MPEP § 2135 — Pre-AIA 35 U.S.C. 102(d) (Annotated Rules)

§2135 Pre-AIA 35 U.S.C. 102(d)

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

This page consolidates and annotates all enforceable requirements under MPEP § 2135, 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.

Pre-AIA 35 U.S.C. 102(d)

This section addresses Pre-AIA 35 U.S.C. 102(d). Primary authority: 35 U.S.C. 100, 35 U.S.C. 102(d), and 37 CFR 1.105. Contains: 4 requirements, 1 guidance statement, and 2 other statements.

Key Rules

Topic

35 U.S.C. 102 – Novelty / Prior Art

3 rules
StatutoryRequiredAlways
[mpep-2135-7012eaf6999a43a34615f6c7]
Requirement for Foreign Patent Issuance Before US Filing
Note:
The foreign application must have been granted as a patent before filing in the United States, but does not need to be published; enforceable rights are necessary.

Pre-AIA 35 U.S.C. 102(d) establishes four conditions which, if all are present, establish a statutory bar against the granting of a patent in this country:

(C) The foreign application must have actually issued as a patent or inventor’s certificate (e.g., granted by sealing of the papers in Great Britain) before the filing in the United States. It need not be published but the patent rights granted must be enforceable.

Jump to MPEP SourceNovelty / Prior ArtPre-AIA 102(a) – Known or Used (MPEP 2132)
StatutoryRequiredAlways
[mpep-2135-e2f0ee42c8ba127018768440]
Requirement for Same Invention
Note:
The rule requires that the same invention must be involved in order to establish a statutory bar against patent granting under Pre-AIA 35 U.S.C. 102(d).

Pre-AIA 35 U.S.C. 102(d) establishes four conditions which, if all are present, establish a statutory bar against the granting of a patent in this country:

(D) The same invention must be involved.

Jump to MPEP SourceNovelty / Prior ArtPre-AIA 102(a) – Known or Used (MPEP 2132)
StatutoryRequiredAlways
[mpep-2135-25d716197baeafc7feebb9a7]
Document Must Be Patent or Certificate Not Application
Note:
The document used for pre-AIA 35 U.S.C. 102(d) prior art search must be a patent or inventor’s certificate, not a published or laid open application.

The examiner should undertake a search for an issued foreign patent for use as pre-AIA 35 U.S.C. 102(d) prior art only if there is a reasonable possibility that a foreign patent covering the same subject matter as the U.S. application has been granted to the same inventive entity before the U.S. effective filing date, i.e., the time period between foreign and U.S. filings is greater than the usual time it takes for a patent to issue in the foreign country. The document must be a patent or inventor’s certificate and not merely a published or laid open application. Normally, the probability of the inventor’s foreign patent issuing before the U.S. filing date is so slight as to make such a search unproductive. However, it should be kept in mind that the average pendency varies greatly between foreign countries.

Jump to MPEP SourceNovelty / Prior ArtDetermining Whether Application Is AIA or Pre-AIAPre-AIA 102(d) – Foreign Patenting (MPEP 2135)
Topic

Pre-AIA 102(d) – Foreign Patenting (MPEP 2135)

2 rules
StatutoryInformativeAlways
[mpep-2135-ce23d9abc0d4ead602388fbe]
Requirement for Statutory Bar on Foreign Patents
Note:
If a foreign patent is discovered by the examiner, it leads to rejection under pre-AIA 35 U.S.C. 102(d) due to statutory bar.

If such a foreign patent or inventor’s certificate is discovered by the examiner, the rejection is made under pre-AIA 35 U.S.C. 102(d) on the ground of statutory bar. See MPEP § 2135.01 for further clarification of each of the four requirements of pre-AIA 35 U.S.C. 102(d).

Jump to MPEP SourcePre-AIA 102(d) – Foreign Patenting (MPEP 2135)Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
StatutoryRecommendedAlways
[mpep-2135-28afd24ac1e1883d9e780e77]
Requirement for Foreign Patent Issuance Before U.S. Filing Date
Note:
The examiner should search for a foreign patent issued before the U.S. filing date if there is a reasonable possibility that such a patent has been granted to the same inventive entity, considering varying pendency times between countries.

The examiner should undertake a search for an issued foreign patent for use as pre-AIA 35 U.S.C. 102(d) prior art only if there is a reasonable possibility that a foreign patent covering the same subject matter as the U.S. application has been granted to the same inventive entity before the U.S. effective filing date, i.e., the time period between foreign and U.S. filings is greater than the usual time it takes for a patent to issue in the foreign country. The document must be a patent or inventor’s certificate and not merely a published or laid open application. Normally, the probability of the inventor’s foreign patent issuing before the U.S. filing date is so slight as to make such a search unproductive. However, it should be kept in mind that the average pendency varies greatly between foreign countries.

Jump to MPEP SourcePre-AIA 102(d) – Foreign Patenting (MPEP 2135)Novelty / Prior Art
Topic

Statutory Authority for Examination

1 rules
StatutoryInformativeAlways
[mpep-2135-6967f159ff0bcc308c68666c]
Check for FITF Provisions Before Examination
Note:
Ensure applications subject to first inventor to file (FITF) provisions are examined according to MPEP §2159 et seq. and not under Pre-AIA rules.

[Editor Note: This MPEP section is not 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 § 2150 et seq. for examination of applications subject to those provisions.]

Jump to MPEP SourceStatutory Authority for ExaminationExamination ProceduresFirst Inventor to File (FITF) System
Topic

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

1 rules
StatutoryRequiredAlways
[mpep-2135-7484358573f7cd8a52b80439]
Requirement for Novelty Under Pre-AIA 35 U.S.C. 102(d)
Note:
A patent is not entitled to issuance if the invention was known or used in the United States before the effective filing date, or patented or described in a printed publication in the U.S. or abroad before the filing date.

A person shall be entitled to a patent unless –

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 102 (MPEP 2151)
Topic

Pre-AIA 102(a) – Known or Used (MPEP 2132)

1 rules
StatutoryRequiredAlways
[mpep-2135-20f9aef3b4523403bb0d6bb0]
Conditions for Foreign Priority Under Pre-AIA 35 U.S.C. 102(d)
Note:
Establishes four conditions that, if all met, bar a patent from being granted in the United States.
Pre-AIA 35 U.S.C. 102(d) establishes four conditions which, if all are present, establish a statutory bar against the granting of a patent in this country:
  • (A) The foreign application must be filed more than 12 months before the effective filing date of the claimed invention in the United States (see MPEP § 2139.01 regarding determination of the effective U.S. filing date when an application is subject to pre-AIA 35 U.S.C. 102);
  • (B) The foreign and United States applications must have been filed by the same applicant or by the same applicant's legal representatives or assigns.
  • (C) The foreign application must have actually issued as a patent or inventor’s certificate (e.g., granted by sealing of the papers in Great Britain) before the filing in the United States. It need not be published but the patent rights granted must be enforceable.
  • (D) The same invention must be involved.
Jump to MPEP SourcePre-AIA 102(a) – Known or Used (MPEP 2132)Pre-AIA 102(b) – Statutory Bar (MPEP 2133)
Topic

Assignee as Applicant Signature

1 rules
StatutoryRequiredAlways
[mpep-2135-8b1b27c61618b66dc7636226]
Requirement for Same Applicant
Note:
The foreign and U.S. applications must be filed by the same applicant or their legal representatives or assigns.

Pre-AIA 35 U.S.C. 102(d) establishes four conditions which, if all are present, establish a statutory bar against the granting of a patent in this country:

(B) The foreign and United States applications must have been filed by the same applicant or by the same applicant's legal representatives or assigns.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIANovelty / Prior Art
Topic

Determining Whether Application Is AIA or Pre-AIA

1 rules
StatutoryRecommendedAlways
[mpep-2135-1cdb8eca32de2628da5a10dc]
Search for Foreign Patents Issued Before U.S. Filing Date
Note:
The examiner must search for foreign patents issued to the same inventive entity before the U.S. filing date if there is a reasonable possibility that such a patent covers the same subject matter.

The examiner should undertake a search for an issued foreign patent for use as pre-AIA 35 U.S.C. 102(d) prior art only if there is a reasonable possibility that a foreign patent covering the same subject matter as the U.S. application has been granted to the same inventive entity before the U.S. effective filing date, i.e., the time period between foreign and U.S. filings is greater than the usual time it takes for a patent to issue in the foreign country. The document must be a patent or inventor’s certificate and not merely a published or laid open application. Normally, the probability of the inventor’s foreign patent issuing before the U.S. filing date is so slight as to make such a search unproductive. However, it should be kept in mind that the average pendency varies greatly between foreign countries.

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIAPre-AIA 102(d) – Foreign Patenting (MPEP 2135)
Topic

Patent Search Databases

1 rules
StatutoryPermittedAlways
[mpep-2135-6619a96e6f1fae758f5efc27]
Examiner Can Use Electronic Databases for Patent Searches
Note:
Examiners and staff from the Scientific and Technical Information Center are permitted to conduct patent searches on electronic databases.

The search for a granted patent can be accomplished on an electronic database either by the examiner or by the staff of the Scientific and Technical Information Center. See MPEP § 901.06(a), subsection IV.B., for more information on online searching. Alternatively, if the examiner has a reasonable basis for concluding that pre-AIA 35 U.S.C. 102(d) prior art might exist, the examiner may make a requirement for information under 37 CFR 1.105. See MPEP § 704.10 et seq.

Jump to MPEP Source · 37 CFR 1.105Patent Search DatabasesPatent Search SystemsSearch Tools and Resources
Topic

Patent Search Systems

1 rules
StatutoryPermittedAlways
[mpep-2135-6cf29bb7e5edd3e1a2e67ec3]
Examiner May Require Information on Pre-AIA Prior Art
Note:
If the examiner has a reasonable basis to believe pre-AIA 35 U.S.C. 102(d) prior art might exist, they may require information under 37 CFR 1.105.

The search for a granted patent can be accomplished on an electronic database either by the examiner or by the staff of the Scientific and Technical Information Center. See MPEP § 901.06(a), subsection IV.B., for more information on online searching. Alternatively, if the examiner has a reasonable basis for concluding that pre-AIA 35 U.S.C. 102(d) prior art might exist, the examiner may make a requirement for information under 37 CFR 1.105. See MPEP § 704.10 et seq.

Jump to MPEP Source · 37 CFR 1.105Patent Search SystemsSearch and Requirements for InformationPatent Search Databases

Citations

Primary topicCitation
Statutory Authority for Examination35 U.S.C. § 100
Pre-AIA 102(a) – Known or Used (MPEP 2132)35 U.S.C. § 102
35 U.S.C. 102 – Novelty / Prior Art
Assignee as Applicant Signature
Determining Whether Application Is AIA or Pre-AIA
Patent Search Databases
Patent Search Systems
Pre-AIA 102(a) – Known or Used (MPEP 2132)
Pre-AIA 102(d) – Foreign Patenting (MPEP 2135)
35 U.S.C. § 102(d)
Patent Search Databases
Patent Search Systems
37 CFR § 1.105
Pre-AIA 102(d) – Foreign Patenting (MPEP 2135)MPEP § 2135.01
Pre-AIA 102(a) – Known or Used (MPEP 2132)MPEP § 2139.01
Statutory Authority for ExaminationMPEP § 2150
Statutory Authority for ExaminationMPEP § 2159
Patent Search Databases
Patent Search Systems
MPEP § 704.10
Patent Search Databases
Patent Search Systems
MPEP § 901.06(a)

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