MPEP § 710.02(d) — Difference Between Shortened Statutory Periods for Reply and Specified Time Limits (Annotated Rules)

§710.02(d) Difference Between Shortened Statutory Periods for Reply and Specified Time Limits

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

This page consolidates and annotates all enforceable requirements under MPEP § 710.02(d), 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.

Difference Between Shortened Statutory Periods for Reply and Specified Time Limits

This section addresses Difference Between Shortened Statutory Periods for Reply and Specified Time Limits. Primary authority: 35 U.S.C. 133, 35 U.S.C. 133), and 37 CFR 41.37(a)). Contains: 2 guidance statements, 2 permissions, and 4 other statements.

Key Rules

Topic

Reply Period and Extensions

3 rules
StatutoryRecommendedAlways
[mpep-710-02-d-1907610cd0aedd1cfb324ef6]
Difference Between Specified Time and Shortened Statutory Period for Reply
Note:
Examiners and applicants must distinguish between a specified time for action and a shortened statutory period under 35 U.S.C. 133, with failure to reply within the latter resulting in application abandonment.
Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133:
  • (A) The penalty attaching to failure to take a particular action within a specified time is a loss of rights in regard to the particular matter (e.g., the failure to timely copy suggested claims results in a disclaimer of the involved subject matter). On the other hand, a failure to reply within the set statutory period under 35 U.S.C. 133 results in abandonment of the entire application. Abandonment of an application is not appealable, but a petition to revive may be granted if the delay was unintentional (37 CFR 1.137(a)).
  • (B) As a specified time or time limit is not a shortened statutory period under 35 U.S.C. 133, the Office may specify a time for taking action (or a time limit) of less than the 30 day minimum specified in 35 U.S.C. 133. See MPEP § 103.
  • (C) Where an applicant replies a day or two after the specified time, the delay may be excused by the examiner if satisfactorily explained. The examiner may use his or her discretion to request an explanation for the delay if the reason for the delay is not apparent from the reply. A reply 1 day late in an application carrying a shortened statutory period under 35 U.S.C. 133, no matter what the excuse, results in abandonment. Extensions of the statutory period under 35 U.S.C. 133 may be obtained under 37 CFR 1.136, provided the extension does not go beyond the 6-month statutory period from the date of the Office action (35 U.S.C. 133).
Jump to MPEP SourceReply Period and ExtensionsAbandonment – Missed DeadlineResponse to Office Action Requirements (37 CFR 1.111)
StatutoryPermittedAlways
[mpep-710-02-d-47db3d40d5903e71130f31a3]
Delay in Reply May Be Excused if Satisfactorily Explained
Note:
An examiner may excuse a delay of up to two days in an applicant's reply if the reason is satisfactorily explained.

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133:

(C) Where an applicant replies a day or two after the specified time, the delay may be excused by the examiner if satisfactorily explained.

Jump to MPEP SourceReply Period and ExtensionsResponse to Office Action Requirements (37 CFR 1.111)Shortened Statutory Period
StatutoryInformativeAlways
[mpep-710-02-d-f7af210504541d922afc310c]
Late Reply Abandonment Under Shortened Statutory Period
Note:
A reply one day late under a shortened statutory period results in abandonment, regardless of the excuse.

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133:

A reply 1 day late in an application carrying a shortened statutory period under 35 U.S.C. 133, no matter what the excuse, results in abandonment.

Jump to MPEP SourceReply Period and ExtensionsResponse to Office Action Requirements (37 CFR 1.111)Shortened Statutory Period
Topic

Abandonment – Missed Deadline

2 rules
StatutoryInformativeAlways
[mpep-710-02-d-c1cc935bf4c8b100cfb1af0d]
Failure to Timely Copy Claims Results in Disclaimer
Note:
If claims are not copied within the specified time, rights related to those claims will be lost.

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133 (A) The penalty attaching to failure to take a particular action within a specified time is a loss of rights in regard to the particular matter (e.g., the failure to timely copy suggested claims results in a disclaimer of the involved subject matter). On the other hand, a failure to reply within the set statutory period under 35 U.S.C. 133 results in abandonment of the entire application. Abandonment of an application is not appealable, but a petition to revive may be granted if the delay was unintentional (37 CFR 1.137(a)).

Jump to MPEP SourceAbandonment – Missed DeadlinePetition to Revive (37 CFR 1.137)Revival Petition Requirements
StatutoryInformativeAlways
[mpep-710-02-d-8e75c0bc2cc2c75fe1e2841e]
Failure to Reply Within Statutory Period Results in Abandonment of Application
Note:
Failing to reply within the set statutory period under 35 U.S.C. 133 leads to abandonment of the entire application, which is not appealable unless the delay was unintentional.

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133 (A) The penalty attaching to failure to take a particular action within a specified time is a loss of rights in regard to the particular matter (e.g., the failure to timely copy suggested claims results in a disclaimer of the involved subject matter). On the other hand, a failure to reply within the set statutory period under 35 U.S.C. 133 results in abandonment of the entire application. Abandonment of an application is not appealable, but a petition to revive may be granted if the delay was unintentional (37 CFR 1.137(a)).

Jump to MPEP SourceAbandonment – Missed DeadlineRevival Petition RequirementsSix Month Statutory Period
Topic

Grounds for Dismissal of Appeal

2 rules
StatutoryInformativeAlways
[mpep-710-02-d-3ee57d18d3a3ba98d0af2546]
Failure to File Appeal Brief Results in Dismissal
Note:
Missing appeal brief within the specified time results in appeal dismissal, unless there are allowed claims.

The 2-month time period for filing an appeal brief on appeal to the Patent Trial and Appeal Board (37 CFR 41.37(a)) and the 1-month time period for filing a new appeal brief to correct the deficiencies in a defective appeal brief (37 CFR 41.37(d)) are time periods, but are not (shortened) statutory periods for reply set pursuant to 35 U.S.C. 133. Thus, these periods are, unless otherwise provided, extendable by up to 5 months under 37 CFR 1.136(a), and, in an exceptional situation, further extendable under 37 CFR 1.136(b) (i.e., these periods are not statutory periods subject to the 6-month maximum set in 35 U.S.C. 133). In addition, the failure to file an appeal brief (or a new appeal brief) within the time period set in 37 CFR 41.37(a) (or (d)) results in dismissal of the appeal. The dismissal of an appeal results in abandonment, unless there is any allowed claim(s) (see MPEP § 1215.04), in which case the examiner should cancel the nonallowed claims and allow the application.

Jump to MPEP Source · 37 CFR 41.37(a))Grounds for Dismissal of AppealAppeal Withdrawal and DismissalPTAB Jurisdiction
StatutoryRecommendedAlways
[mpep-710-02-d-c19ac3e7ee33817ca0165cbe]
Appeal Dismissal Results In Abandonment Unless Allowed Claims Exist
Note:
If an appeal is dismissed, the application will be abandoned unless there are any allowed claims, in which case nonallowed claims will be canceled and the application will be allowed.

The 2-month time period for filing an appeal brief on appeal to the Patent Trial and Appeal Board (37 CFR 41.37(a)) and the 1-month time period for filing a new appeal brief to correct the deficiencies in a defective appeal brief (37 CFR 41.37(d)) are time periods, but are not (shortened) statutory periods for reply set pursuant to 35 U.S.C. 133. Thus, these periods are, unless otherwise provided, extendable by up to 5 months under 37 CFR 1.136(a), and, in an exceptional situation, further extendable under 37 CFR 1.136(b) (i.e., these periods are not statutory periods subject to the 6-month maximum set in 35 U.S.C. 133). In addition, the failure to file an appeal brief (or a new appeal brief) within the time period set in 37 CFR 41.37(a) (or (d)) results in dismissal of the appeal. The dismissal of an appeal results in abandonment, unless there is any allowed claim(s) (see MPEP § 1215.04), in which case the examiner should cancel the nonallowed claims and allow the application.

Jump to MPEP Source · 37 CFR 41.37(a))Grounds for Dismissal of AppealAppeal Withdrawal and DismissalEx Parte Appeals to PTAB
Topic

Petition to Revive (37 CFR 1.137)

1 rules
StatutoryPermittedAlways
[mpep-710-02-d-bd1455fde0d3ca03418ca891]
Unintentional Delay May Allow Petition to Revive Application
Note:
An application abandoned due to unintentional delay may be revived by filing a petition under 37 CFR 1.137(a).

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133 (A) The penalty attaching to failure to take a particular action within a specified time is a loss of rights in regard to the particular matter (e.g., the failure to timely copy suggested claims results in a disclaimer of the involved subject matter). On the other hand, a failure to reply within the set statutory period under 35 U.S.C. 133 results in abandonment of the entire application. Abandonment of an application is not appealable, but a petition to revive may be granted if the delay was unintentional (37 CFR 1.137(a)).

Jump to MPEP SourcePetition to Revive (37 CFR 1.137)Unintentional Delay StandardRevival of Abandoned Application
Topic

Shortened Statutory Period

1 rules
StatutoryPermittedAlways
[mpep-710-02-d-7b9434e6bc078e7442552d7d]
Office May Specify Time Limits Less Than 30 Days
Note:
The Office can set time limits for actions that are shorter than the minimum 30-day period required by law.

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133:

(B) As a specified time or time limit is not a shortened statutory period under 35 U.S.C. 133, the Office may specify a time for taking action (or a time limit) of less than the 30 day minimum specified in 35 U.S.C. 133. See MPEP § 103.

Jump to MPEP SourceShortened Statutory PeriodSix Month Statutory PeriodStatutory Period Computation (37 CFR 1.134)
Topic

Response to Office Action Requirements (37 CFR 1.111)

1 rules
StatutoryPermittedAlways
[mpep-710-02-d-faad83299d7185a57faba5ab]
Examiner May Request Explanation for Delayed Reply
Note:
The examiner can ask for an explanation if the reason for a reply delay is not clear from the response.

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133:

The examiner may use his or her discretion to request an explanation for the delay if the reason for the delay is not apparent from the reply.

Jump to MPEP SourceResponse to Office Action Requirements (37 CFR 1.111)Office Actions and ResponsesReply Period and Extensions
Topic

Six Month Statutory Period

1 rules
StatutoryPermittedAlways
[mpep-710-02-d-d48059fea1be20b752643842]
Extensions of Statutory Reply Period
Note:
Extensions can be obtained for the statutory reply period from the Office action, but not beyond six months.

Examiners and applicants should not lose sight of the distinction between a specified time for a particular action and a shortened statutory period for reply under 35 U.S.C. 133:

Extensions of the statutory period under 35 U.S.C. 133 may be obtained under 37 CFR 1.136, provided the extension does not go beyond the 6-month statutory period from the date of the Office action (35 U.S.C. 133).

Jump to MPEP SourceSix Month Statutory PeriodOffice Actions and ResponsesStatutory Period Computation (37 CFR 1.134)
Topic

PTAB Jurisdiction

1 rules
StatutoryInformativeAlways
[mpep-710-02-d-fde0683d7ad5971a5b538d44]
Appeal Brief Time Periods Not Statutory Reply Periods
Note:
The 2-month appeal brief and 1-month correction periods are not statutory reply periods, allowing up to 5 months extension under certain conditions.

The 2-month time period for filing an appeal brief on appeal to the Patent Trial and Appeal Board (37 CFR 41.37(a)) and the 1-month time period for filing a new appeal brief to correct the deficiencies in a defective appeal brief (37 CFR 41.37(d)) are time periods, but are not (shortened) statutory periods for reply set pursuant to 35 U.S.C. 133. Thus, these periods are, unless otherwise provided, extendable by up to 5 months under 37 CFR 1.136(a), and, in an exceptional situation, further extendable under 37 CFR 1.136(b) (i.e., these periods are not statutory periods subject to the 6-month maximum set in 35 U.S.C. 133). In addition, the failure to file an appeal brief (or a new appeal brief) within the time period set in 37 CFR 41.37(a) (or (d)) results in dismissal of the appeal. The dismissal of an appeal results in abandonment, unless there is any allowed claim(s) (see MPEP § 1215.04), in which case the examiner should cancel the nonallowed claims and allow the application.

Jump to MPEP Source · 37 CFR 41.37(a))PTAB JurisdictionEx Parte Appeals to PTABPTAB Contested Case Procedures
Topic

Period Computation Rules

1 rules
StatutoryPermittedAlways
[mpep-710-02-d-4e9d5799d8718189bb6a9371]
Extensions Permitted for Missing Parts Notice Reply
Note:
Extensions of up to 5 months under 37 CFR 1.136(a) and additional time under 37 CFR 1.136(b) are permitted for responses to Notices to File Missing Parts of an Application, as the 2-month period is not a statutory period subject to 35 U.S.C. 133.

The 2-month time period for reply to A Notice to File Missing Parts of an Application is not identified on the Notice as a statutory period subject to 35 U.S.C. 133. Thus, extensions of time of up to 5 months under 37 CFR 1.136(a), followed by additional time under 37 CFR 1.136(b), when appropriate, are permitted.

Jump to MPEP Source · 37 CFR 1.136(a)Period Computation RulesSix Month Statutory PeriodStatutory Period Computation (37 CFR 1.134)

Citations

Primary topicCitation
Abandonment – Missed Deadline
Grounds for Dismissal of Appeal
PTAB Jurisdiction
Period Computation Rules
Petition to Revive (37 CFR 1.137)
Reply Period and Extensions
Response to Office Action Requirements (37 CFR 1.111)
Shortened Statutory Period
Six Month Statutory Period
35 U.S.C. § 133
Reply Period and Extensions
Response to Office Action Requirements (37 CFR 1.111)
Six Month Statutory Period
37 CFR § 1.136
Grounds for Dismissal of Appeal
PTAB Jurisdiction
Period Computation Rules
37 CFR § 1.136(a)
Grounds for Dismissal of Appeal
PTAB Jurisdiction
Period Computation Rules
37 CFR § 1.136(b)
Abandonment – Missed Deadline
Petition to Revive (37 CFR 1.137)
Reply Period and Extensions
37 CFR § 1.137(a)
Grounds for Dismissal of Appeal
PTAB Jurisdiction
37 CFR § 41.37(a)
Grounds for Dismissal of Appeal
PTAB Jurisdiction
37 CFR § 41.37(d)
Reply Period and Extensions
Shortened Statutory Period
MPEP § 103
Grounds for Dismissal of Appeal
PTAB Jurisdiction
MPEP § 1215.04

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