 41.203(a)
AIA vs Pre-AIA Practice
Pre-AIA 102(f) – Derivation (MPEP 2137)
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
MPEP § 2159
AIA vs Pre-AIA Practice
Pre-AIA 102(f) – Derivation (MPEP 2137)
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
MPEP § 2310
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Antedating Reference – Pre-AIA (MPEP 2136.05)
Conception and Reduction to Practice
Patent Examiner Testimony
MPEP § 715
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)MPEP § 715.01(a)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)MPEP § 715.01(c)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)MPEP § 715.05
AIA vs Pre-AIA Practice
Antedating Reference – Pre-AIA (MPEP 2136.05)
Pre-AIA 102(f) – Derivation (MPEP 2137)
Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
MPEP § 717
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Conception and Reduction to Practice
Pre-AIA 102(f) – Derivation (MPEP 2137)
In re Carreira, 532 F.2d 1356, 189 USPQ 461 (CCPA 1976)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)In re Costello, 717 F.2d 1346, 1350, 219 USPQ 389, 392 (Fed. Cir. 1983)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Antedating Reference – Pre-AIA (MPEP 2136.05)
Conception and Reduction to Practice
Patent Examiner Testimony
Pre-AIA 102(f) – Derivation (MPEP 2137)
In re DeBaun, 687 F.2d 459, 463, 214 USPQ 933, 936 (CCPA 1982)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)In re Katz, 687 F.2d 450, 455, 215 USPQ 14, 18 (CCPA 1982)

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