MPEP § 2154.01 — Prior Art Under AIA 35 U.S.C. 102(a)(2) “U.S. Patent Documents” (Annotated Rules)

§2154.01 Prior Art Under AIA 35 U.S.C. 102(a)(2) “U.S. Patent Documents”

USPTO MPEP version: BlueIron's Update: 2026-01-17

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

Prior Art Under AIA 35 U.S.C. 102(a)(2) “U.S. Patent Documents”

This section addresses Prior Art Under AIA 35 U.S.C. 102(a)(2) “U.S. Patent Documents”. Primary authority: 35 U.S.C. 100, 35 U.S.C. 102, and 35 U.S.C. 102(a)(2). Contains: 3 permissions and 5 other statements.

Key Rules

Topic

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

3 rules
StatutoryInformativeAlways
[mpep-2154-01-9c7e7549ee2b401d2053e16b]
Prior Art Under AIA 102(a)(2)
Note:
Identifies types of U.S. patent documents that can serve as prior art if they name another inventor.

AIA 35 U.S.C. 102(a)(2) sets forth three types of patent documents that are available as prior art as of the date they were effectively filed with respect to the subject matter relied upon in the document if they name another inventor: (1) U.S. patents; (2) U.S. patent application publications; and (3) certain WIPO published applications. These documents are referred to collectively as “U.S. patent documents.” These documents may have different prior art effects under pre-AIA 35 U.S.C. 102(e) than under AIA 35 U.S.C. 102(a)(2). Note that a U.S. patent document may also be prior art under AIA 35 U.S.C. 102(a)(1) if its issue or publication date is before the effective filing date of the claimed invention in question.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Patented Prior Art (MPEP 2152.02(a))
StatutoryInformativeAlways
[mpep-2154-01-612ba8d76301ea326f3e1f4e]
U.S. Patent Documents as Prior Art Under AIA 102(a)(2)
Note:
Identifies U.S. patents, patent application publications, and certain WIPO applications as prior art under the AIA 35 U.S.C. 102(a)(2) if they name another inventor.

AIA 35 U.S.C. 102(a)(2) sets forth three types of patent documents that are available as prior art as of the date they were effectively filed with respect to the subject matter relied upon in the document if they name another inventor: (1) U.S. patents; (2) U.S. patent application publications; and (3) certain WIPO published applications. These documents are referred to collectively as “U.S. patent documents.” These documents may have different prior art effects under pre-AIA 35 U.S.C. 102(e) than under AIA 35 U.S.C. 102(a)(2). Note that a U.S. patent document may also be prior art under AIA 35 U.S.C. 102(a)(1) if its issue or publication date is before the effective filing date of the claimed invention in question.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Patented Prior Art (MPEP 2152.02(a))
StatutoryInformativeAlways
[mpep-2154-01-f771b58faa3261323a68cda5]
Criteria for U.S. Patent Document Effective Filing Under AIA 102(a)(2)
Note:
Determines when subject matter in a U.S. patent document was effectively filed before the claimed invention’s effective filing date.

If the issue date of the U.S. patent or publication date of the U.S. patent application publication or WIPO published application is not before the effective filing date of the claimed invention, it may be applicable as prior art under AIA 35 U.S.C. 102(a)(2) if it was “effectively filed” before the effective filing date of the claimed invention in question with respect to the subject matter relied upon to reject the claim. MPEP § 2152.01 discusses the “effective filing date” of a claimed invention. AIA 35 U.S.C. 102(d) sets forth the criteria to determine when subject matter described in a U.S. patent document was “effectively filed” for purposes of AIA 35 U.S.C. 102(a)(2).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Patented Prior Art (MPEP 2152.02(a))Effectively Filed Date for 102(a)(2)
Topic

Determining Whether Application Is AIA or Pre-AIA

3 rules
StatutoryPermittedAlways
[mpep-2154-01-82f62be81ed52436babb9225]
U.S. Patent Document May Be Prior Art Before Effective Filing Date
Note:
A U.S. patent document may serve as prior art if its issue or publication date precedes the effective filing date of the claimed invention.

AIA 35 U.S.C. 102(a)(2) sets forth three types of patent documents that are available as prior art as of the date they were effectively filed with respect to the subject matter relied upon in the document if they name another inventor: (1) U.S. patents; (2) U.S. patent application publications; and (3) certain WIPO published applications. These documents are referred to collectively as “U.S. patent documents.” These documents may have different prior art effects under pre-AIA 35 U.S.C. 102(e) than under AIA 35 U.S.C. 102(a)(2). Note that a U.S. patent document may also be prior art under AIA 35 U.S.C. 102(a)(1) if its issue or publication date is before the effective filing date of the claimed invention in question.

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIAAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)
StatutoryPermittedAlways
[mpep-2154-01-55390a9b21cd96b1c26d5268]
U.S. Patent Document as Prior Art if Effectively Filed Before Claimed Invention’s Effective Filing Date
Note:
A U.S. patent document may serve as prior art under AIA 35 U.S.C. 102(a)(2) if it was effectively filed before the claimed invention's effective filing date, even if its issue or publication date is not earlier.

If the issue date of the U.S. patent or publication date of the U.S. patent application publication or WIPO published application is not before the effective filing date of the claimed invention, it may be applicable as prior art under AIA 35 U.S.C. 102(a)(2) if it was “effectively filed” before the effective filing date of the claimed invention in question with respect to the subject matter relied upon to reject the claim. MPEP § 2152.01 discusses the “effective filing date” of a claimed invention. AIA 35 U.S.C. 102(d) sets forth the criteria to determine when subject matter described in a U.S. patent document was “effectively filed” for purposes of AIA 35 U.S.C. 102(a)(2).

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIAAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Patented Prior Art (MPEP 2152.02(a))
StatutoryInformativeAlways
[mpep-2154-01-0e94536d2bc9ccbfd473dbd6]
Effective Filing Date of Invention
Note:
Determines when a claimed invention was effectively filed for purposes of AIA 35 U.S.C. 102(a)(2) prior art.

If the issue date of the U.S. patent or publication date of the U.S. patent application publication or WIPO published application is not before the effective filing date of the claimed invention, it may be applicable as prior art under AIA 35 U.S.C. 102(a)(2) if it was “effectively filed” before the effective filing date of the claimed invention in question with respect to the subject matter relied upon to reject the claim. MPEP § 2152.01 discusses the “effective filing date” of a claimed invention. AIA 35 U.S.C. 102(d) sets forth the criteria to determine when subject matter described in a U.S. patent document was “effectively filed” for purposes of AIA 35 U.S.C. 102(a)(2).

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIADetermining AIA vs Pre-AIA Applicability (MPEP 2159)AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Topic

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

2 rules
StatutoryInformativeAlways
[mpep-2154-01-2eb5c1147ad392e9cd08f3f1]
Requirement for Applications Subject to FITF Provisions
Note:
This rule applies to applications subject to the first inventor to file (FITF) provisions of the AIA, as set forth in 35 U.S.C. 100.

[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)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)Statutory Authority for Examination
StatutoryPermittedAlways
[mpep-2154-01-51361d29b8667e474003f8de]
U.S. Patent Documents Have Different Prior Art Effects Under Pre-AIA and AIA
Note:
This rule states that U.S. patent documents may have varying prior art effects under pre-AIA and AIA sections of the patent law.

AIA 35 U.S.C. 102(a)(2) sets forth three types of patent documents that are available as prior art as of the date they were effectively filed with respect to the subject matter relied upon in the document if they name another inventor: (1) U.S. patents; (2) U.S. patent application publications; and (3) certain WIPO published applications. These documents are referred to collectively as “U.S. patent documents.” These documents may have different prior art effects under pre-AIA 35 U.S.C. 102(e) than under AIA 35 U.S.C. 102(a)(2). Note that a U.S. patent document may also be prior art under AIA 35 U.S.C. 102(a)(1) if its issue or publication date is before the effective filing date of the claimed invention in question.

Jump to MPEP SourcePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)AIA 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)
Determining Whether Application Is AIA or Pre-AIA
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(a)(1)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Determining Whether Application Is AIA or Pre-AIA
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(a)(2)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Determining Whether Application Is AIA or Pre-AIA
35 U.S.C. § 102(d)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Determining Whether Application Is AIA or Pre-AIA
Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
35 U.S.C. § 102(e)
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
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Determining Whether Application Is AIA or Pre-AIA
MPEP § 2152.01
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: 2026-01-17