MPEP § 2146.03 — Examination Procedure With Respect to Pre-AIA 35 U.S.C. 103(c) (Annotated Rules)

§2146.03 Examination Procedure With Respect to Pre-AIA 35 U.S.C. 103(c)

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

This page consolidates and annotates all enforceable requirements under MPEP § 2146.03, 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.

Examination Procedure With Respect to Pre-AIA 35 U.S.C. 103(c)

This section addresses Examination Procedure With Respect to Pre-AIA 35 U.S.C. 103(c). Primary authority: 35 U.S.C. 100, 35 U.S.C. 102(e), and 35 U.S.C. 103(c). Contains: 2 requirements, 2 permissions, and 9 other statements.

Key Rules

Topic

Obviousness Under AIA (MPEP 2158)

11 rules
StatutoryInformativeAlways
[mpep-2146-03-f13ebe7d167ddc0cf78dbacb]
Anticipatory Rejection Reference Not Disqualified Under Pre-AIA 103(c)
Note:
A reference used in an anticipatory rejection under pre-AIA 35 U.S.C. 102(e), (f), or (g) is not disqualified as prior art if it is disqualified under pre-AIA 35 U.S.C. 103(c).
Examiners are reminded that a reference used in an anticipatory rejection under pre-AIA 35 U.S.C. 102(e), (f), or (g) is not disqualified as prior art if the reference is disqualified under pre-AIA 35 U.S.C. 103(c). Generally, such a reference is only disqualified when
  • (A) a proper submission is filed,
  • (B) the reference only qualifies as prior art under pre-AIA 35 U.S.C. 102(e), (f) or (g) (e.g., not pre-AIA 35 U.S.C. 102(a) or (b)), and
  • (C) the reference was used in an obviousness rejection under pre-AIA 35 U.S.C. 103(a).
Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-36abb7a9eb44ac0288b787e9]
Proper Submission Required to Disqualify Reference Under Pre-AIA 35 U.S.C. 103(c)
Note:
Examiners must require a proper submission to disqualify a reference used in an anticipatory rejection under pre-AIA 35 U.S.C. 102(e), (f), or (g) as prior art if it is disqualified under pre-AIA 35 U.S.C. 103(c).

Examiners are reminded that a reference used in an anticipatory rejection under pre-AIA 35 U.S.C. 102(e), (f), or (g) is not disqualified as prior art if the reference is disqualified under pre-AIA 35 U.S.C. 103(c). Generally, such a reference is only disqualified when (A) a proper submission is filed,

Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-ca76a69c48f6aa1146a63443]
Reference Used in Obviousness Rejection Not Disqualified
Note:
A reference used in an obviousness rejection under pre-AIA 35 U.S.C. 103(a) is not disqualified as prior art if it is disqualified under pre-AIA 35 U.S.C. 103(c).

Examiners are reminded that a reference used in an anticipatory rejection under pre-AIA 35 U.S.C. 102(e), (f), or (g) is not disqualified as prior art if the reference is disqualified under pre-AIA 35 U.S.C. 103(c). Generally, such a reference is only disqualified when

(C) the reference was used in an obviousness rejection under pre-AIA 35 U.S.C. 103(a).

Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-44a845894feb917987495434]
Examiner to Examine on All Grounds Except Pre-AIA 103(c)
Note:
The examiner must examine the application on all grounds except those related to pre-AIA 35 U.S.C. 103(c) until a reference is disqualified as prior art.
If the application file being examined has not established that the reference is disqualified as prior art under pre-AIA 35 U.S.C. 103(c), the examiner will:
Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-1542099c60d33dfb6cc0f5b1]
Examiner Must Examine All Grounds After Disqualifying Prior Art
Note:
The examiner must examine the application for all grounds of rejection, including obviousness and double patenting, after a reference is disqualified as prior art under pre-AIA 35 U.S.C. 103(c).
If the application being examined has established that the reference is disqualified as prior art under pre-AIA 35 U.S.C. 103(c) the examiner will:
  • (A) examine the applications as to all grounds, except pre-AIA 35 U.S.C. 102(e), (f) and (g) including provisional rejections based on provisional prior art under pre-AIA 35 U.S.C. 102(e), as they apply through 35 U.S.C. 103(a);
  • (B) examine the applications for double patenting, including statutory and nonstatutory double patenting, and make a provisional rejection, if appropriate; and
  • (C) invite the applicant to file a terminal disclaimer to overcome any provisional or actual nonstatutory double patenting rejection, if appropriate (see 37 CFR 1.321).
Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryPermittedAlways
[mpep-2146-03-b0fc1c70ff3494153e2dfb10]
Commonly Owned Applications May Be Rejected for Double Patenting Even With 120 Benefit
Note:
Applications owned by different entities may be rejected for double patenting even if the later application claims benefit from the earlier one, subject to conditions outlined in MPEP § 804 et seq.

Commonly owned applications of different inventive entities may be rejected on the ground of double patenting, even if the later filed application claims 35 U.S.C. 120 benefit to the earlier application, subject to the conditions discussed in MPEP § 804 et seq. In addition, a double patenting rejection may arise as a result of the amendment to pre-AIA 35 U.S.C. 103(c) by the CREATE Act (Public Law 108-453, 118 Stat. 3596 (2004)). Congress recognized that this amendment to 35 U.S.C. 103(c) would result in situations in which there would be double patenting rejections between applications not owned by the same party (see H.R. Rep. No. 108-425, at 5-6 (2003). For purposes of double patenting analysis, the application or patent and the subject matter disqualified under pre-AIA 35 U.S.C. 103(c) as amended by the CREATE Act will be treated as if commonly owned.

Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryPermittedAlways
[mpep-2146-03-5f28e0d7cd9ebb641c00dbe4]
Double Patenting Rejection Due to CREATE Act Amendment
Note:
This rule explains that a double patenting rejection may occur due to the amendment of pre-AIA 35 U.S.C. 103(c) by the CREATE Act, even if applications are not commonly owned.

Commonly owned applications of different inventive entities may be rejected on the ground of double patenting, even if the later filed application claims 35 U.S.C. 120 benefit to the earlier application, subject to the conditions discussed in MPEP § 804 et seq. In addition, a double patenting rejection may arise as a result of the amendment to pre-AIA 35 U.S.C. 103(c) by the CREATE Act (Public Law 108-453, 118 Stat. 3596 (2004)). Congress recognized that this amendment to 35 U.S.C. 103(c) would result in situations in which there would be double patenting rejections between applications not owned by the same party (see H.R. Rep. No. 108-425, at 5-6 (2003). For purposes of double patenting analysis, the application or patent and the subject matter disqualified under pre-AIA 35 U.S.C. 103(c) as amended by the CREATE Act will be treated as if commonly owned.

Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-90fb27aa884d7d530cc97a64]
Double Patenting Between Non-Commonly Owned Applications
Note:
This rule allows for double patenting rejections between applications not owned by the same party, even if they claim a common parent under pre-AIA 35 U.S.C. 103(c).

Commonly owned applications of different inventive entities may be rejected on the ground of double patenting, even if the later filed application claims 35 U.S.C. 120 benefit to the earlier application, subject to the conditions discussed in MPEP § 804 et seq. In addition, a double patenting rejection may arise as a result of the amendment to pre-AIA 35 U.S.C. 103(c) by the CREATE Act (Public Law 108-453, 118 Stat. 3596 (2004)). Congress recognized that this amendment to 35 U.S.C. 103(c) would result in situations in which there would be double patenting rejections between applications not owned by the same party (see H.R. Rep. No. 108-425, at 5-6 (2003). For purposes of double patenting analysis, the application or patent and the subject matter disqualified under pre-AIA 35 U.S.C. 103(c) as amended by the CREATE Act will be treated as if commonly owned.

Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-042c8c3a2763599b9f67868f]
Commonly Owned Subject Matter for Double Patenting
Note:
For double patenting analysis, applications and patents disqualified under pre-AIA 35 U.S.C. 103(c) are treated as if commonly owned.

Commonly owned applications of different inventive entities may be rejected on the ground of double patenting, even if the later filed application claims 35 U.S.C. 120 benefit to the earlier application, subject to the conditions discussed in MPEP § 804 et seq. In addition, a double patenting rejection may arise as a result of the amendment to pre-AIA 35 U.S.C. 103(c) by the CREATE Act (Public Law 108-453, 118 Stat. 3596 (2004)). Congress recognized that this amendment to 35 U.S.C. 103(c) would result in situations in which there would be double patenting rejections between applications not owned by the same party (see H.R. Rep. No. 108-425, at 5-6 (2003). For purposes of double patenting analysis, the application or patent and the subject matter disqualified under pre-AIA 35 U.S.C. 103(c) as amended by the CREATE Act will be treated as if commonly owned.

Jump to MPEP SourceObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-4ef9e891dc3e55691fade79e]
Provisional Rejection for Pending Applications
Note:
A rejection based on a pending application is considered provisional and prevents obtaining multiple patents with different expiration dates covering nearly identical subject matter.

A rejection based on a pending application would be a provisional rejection. The practice of rejecting claims on the ground of nonstatutory double patenting in commonly owned applications of different inventive entities is in accordance with existing case law and prevents an organization from obtaining two or more patents with different expiration dates covering nearly identical subject matter. See MPEP § 804 for guidance on nonstatutory double patenting issues. In accordance with established patent law doctrines, nonstatutory double patenting rejections can be overcome in certain circumstances by disclaiming, pursuant to the existing provisions of 37 CFR 1.321, the terminal portion of the term of the later patent and including in the disclaimer a provision that the patent shall be enforceable only for and during the period the patent is commonly owned with the application or patent which formed the basis for the rejection, thereby eliminating the problem of extending patent life. For a nonstatutory double patenting rejection based on a non-commonly owned patent (treated as if commonly owned pursuant to the CREATE Act), the nonstatutory double patenting rejection may be obviated by filing a terminal disclaimer in accordance with 37 CFR 1.321(d). See MPEP §§ 804, 804.02 and 1490, subsection VI.

Jump to MPEP Source · 37 CFR 1.321Obviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
StatutoryRequiredAlways
[mpep-2146-03-9073560722230d58e6154aa3]
Terminal Disclaim Requirement for Nonstatutory Double Patenting
Note:
Requires disclaiming the terminal portion of a later patent term and limiting enforceability to periods when patents are commonly owned to overcome nonstatutory double patenting rejections.

A rejection based on a pending application would be a provisional rejection. The practice of rejecting claims on the ground of nonstatutory double patenting in commonly owned applications of different inventive entities is in accordance with existing case law and prevents an organization from obtaining two or more patents with different expiration dates covering nearly identical subject matter. See MPEP § 804 for guidance on nonstatutory double patenting issues. In accordance with established patent law doctrines, nonstatutory double patenting rejections can be overcome in certain circumstances by disclaiming, pursuant to the existing provisions of 37 CFR 1.321, the terminal portion of the term of the later patent and including in the disclaimer a provision that the patent shall be enforceable only for and during the period the patent is commonly owned with the application or patent which formed the basis for the rejection, thereby eliminating the problem of extending patent life. For a nonstatutory double patenting rejection based on a non-commonly owned patent (treated as if commonly owned pursuant to the CREATE Act), the nonstatutory double patenting rejection may be obviated by filing a terminal disclaimer in accordance with 37 CFR 1.321(d). See MPEP §§ 804, 804.02 and 1490, subsection VI.

Jump to MPEP Source · 37 CFR 1.321Obviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)AIA vs Pre-AIA Practice
Topic

Joint Research Agreements (MPEP 2156)

2 rules
StatutoryInformativeAlways
[mpep-2146-03-dbd6036047327cd54f0b9f1a]
Rule Not Applicable to FITF Applications
Note:
This rule does not apply to applications subject to examination under the first inventor to file (FITF) provisions of the AIA.

[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. See MPEP §§ 717.02 et seq., 2154.02(c) and 2156 for the examination of applications subject to the first inventor to file provisions of the AIA involving, inter alia, commonly owned subject matter or a joint research agreement.]

Jump to MPEP SourceJoint Research Agreements (MPEP 2156)Statutory Authority for ExaminationAIA vs Pre-AIA Practice
StatutoryInformativeAlways
[mpep-2146-03-81d2c73d6374a71632471346]
Requirement for Establishing Common Ownership
Note:
The rule requires establishing common ownership to meet certain requirements in the examination procedure with respect to Pre-AIA 35 U.S.C. 103(c).

See MPEP § 2146.02 for additional information pertaining to establishing common ownership.

Jump to MPEP SourceJoint Research Agreements (MPEP 2156)Obviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)
Topic

Assignee as Applicant Signature

2 rules
StatutoryInformativeAlways
[mpep-2146-03-739bab3128bfdd7e2fb5f714]
Requirement for Same Person Ownership Statement
Note:
The applicant must state that the application and reference were, at the time of invention, owned by or subject to an obligation of assignment to the same person(s) or organization(s).

Applications and patents will be considered to be owned by, or subject to an obligation of assignment to, the same person, at the time the invention was made, if the applicant(s) or patent owner(s) make(s) a statement to the effect that the application and the reference were, at the time the invention was made, owned by, or subject to an obligation of assignment to, the same person(s) or organization(s). In order to overcome a rejection under pre-AIA 35 U.S.C. 103(a) based upon a reference which qualifies as prior art under only one or more of pre-AIA 35 U.S.C. 102(e), (f), or (g), via the CREATE Act, the applicant must comply with the statute and the rules of practice in effect.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAObviousness Under AIA (MPEP 2158)
StatutoryRequiredAlways
[mpep-2146-03-9fc12cbce23c1f530bcdc902]
Requirement for Complying with Statute and Rules of Practice
Note:
Applicants must comply with the statute and rules of practice to overcome a rejection under pre-AIA 35 U.S.C. 103(a) based on prior art under 102(e), (f), or (g).

Applications and patents will be considered to be owned by, or subject to an obligation of assignment to, the same person, at the time the invention was made, if the applicant(s) or patent owner(s) make(s) a statement to the effect that the application and the reference were, at the time the invention was made, owned by, or subject to an obligation of assignment to, the same person(s) or organization(s). In order to overcome a rejection under pre-AIA 35 U.S.C. 103(a) based upon a reference which qualifies as prior art under only one or more of pre-AIA 35 U.S.C. 102(e), (f), or (g), via the CREATE Act, the applicant must comply with the statute and the rules of practice in effect.

Jump to MPEP SourceAssignee as Applicant SignatureApplicant and Assignee Filing Under AIAObviousness Under AIA (MPEP 2158)
Topic

Determining Whether Application Is AIA or Pre-AIA

1 rules
StatutoryInformativeAlways
[mpep-2146-03-2a321e4045feaaa44d03a90a]
Examiner Applies Best References Until Disqualified
Note:
The examiner will apply the best references against the claimed invention for rejections under 35 U.S.C. 102 and 103(a) until a reference is disqualified as prior art under pre-AIA 35 U.S.C. 103(c).

If the application file being examined has not established that the reference is disqualified as prior art under pre-AIA 35 U.S.C. 103(c), the examiner will:

(D) apply the best references against the claimed invention by rejections under 35 U.S.C. 102 and 103(a), including any rejections under 35 U.S.C. 103(a) based on prior art under pre-AIA 35 U.S.C. 102(e), (f) and/or (g), until such time that the reference is disqualified under pre-AIA 35 U.S.C. 103(c).

Jump to MPEP SourceDetermining Whether Application Is AIA or Pre-AIADetermining AIA vs Pre-AIA Applicability (MPEP 2159)Obviousness Under AIA (MPEP 2158)
Topic

Patent Term Expiration

1 rules
StatutoryInformativeAlways
[mpep-2146-03-0f5c0a189c8ac6daa56afad5]
Prevent Multiple Patents on Identical Subject Matter
Note:
Reject claims based on nonstatutory double patenting to prevent an organization from obtaining multiple patents with different expiration dates covering nearly identical subject matter.

A rejection based on a pending application would be a provisional rejection. The practice of rejecting claims on the ground of nonstatutory double patenting in commonly owned applications of different inventive entities is in accordance with existing case law and prevents an organization from obtaining two or more patents with different expiration dates covering nearly identical subject matter. See MPEP § 804 for guidance on nonstatutory double patenting issues. In accordance with established patent law doctrines, nonstatutory double patenting rejections can be overcome in certain circumstances by disclaiming, pursuant to the existing provisions of 37 CFR 1.321, the terminal portion of the term of the later patent and including in the disclaimer a provision that the patent shall be enforceable only for and during the period the patent is commonly owned with the application or patent which formed the basis for the rejection, thereby eliminating the problem of extending patent life. For a nonstatutory double patenting rejection based on a non-commonly owned patent (treated as if commonly owned pursuant to the CREATE Act), the nonstatutory double patenting rejection may be obviated by filing a terminal disclaimer in accordance with 37 CFR 1.321(d). See MPEP §§ 804, 804.02 and 1490, subsection VI.

Jump to MPEP Source · 37 CFR 1.321Patent Term ExpirationPatent TermObviousness Under AIA (MPEP 2158)
Topic

Effect of Terminal Disclaimer on Term

1 rules
StatutoryPermittedAlways
[mpep-2146-03-c946e6be1d915d8193080d4c]
Terminal Disclaim Required for Non-Commonly Owned Patents
Note:
A terminal disclaimer must be filed to overcome a nonstatutory double patenting rejection based on a non-commonly owned patent treated as commonly owned under the CREATE Act.

A rejection based on a pending application would be a provisional rejection. The practice of rejecting claims on the ground of nonstatutory double patenting in commonly owned applications of different inventive entities is in accordance with existing case law and prevents an organization from obtaining two or more patents with different expiration dates covering nearly identical subject matter. See MPEP § 804 for guidance on nonstatutory double patenting issues. In accordance with established patent law doctrines, nonstatutory double patenting rejections can be overcome in certain circumstances by disclaiming, pursuant to the existing provisions of 37 CFR 1.321, the terminal portion of the term of the later patent and including in the disclaimer a provision that the patent shall be enforceable only for and during the period the patent is commonly owned with the application or patent which formed the basis for the rejection, thereby eliminating the problem of extending patent life. For a nonstatutory double patenting rejection based on a non-commonly owned patent (treated as if commonly owned pursuant to the CREATE Act), the nonstatutory double patenting rejection may be obviated by filing a terminal disclaimer in accordance with 37 CFR 1.321(d). See MPEP §§ 804, 804.02 and 1490, subsection VI.

Jump to MPEP Source · 37 CFR 1.321Effect of Terminal Disclaimer on TermObviousness Under AIA (MPEP 2158)Obviousness Under Pre-AIA (MPEP 2141-2146)

Citations

Primary topicCitation
Joint Research Agreements (MPEP 2156)35 U.S.C. § 100
Determining Whether Application Is AIA or Pre-AIA
Obviousness Under AIA (MPEP 2158)
35 U.S.C. § 102
Obviousness Under AIA (MPEP 2158)35 U.S.C. § 102(a)
Assignee as Applicant Signature
Determining Whether Application Is AIA or Pre-AIA
Obviousness Under AIA (MPEP 2158)
35 U.S.C. § 102(e)
Obviousness Under AIA (MPEP 2158)35 U.S.C. § 103
Assignee as Applicant Signature
Determining Whether Application Is AIA or Pre-AIA
Obviousness Under AIA (MPEP 2158)
35 U.S.C. § 103(a)
Determining Whether Application Is AIA or Pre-AIA
Obviousness Under AIA (MPEP 2158)
35 U.S.C. § 103(c)
Obviousness Under AIA (MPEP 2158)35 U.S.C. § 120
Effect of Terminal Disclaimer on Term
Obviousness Under AIA (MPEP 2158)
Patent Term Expiration
37 CFR § 1.321
Effect of Terminal Disclaimer on Term
Obviousness Under AIA (MPEP 2158)
Patent Term Expiration
37 CFR § 1.321(d)
Joint Research Agreements (MPEP 2156)MPEP § 2146.02
Obviousness Under AIA (MPEP 2158)MPEP § 2146.03(a)
Joint Research Agreements (MPEP 2156)MPEP § 2150
Joint Research Agreements (MPEP 2156)MPEP § 2159
Joint Research Agreements (MPEP 2156)MPEP § 717.02
Effect of Terminal Disclaimer on Term
Obviousness Under AIA (MPEP 2158)
Patent Term Expiration
MPEP § 804

Source Text from USPTO’s MPEP

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BlueIron Last Updated: 2026-01-10