MPEP § 2136.02 — Content of the Prior Art Available Against the Claims (Annotated Rules)

§2136.02 Content of the Prior Art Available Against the Claims

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

This page consolidates and annotates all enforceable requirements under MPEP § 2136.02, 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.

Content of the Prior Art Available Against the Claims

This section addresses Content of the Prior Art Available Against the Claims. Primary authority: 35 U.S.C. 100, 35 U.S.C. 102(e), and 35 U.S.C. 112. Contains: 2 requirements, 2 prohibitions, 2 permissions, and 5 other statements.

Key Rules

Topic

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

5 rules
StatutoryPermittedAlways
[mpep-2136-02-65772408e4519ea01a01c57f]
Earlier Filed Applications Can Reject Claims
Note:
Under pre-AIA 35 U.S.C. 102(e), the entire disclosure of a U.S. patent, patent application publication, or international application with an earlier effective filing date can be used to reject claims.

Under pre-AIA 35 U.S.C. 102(e), the entire disclosure of a U.S. patent, a U.S. patent application publication, or an international application publication having an earlier effective U.S. filing date (which will include certain international filing dates) can be relied on to reject the claims. Sun Studs, Inc. v. ATA Equip. Leasing, Inc., 872 F.2d 978, 983, 10 USPQ2d 1338, 1342 (Fed. Cir. 1989). See MPEP § 2120.01.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Article 19 Amendment Scope
StatutoryRequiredAlways
[mpep-2136-02-fb55e415f5ba9c62dabe9d42]
Disclosure Must Be Present In Patent Publication
Note:
The disclosure relied upon in a pre-AIA 35 U.S.C. 102(e) rejection must be present in the issued patent or application publication and cannot include subject matter not included in the patent itself.

When a U.S. patent, a U.S. patent application publication, or an international application publication is used to reject claims under pre-AIA 35 U.S.C. 102(e), the disclosure relied on in the rejection must be present in the issued patent or application publication. It is the earliest effective U.S. filing date (which will include certain international filing dates) of the U.S. patent or application publication being relied on as the critical reference date and subject matter not included in the patent or application publication itself can only be used when that subject matter becomes public. Portions of the patent application which were canceled are not part of the patent or application publication and thus cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued patent or application publication. Ex parte Stalego, 154 USPQ 52 (Bd. App. 1966). Similarly, subject matter that is disclosed in an abandoned, unpublished parent application but was not carried over into the child patent or application publication may not be relied on as prior art under pre-AIA 35 U.S.C. 102(e). In re Klesper, 397 F.2d 882, 886, 158 USPQ 256, 258 (CCPA 1968). See MPEP § 901.02 for more information on availability of abandoned applications as prior art. Likewise, subject matter which is disclosed in a parent application, but not included in the child continuation-in-part (CIP) cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued or published CIP. In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection over an issued U.S. patent which was a continuation-in-part (CIP). The parent application of the U.S. patent reference contained an example 2 which was not carried over to the CIP. The court held that the subject matter embodied in the canceled example 2 could not be relied on as of either parent or child filing date. Thus, the use of example 2 subject matter to reject the claims under pre-AIA 35 U.S.C. 102(e) was improper.).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Article 19 Amendment Scope
StatutoryProhibitedAlways
[mpep-2136-02-7e2bd7541b8b295ad05648b0]
Subject Matter Disclosed Only In Parent Not Allowed in CIP Rejection
Note:
Pre-AIA 35 U.S.C. 102(e) rejection cannot rely on subject matter disclosed only in the parent application but not included in the child continuation-in-part (CIP).

When a U.S. patent, a U.S. patent application publication, or an international application publication is used to reject claims under pre-AIA 35 U.S.C. 102(e), the disclosure relied on in the rejection must be present in the issued patent or application publication. It is the earliest effective U.S. filing date (which will include certain international filing dates) of the U.S. patent or application publication being relied on as the critical reference date and subject matter not included in the patent or application publication itself can only be used when that subject matter becomes public. Portions of the patent application which were canceled are not part of the patent or application publication and thus cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued patent or application publication. Ex parte Stalego, 154 USPQ 52 (Bd. App. 1966). Similarly, subject matter that is disclosed in an abandoned, unpublished parent application but was not carried over into the child patent or application publication may not be relied on as prior art under pre-AIA 35 U.S.C. 102(e). In re Klesper, 397 F.2d 882, 886, 158 USPQ 256, 258 (CCPA 1968). See MPEP § 901.02 for more information on availability of abandoned applications as prior art. Likewise, subject matter which is disclosed in a parent application, but not included in the child continuation-in-part (CIP) cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued or published CIP. In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection over an issued U.S. patent which was a continuation-in-part (CIP). The parent application of the U.S. patent reference contained an example 2 which was not carried over to the CIP. The court held that the subject matter embodied in the canceled example 2 could not be relied on as of either parent or child filing date. Thus, the use of example 2 subject matter to reject the claims under pre-AIA 35 U.S.C. 102(e) was improper.).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryInformativeAlways
[mpep-2136-02-0964a92df5e7157c5de31e4a]
Example Not Carried to CIP Cannot Be Used as Prior Art
Note:
The example in the parent application that was not included in the CIP cannot be relied upon as prior art under pre-AIA 35 U.S.C. 102(e).

When a U.S. patent, a U.S. patent application publication, or an international application publication is used to reject claims under pre-AIA 35 U.S.C. 102(e), the disclosure relied on in the rejection must be present in the issued patent or application publication. It is the earliest effective U.S. filing date (which will include certain international filing dates) of the U.S. patent or application publication being relied on as the critical reference date and subject matter not included in the patent or application publication itself can only be used when that subject matter becomes public. Portions of the patent application which were canceled are not part of the patent or application publication and thus cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued patent or application publication. Ex parte Stalego, 154 USPQ 52 (Bd. App. 1966). Similarly, subject matter that is disclosed in an abandoned, unpublished parent application but was not carried over into the child patent or application publication may not be relied on as prior art under pre-AIA 35 U.S.C. 102(e). In re Klesper, 397 F.2d 882, 886, 158 USPQ 256, 258 (CCPA 1968). See MPEP § 901.02 for more information on availability of abandoned applications as prior art. Likewise, subject matter which is disclosed in a parent application, but not included in the child continuation-in-part (CIP) cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued or published CIP. In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection over an issued U.S. patent which was a continuation-in-part (CIP). The parent application of the U.S. patent reference contained an example 2 which was not carried over to the CIP. The court held that the subject matter embodied in the canceled example 2 could not be relied on as of either parent or child filing date. Thus, the use of example 2 subject matter to reject the claims under pre-AIA 35 U.S.C. 102(e) was improper.).

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Article 19 Amendment Scope
StatutoryRequiredAlways
[mpep-2136-02-673d54ee1258dfbe366a572e]
Patent Claims Must Be Supported by Provisional Application
Note:
At least one claim of a U.S. patent must be supported by the provisional application it claims benefit from to be usable as prior art.

Where a U.S. patent claims benefit to a provisional application, at least one claim of the patent must be supported by the disclosure of the relied upon provisional application in compliance with pre-AIA 35 U.S.C. 112, first paragraph, in order for the patent to be usable as prior art under pre-AIA 35 U.S.C. 102(e) as of the relied upon provisional application’s filing date. See MPEP § 2136.03, subsection III.

Jump to MPEP SourceAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)Prior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Topic

Article 19 Amendment Scope

3 rules
StatutoryInformativeAlways
[mpep-2136-02-1aa828ba620a23ffe0e4660b]
Canceled Example Cannot Be Used as Prior Art
Note:
The court ruled that subject matter from canceled examples cannot be used in pre-AIA 35 U.S.C. 102(e) rejections, regardless of the filing date.

When a U.S. patent, a U.S. patent application publication, or an international application publication is used to reject claims under pre-AIA 35 U.S.C. 102(e), the disclosure relied on in the rejection must be present in the issued patent or application publication. It is the earliest effective U.S. filing date (which will include certain international filing dates) of the U.S. patent or application publication being relied on as the critical reference date and subject matter not included in the patent or application publication itself can only be used when that subject matter becomes public. Portions of the patent application which were canceled are not part of the patent or application publication and thus cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued patent or application publication. Ex parte Stalego, 154 USPQ 52 (Bd. App. 1966). Similarly, subject matter that is disclosed in an abandoned, unpublished parent application but was not carried over into the child patent or application publication may not be relied on as prior art under pre-AIA 35 U.S.C. 102(e). In re Klesper, 397 F.2d 882, 886, 158 USPQ 256, 258 (CCPA 1968). See MPEP § 901.02 for more information on availability of abandoned applications as prior art. Likewise, subject matter which is disclosed in a parent application, but not included in the child continuation-in-part (CIP) cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued or published CIP. In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection over an issued U.S. patent which was a continuation-in-part (CIP). The parent application of the U.S. patent reference contained an example 2 which was not carried over to the CIP. The court held that the subject matter embodied in the canceled example 2 could not be relied on as of either parent or child filing date. Thus, the use of example 2 subject matter to reject the claims under pre-AIA 35 U.S.C. 102(e) was improper.).

Jump to MPEP SourceArticle 19 Amendment ScopeInternational Filing DatePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
StatutoryPermittedAlways
[mpep-2136-02-4d2cc3debb1660328d23a293]
U.S. Patents Show Anticipation or Obviousness
Note:
U.S. patents can demonstrate that claimed subject matter is anticipated or obvious as of their filing dates.

U.S. patents may be used as of their filing dates to show that the claimed subject matter is anticipated or obvious. Obviousness can be shown by combining other prior art with the U.S. patent reference in a 35 U.S.C. 103 rejection. Hazeltine Research v. Brenner, 382 U.S. 252, 147 USPQ 429 (1965). Similarly, certain U.S. application publications and certain international application publications may also be used as of their earliest effective U.S. filing dates (which will include certain international filing dates) to show that the claimed subject matter would have been anticipated or obvious.

Jump to MPEP SourceArticle 19 Amendment ScopePCT Article 19 AmendmentsObviousness
StatutoryInformativeAlways
[mpep-2136-02-21950c726a22772d8eb29e39]
U.S. Patents Can Show Anticipation Or Obviousness
Note:
U.S. patents, application publications, and international publications can be used to demonstrate that claimed subject matter is anticipated or obvious.

U.S. patents may be used as of their filing dates to show that the claimed subject matter is anticipated or obvious. Obviousness can be shown by combining other prior art with the U.S. patent reference in a 35 U.S.C. 103 rejection. Hazeltine Research v. Brenner, 382 U.S. 252, 147 USPQ 429 (1965). Similarly, certain U.S. application publications and certain international application publications may also be used as of their earliest effective U.S. filing dates (which will include certain international filing dates) to show that the claimed subject matter would have been anticipated or obvious.

Jump to MPEP SourceArticle 19 Amendment ScopePCT Article 19 AmendmentsObviousness
Topic

Effect of International Publication

2 rules
StatutoryInformativeAlways
[mpep-2136-02-d20d5d62415072cb922c6813]
Entire U.S. Patent Can Be Cited Against Claims
Note:
The entire disclosure of a U.S. patent can be used to reject claims under pre-AIA 35 U.S.C. 102(e).

Under pre-AIA 35 U.S.C. 102(e), the entire disclosure of a U.S. patent, a U.S. patent application publication, or an international application publication having an earlier effective U.S. filing date (which will include certain international filing dates) can be relied on to reject the claims. Sun Studs, Inc. v. ATA Equip. Leasing, Inc., 872 F.2d 978, 983, 10 USPQ2d 1338, 1342 (Fed. Cir. 1989). See MPEP § 2120.01.

Jump to MPEP SourceEffect of International PublicationAIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)Pre-AIA 102(e) – Earlier US Applications (MPEP 2136)
StatutoryProhibitedAlways
[mpep-2136-02-4d2a2324123d20c43492eabb]
Disclosed but Unpublished Parent Application Cannot Be Used as Prior Art
Note:
Subject matter disclosed in an abandoned, unpublished parent application but not included in the child patent or publication cannot be used as prior art under pre-AIA 35 U.S.C. 102(e).

When a U.S. patent, a U.S. patent application publication, or an international application publication is used to reject claims under pre-AIA 35 U.S.C. 102(e), the disclosure relied on in the rejection must be present in the issued patent or application publication. It is the earliest effective U.S. filing date (which will include certain international filing dates) of the U.S. patent or application publication being relied on as the critical reference date and subject matter not included in the patent or application publication itself can only be used when that subject matter becomes public. Portions of the patent application which were canceled are not part of the patent or application publication and thus cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued patent or application publication. Ex parte Stalego, 154 USPQ 52 (Bd. App. 1966). Similarly, subject matter that is disclosed in an abandoned, unpublished parent application but was not carried over into the child patent or application publication may not be relied on as prior art under pre-AIA 35 U.S.C. 102(e). In re Klesper, 397 F.2d 882, 886, 158 USPQ 256, 258 (CCPA 1968). See MPEP § 901.02 for more information on availability of abandoned applications as prior art. Likewise, subject matter which is disclosed in a parent application, but not included in the child continuation-in-part (CIP) cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued or published CIP. In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection over an issued U.S. patent which was a continuation-in-part (CIP). The parent application of the U.S. patent reference contained an example 2 which was not carried over to the CIP. The court held that the subject matter embodied in the canceled example 2 could not be relied on as of either parent or child filing date. Thus, the use of example 2 subject matter to reject the claims under pre-AIA 35 U.S.C. 102(e) was improper.).

Jump to MPEP SourceEffect of International PublicationPublication LanguagePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)
Topic

Statutory Authority for Examination

1 rules
StatutoryInformativeAlways
[mpep-2136-02-4e05dbcf367f25216a17e352]
Check for FITF Provision Compliance
Note:
Verify if an application is subject to the first inventor to file provisions of the AIA and follow appropriate examination procedures.

[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

Publication Language

1 rules
StatutoryProhibitedAlways
[mpep-2136-02-8a51a6ad51538e0df8c4f238]
Canceled Portions Not Used In Pre-AIA 102(e) Rejection
Note:
The rule states that portions of a patent application which were canceled cannot be relied upon in a pre-AIA 35 U.S.C. 102(e) rejection over the issued patent or application publication.

When a U.S. patent, a U.S. patent application publication, or an international application publication is used to reject claims under pre-AIA 35 U.S.C. 102(e), the disclosure relied on in the rejection must be present in the issued patent or application publication. It is the earliest effective U.S. filing date (which will include certain international filing dates) of the U.S. patent or application publication being relied on as the critical reference date and subject matter not included in the patent or application publication itself can only be used when that subject matter becomes public. Portions of the patent application which were canceled are not part of the patent or application publication and thus cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued patent or application publication. Ex parte Stalego, 154 USPQ 52 (Bd. App. 1966). Similarly, subject matter that is disclosed in an abandoned, unpublished parent application but was not carried over into the child patent or application publication may not be relied on as prior art under pre-AIA 35 U.S.C. 102(e). In re Klesper, 397 F.2d 882, 886, 158 USPQ 256, 258 (CCPA 1968). See MPEP § 901.02 for more information on availability of abandoned applications as prior art. Likewise, subject matter which is disclosed in a parent application, but not included in the child continuation-in-part (CIP) cannot be relied on in a pre-AIA 35 U.S.C. 102(e) rejection over the issued or published CIP. In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967) (The examiner made a pre-AIA 35 U.S.C. 102(e) rejection over an issued U.S. patent which was a continuation-in-part (CIP). The parent application of the U.S. patent reference contained an example 2 which was not carried over to the CIP. The court held that the subject matter embodied in the canceled example 2 could not be relied on as of either parent or child filing date. Thus, the use of example 2 subject matter to reject the claims under pre-AIA 35 U.S.C. 102(e) was improper.).

Jump to MPEP SourcePublication LanguagePrior Art Under AIA 35 U.S.C. 102 (MPEP 2150-2159)Prior Art Under Pre-AIA 35 U.S.C. 102 (MPEP 2131-2138)
Topic

Obviousness

1 rules
StatutoryPermittedAlways
[mpep-2136-02-6e495042997719a71fb22a49]
Use of U.S. Patents in Obviousness Rejections
Note:
This rule permits using U.S. patents and their filing dates to demonstrate obviousness in a 35 U.S.C. 103 rejection by combining them with other prior art.

U.S. patents may be used as of their filing dates to show that the claimed subject matter is anticipated or obvious. Obviousness can be shown by combining other prior art with the U.S. patent reference in a 35 U.S.C. 103 rejection. Hazeltine Research v. Brenner, 382 U.S. 252, 147 USPQ 429 (1965). Similarly, certain U.S. application publications and certain international application publications may also be used as of their earliest effective U.S. filing dates (which will include certain international filing dates) to show that the claimed subject matter would have been anticipated or obvious.

Jump to MPEP SourceObviousnessArticle 19 Amendment ScopePCT Article 19 Amendments
Topic

Patent Cooperation Treaty

1 rules
StatutoryPermittedAlways
[mpep-2136-02-70f352c1066732b4aef87e10]
U.S. Application and International Publications as Prior Art
Note:
Certain U.S. application publications and international application publications can be used to show that the claimed subject matter would have been anticipated or obvious as of their earliest effective U.S. filing dates.

U.S. patents may be used as of their filing dates to show that the claimed subject matter is anticipated or obvious. Obviousness can be shown by combining other prior art with the U.S. patent reference in a 35 U.S.C. 103 rejection. Hazeltine Research v. Brenner, 382 U.S. 252, 147 USPQ 429 (1965). Similarly, certain U.S. application publications and certain international application publications may also be used as of their earliest effective U.S. filing dates (which will include certain international filing dates) to show that the claimed subject matter would have been anticipated or obvious.

Jump to MPEP SourcePatent Cooperation TreatyArticle 19 Amendment ScopePCT Article 19 Amendments
Topic

35 U.S.C. 103 – Obviousness

1 rules
StatutoryInformativeAlways
[mpep-2136-02-01aaef8b9c694d59240b4595]
Requirement for Evidence of Common Ownership or Joint Research Agreement
Note:
The rule requires providing evidence of common ownership or a joint research agreement when necessary to support rejections under 35 U.S.C. 103.

See MPEP § 2146 et seq. for additional information on rejections under 35 U.S.C. 103 and evidence of common ownership or a joint research agreement.

Citations

Primary topicCitation
Statutory Authority for Examination35 U.S.C. § 100
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Article 19 Amendment Scope
Effect of International Publication
Publication Language
35 U.S.C. § 102(e)
35 U.S.C. 103 – Obviousness
Article 19 Amendment Scope
Obviousness
Patent Cooperation Treaty
35 U.S.C. § 103
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)35 U.S.C. § 112
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Effect of International Publication
MPEP § 2120.01
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)MPEP § 2136.03
35 U.S.C. 103 – ObviousnessMPEP § 2146
Statutory Authority for ExaminationMPEP § 2150
Statutory Authority for ExaminationMPEP § 2159
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Article 19 Amendment Scope
Effect of International Publication
Publication Language
MPEP § 901.02
Article 19 Amendment Scope
Obviousness
Patent Cooperation Treaty
Hazeltine Research v. Brenner, 382 U.S. 252, 147 USPQ 429 (1965)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Article 19 Amendment Scope
Effect of International Publication
Publication Language
In re Klesper, 397 F.2d 882, 886, 158 USPQ 256, 258 (CCPA 1968)
AIA 102(a)(2) – Earlier Filed Applications (MPEP 2154)
Article 19 Amendment Scope
Effect of International Publication
Publication Language
In re Lund, 376 F.2d 982, 153 USPQ 625 (CCPA 1967)

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