MPEP § 2265 — Extension of Time (Annotated Rules)

§2265 Extension of Time

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

This page consolidates and annotates all enforceable requirements under MPEP § 2265, 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.

Extension of Time

This section addresses Extension of Time. Primary authority: 35 U.S.C. 41, 37 CFR 1.136(a), and 37 CFR 1.136. Contains: 2 requirements, 1 permission, and 4 other statements.

Key Rules

Topic

Ex Parte Reexamination

6 rules
StatutoryInformativeAlways
[mpep-2265-4051aa1e15f2bce7b5b0ebb8]
Extensions Not Allowed In Ex Parte Reexamination
Note:
The provisions of 37 CFR 1.136(a) and (b) do not apply to ex parte reexamination proceedings as they involve no application or applicant.

The provisions of 37 CFR 1.136(a) and (b) are NOT applicable to ex parte reexamination proceedings under any circumstances. Public Law 97-247 amended 35 U.S.C. 41 to authorize the Director to provide for extensions of time to take action in an “application.” An ex parte reexamination proceeding does not involve an “application.” 37 CFR 1.136 authorizes extensions of the time period only in an application in which an applicant must respond or take action. There is neither an “application,” nor an “applicant” involved in a reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.136(a)Ex Parte Reexamination
StatutoryInformativeAlways
[mpep-2265-6b2fee8b92d996240061bc2c]
Extensions Not Allowed In Ex Parte Reexaminations
Note:
The Director cannot provide extensions of time for actions in ex parte reexamination proceedings.

The provisions of 37 CFR 1.136(a) and (b) are NOT applicable to ex parte reexamination proceedings under any circumstances. Public Law 97-247 amended 35 U.S.C. 41 to authorize the Director to provide for extensions of time to take action in an “application.” An ex parte reexamination proceeding does not involve an “application.” 37 CFR 1.136 authorizes extensions of the time period only in an application in which an applicant must respond or take action. There is neither an “application,” nor an “applicant” involved in a reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.136(a)Ex Parte Reexamination
StatutoryInformativeAlways
[mpep-2265-227f81c9f96f56dc58a45519]
Ex Parte Reexamination Does Not Involve Application
Note:
An ex parte reexamination proceeding does not involve an application or applicant, and therefore provisions for extensions of time in applications do not apply.

The provisions of 37 CFR 1.136(a) and (b) are NOT applicable to ex parte reexamination proceedings under any circumstances. Public Law 97-247 amended 35 U.S.C. 41 to authorize the Director to provide for extensions of time to take action in an “application.” An ex parte reexamination proceeding does not involve an “application.” 37 CFR 1.136 authorizes extensions of the time period only in an application in which an applicant must respond or take action. There is neither an “application,” nor an “applicant” involved in a reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.136(a)Ex Parte Reexamination
StatutoryRequiredAlways
[mpep-2265-f0d038b9b8a838b510328354]
Extensions Not Allowed In Ex Parte Reexaminations
Note:
The rule states that extensions of time are not authorized for ex parte reexamination proceedings.

The provisions of 37 CFR 1.136(a) and (b) are NOT applicable to ex parte reexamination proceedings under any circumstances. Public Law 97-247 amended 35 U.S.C. 41 to authorize the Director to provide for extensions of time to take action in an “application.” An ex parte reexamination proceeding does not involve an “application.” 37 CFR 1.136 authorizes extensions of the time period only in an application in which an applicant must respond or take action. There is neither an “application,” nor an “applicant” involved in a reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.136(a)Ex Parte Reexamination
StatutoryInformativeAlways
[mpep-2265-1f2a0b4700fb162f197d62f0]
No Application or Applicant in Ex Parte Reexamination
Note:
This rule states that ex parte reexamination proceedings do not involve an application or an applicant, and therefore provisions for extensions of time under 37 CFR 1.136 are not applicable.

The provisions of 37 CFR 1.136(a) and (b) are NOT applicable to ex parte reexamination proceedings under any circumstances. Public Law 97-247 amended 35 U.S.C. 41 to authorize the Director to provide for extensions of time to take action in an “application.” An ex parte reexamination proceeding does not involve an “application.” 37 CFR 1.136 authorizes extensions of the time period only in an application in which an applicant must respond or take action. There is neither an “application,” nor an “applicant” involved in a reexamination proceeding.

Jump to MPEP Source · 37 CFR 1.136(a)Ex Parte Reexamination
StatutoryPermittedAlways
[mpep-2265-8d487edd43c597bc1cc970d3]
Notification of Time Extension for Reexamination Parties
Note:
Form paragraph 22.04.01 is used to inform parties in a reexamination proceeding about the extension of time practice.

Form paragraph 22.04.01 may be used to notify the parties in a reexamination proceeding the extension of time practice in reexamination.

Jump to MPEP Source · 37 CFR 1.550Ex Parte Reexamination
Topic

Processing Fees

1 rules
StatutoryRequiredAlways
[mpep-2265-512fe3fbb3dd143b9527358d]
Request for Extension of Time Must Specify Period and Fee
Note:
A request for an extension in ex parte reexamination must specify the period requested and include the required fee.

An extension of time in an ex parte reexamination proceeding is requested pursuant to 37 CFR 1.550(c) which provides that any request for such an extension must specify the requested period of extension and be accompanied by the fee set forth in 37 CFR 1.17(g).

Jump to MPEP Source · 37 CFR 1.550(c)Processing FeesFee RequirementsEx Parte Reexamination

Citations

Primary topicCitation
Ex Parte Reexamination35 U.S.C. § 41
Ex Parte Reexamination37 CFR § 1.136
Ex Parte Reexamination37 CFR § 1.136(a)
Processing Fees37 CFR § 1.17(g)
Processing Fees37 CFR § 1.550(c)
Ex Parte ReexaminationForm Paragraph § 22.04.01

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