MPEP § 1207 — Examiner’s Answer (Annotated Rules)

§1207 Examiner’s Answer

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

This page consolidates and annotates all enforceable requirements under MPEP § 1207, 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.

Examiner’s Answer

This section addresses Examiner’s Answer. Primary authority: 37 CFR 41.39, 37 CFR 1.136(a), and 37 CFR 1.136(b). Contains: 4 requirements, 1 prohibition, 1 permission, and 5 other statements.

Key Rules

Topic

New Ground of Rejection in Answer

4 rules
StatutoryPermittedAlways
[mpep-1207-7158fb1f6cf86c4f01b93833]
Examiner May Include New Rejection Grounds in Answer
Note:
An examiner can include new grounds for rejection in their answer to an appeal brief, provided they obtain approval from the Director.

(a) Content of examiner's answer. The primary examiner may, within such time as may be directed by the Director, furnish a written answer to the appeal brief.

(2) An examiner's answer may include a new ground of rejection.

Jump to MPEP Source · 37 CFR 41.39New Ground of Rejection in AnswerNew Grounds of RejectionExaminer's Answer
StatutoryRequiredAlways
[mpep-1207-dd6f3b0bb4e7f7b817a8ebaf]
Examiner Must Obtain Director Approval for New Grounds in Answer
Note:
The examiner needs the Director's approval to include new grounds of rejection in their answer to an appeal brief.

(a) Content of examiner's answer. The primary examiner may, within such time as may be directed by the Director, furnish a written answer to the appeal brief.

The examiner must obtain the approval of the Director to furnish an answer that includes a new ground of rejection.

Jump to MPEP Source · 37 CFR 41.39New Ground of Rejection in AnswerNew Grounds of RejectionRejection of Claims
StatutoryRequiredAlways
[mpep-1207-d3b6c30ec2f9eb9bf504851e]
Evidence Must Relate to New Ground of Rejection
Note:
When responding to a new ground of rejection, any submitted evidence must be relevant to the specific new grounds presented by the examiner.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection (1) Reopen prosecution. Request that prosecution be reopened before the primary examiner by filing a reply under § 1.111 of this title with or without amendment or submission of affidavits (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence. Any amendment or submission of affidavits or other Evidence must be relevant to the new ground of rejection. A request that complies with this paragraph will be entered and the application or the patent under ex parte reexamination will be reconsidered by the examiner under the provisions of § 1.112 of this title. Any request that prosecution be reopened under this paragraph will be treated as a request to withdraw the appeal.

Jump to MPEP Source · 37 CFR 41.39New Ground of Rejection in AnswerExaminer Sustained – Amendment OptionsExaminer's Answer
StatutoryRequiredAlways
[mpep-1207-256f59dbc07b7c914e4bf7ea]
Address New Rejections in Reply Brief
Note:
When an examiner introduces new grounds of rejection, a reply brief must address these rejections and comply with other briefing requirements.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection:

Such a reply brief must address as set forth in § 41.37(c)(1)(iv) each new ground of rejection and should follow the other requirements of a brief as set forth in § 41.37(c).

Jump to MPEP Source · 37 CFR 41.39New Ground of Rejection in AnswerReply Brief FilingAppeal Brief Requirements
Topic

Ex Parte Reexamination

3 rules
StatutoryInformativeAlways
[mpep-1207-5ad65665dda557d0fbde11e6]
Request to Reopen Prosecution Before Primary Examiner
Note:
A request to reopen prosecution before the primary examiner must comply with §1.112 and will be entered if it addresses a new ground of rejection, allowing reconsideration by the examiner.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection (1) Reopen prosecution. Request that prosecution be reopened before the primary examiner by filing a reply under § 1.111 of this title with or without amendment or submission of affidavits (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence. Any amendment or submission of affidavits or other Evidence must be relevant to the new ground of rejection. A request that complies with this paragraph will be entered and the application or the patent under ex parte reexamination will be reconsidered by the examiner under the provisions of § 1.112 of this title. Any request that prosecution be reopened under this paragraph will be treated as a request to withdraw the appeal.

Jump to MPEP Source · 37 CFR 41.39Ex Parte ReexaminationExaminer's AnswerGrounds for Dismissal of Appeal
StatutoryInformativeAlways
[mpep-1207-79f7e97b661fc61712dc66c0]
No Time Extensions for Examiner’s Answer Period
Note:
Extensions of time under § 1.136(a) do not apply to the period set for responding to an examiner's answer in ex parte reexamination proceedings.

(c) Extensions of time. Extensions of time under § 1.136(a) of this title for patent applications are not applicable to the time period set forth in this section. See § 1.136(b) of this title for extensions of time to reply for patent applications and § 1.550(c) of this title for extensions of time to reply for ex parte reexamination proceedings.

Jump to MPEP Source · 37 CFR 1.136(a)Ex Parte Reexamination
StatutoryInformativeAlways
[mpep-1207-1369c9fb21e30acc0a4cd2b8]
No § 1.136(a) Time Extensions for Examiner's Answer Periods
Note:
Extensions of time under § 1.136(a) are not applicable to the time periods set forth in this section for examiner’s answers, with alternatives provided in § 1.136(b) and § 1.550(c).

(c) Extensions of time. Extensions of time under § 1.136(a) of this title for patent applications are not applicable to the time period set forth in this section. See § 1.136(b) of this title for extensions of time to reply for patent applications and § 1.550(c) of this title for extensions of time to reply for ex parte reexamination proceedings.

Jump to MPEP Source · 37 CFR 1.136(a)Ex Parte Reexamination
Topic

Reply Brief Filing

3 rules
StatutoryInformativeAlways
[mpep-1207-76aa9876b02f06f90a27845b]
Maintain Appeal Through Reply Brief
Note:
To maintain an appeal when a new ground of rejection is introduced, the appellant must file a reply brief addressing each new rejection within two months.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection:

Request that the appeal be maintained by filing a reply brief as set forth in § 41.41.

Jump to MPEP Source · 37 CFR 41.39Reply Brief FilingAppeal Brief RequirementsReply Brief and Forwarding
StatutoryProhibitedAlways
[mpep-1207-18a7bb41666743d19f077013]
No Amendments with Reply Brief
Note:
A reply brief must not be accompanied by any amendments, affidavits, or other evidence when responding to a new ground of rejection.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection:

A reply brief may not be accompanied by any amendment, affidavit (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence.

Jump to MPEP Source · 37 CFR 41.39Reply Brief FilingAppeal Brief RequirementsReply Brief and Forwarding
StatutoryRequiredAlways
[mpep-1207-5981b67cf89f3553b93b62c9]
No Amendments with Reply Brief
Note:
A reply brief filed in response to a new ground of rejection must not include any amendments, affidavits, or other evidence; otherwise, it will be treated as a request for reopening prosecution.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection:

If a reply brief filed pursuant to this section is accompanied by any amendment, affidavit or other Evidence, it shall be treated as a request that prosecution be reopened before the primary examiner under paragraph (b)(1) of this section.

Jump to MPEP Source · 37 CFR 41.39Reply Brief FilingAppeal Brief RequirementsReply Brief and Forwarding
Topic

Examiner Signature Authority

2 rules
StatutoryPermittedAlways
[mpep-1207-6f59e333db5ac3974a17fdb4]
Examiner Must Provide Written Response to Appeal Brief
Note:
The primary examiner must provide a written answer to the appeal brief within the time directed by the Director, incorporating all grounds of rejection from the original office action unless explicitly withdrawn.
(a) Content of examiner's answer. The primary examiner may, within such time as may be directed by the Director, furnish a written answer to the appeal brief.
  • (1) An examiner's answer is deemed to incorporate all of the grounds of rejection set forth in the Office action from which the appeal is taken (as modified by any advisory action and pre-appeal brief conference decision), unless the examiner's answer expressly indicates that a ground of rejection has been withdrawn.
  • (2) An examiner's answer may include a new ground of rejection. For purposes of the examiner's answer, any rejection that relies upon any Evidence not relied upon in the Office action from which the appeal is taken (as modified by any advisory action) shall be designated by the primary examiner as a new ground of rejection. The examiner must obtain the approval of the Director to furnish an answer that includes a new ground of rejection.
Jump to MPEP Source · 37 CFR 41.39Examiner Signature AuthorityExaminer's Answer ContentSigning and Review of Actions
StatutoryRequiredAlways
[mpep-1207-fc9c6496a40254550770acc0]
Designate New Evidence as Separate Rejection
Note:
The primary examiner must label any rejection based on new evidence not previously cited in the Office action as a separate ground of rejection.

(a) Content of examiner's answer. The primary examiner may, within such time as may be directed by the Director, furnish a written answer to the appeal brief.

For purposes of the examiner's answer, any rejection that relies upon any Evidence not relied upon in the Office action from which the appeal is taken (as modified by any advisory action) shall be designated by the primary examiner as a new ground of rejection.

Jump to MPEP Source · 37 CFR 41.39Examiner Signature AuthorityNew Ground of Rejection in AnswerSigning and Review of Actions
Topic

Examiner Sustained – Amendment Options

2 rules
StatutoryInformativeAlways
[mpep-1207-ae075cd6bc90c5aec74a24c8]
Option to Reopen Prosecution for New Grounds of Rejection
Note:
Appellants may choose to reopen prosecution within two months if a new ground of rejection is introduced, by filing a reply with or without amendments or affidavits relevant to the new rejection.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection (1) Reopen prosecution. Request that prosecution be reopened before the primary examiner by filing a reply under § 1.111 of this title with or without amendment or submission of affidavits (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence. Any amendment or submission of affidavits or other Evidence must be relevant to the new ground of rejection. A request that complies with this paragraph will be entered and the application or the patent under ex parte reexamination will be reconsidered by the examiner under the provisions of § 1.112 of this title. Any request that prosecution be reopened under this paragraph will be treated as a request to withdraw the appeal.

Jump to MPEP Source · 37 CFR 41.39Examiner Sustained – Amendment OptionsReopening Prosecution After AppealProcedure After Board Decision
StatutoryInformativeAlways
[mpep-1207-f0bbaf0070c7dcd476e72ca3]
Option to Reopen Prosecution for New Grounds of Rejection
Note:
Appellants may request the reopening of prosecution before the primary examiner by filing a reply under §1.111, with or without amendments and affidavits, when faced with new grounds of rejection in an examiner’s answer.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection (1) Reopen prosecution. Request that prosecution be reopened before the primary examiner by filing a reply under § 1.111 of this title with or without amendment or submission of affidavits (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence. Any amendment or submission of affidavits or other Evidence must be relevant to the new ground of rejection. A request that complies with this paragraph will be entered and the application or the patent under ex parte reexamination will be reconsidered by the examiner under the provisions of § 1.112 of this title. Any request that prosecution be reopened under this paragraph will be treated as a request to withdraw the appeal.

Jump to MPEP Source · 37 CFR 41.39Examiner Sustained – Amendment OptionsExaminer's AnswerGrounds for Dismissal of Appeal
Topic

Ex Parte Appeals to PTAB

2 rules
StatutoryInformativeAlways
[mpep-1207-15e320c64cef7a5d89db1680]
Maintaining Appeal Against New Rejection Grounds
Note:
To maintain an appeal against new grounds of rejection, the appellant must file a reply brief within two months addressing each new ground of rejection without accompanying amendments or affidavits.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection:

(2) Maintain appeal.

Jump to MPEP Source · 37 CFR 41.39Ex Parte Appeals to PTABExaminer's AnswerAppeal Brief Timing
StatutoryPermittedAlways
[mpep-1207-5a7439c74e8610d8d227d9d7]
Permitted Examiner Actions Post-Appeal Consideration
Note:
After an appeal brief is filed and the examiner has reviewed it, they may reopen prosecution with supervisor approval to enter a new rejection, allow the application if rejections are overcome, or maintain the appeal by drafting an answer.
After an appeal brief under 37 CFR 41.37 has been filed and the examiner has considered the issues on appeal, the examiner may:
  • (A) reopen prosecution to enter a new ground of rejection with approval from the supervisory patent examiner (see MPEP § 1207.04);
  • (B) allow the application if the examiner determines that the rejections have been overcome and no new ground of rejection is appropriate; or
  • (C) maintain the appeal by conducting an appeal conference (MPEP § 1207.01) and drafting an examiner’s answer (MPEP § 1207.02).
Jump to MPEP Source · 37 CFR 41.37Ex Parte Appeals to PTABExaminer's AnswerNew Ground of Rejection in Answer
Topic

Examiner's Answer Content

1 rules
StatutoryInformativeAlways
[mpep-1207-39831bb9708918180dbdbc85]
Incorporation of Rejection Grounds in Examiner’s Answer
Note:
The examiner's answer to an appeal brief must include all grounds of rejection from the original Office action, unless a specific ground is explicitly withdrawn.

(a) Content of examiner's answer. The primary examiner may, within such time as may be directed by the Director, furnish a written answer to the appeal brief. (1) An examiner's answer is deemed to incorporate all of the grounds of rejection set forth in the Office action from which the appeal is taken (as modified by any advisory action and pre-appeal brief conference decision), unless the examiner's answer expressly indicates that a ground of rejection has been withdrawn.

Jump to MPEP Source · 37 CFR 41.39Examiner's Answer ContentAppeal ConferenceExaminer's Answer
Topic

Appeal Brief Timing

1 rules
StatutoryRequiredAlways
[mpep-1207-37f392f9e7b358f2643b0a60]
Respond to New Rejection Grounds Within Two Months
Note:
When an examiner's answer includes a new rejection ground, the appellant must respond within two months by either reopening prosecution or maintaining the appeal.
(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection:
  • (1) Reopen prosecution. Request that prosecution be reopened before the primary examiner by filing a reply under § 1.111 of this title with or without amendment or submission of affidavits (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence. Any amendment or submission of affidavits or other Evidence must be relevant to the new ground of rejection. A request that complies with this paragraph will be entered and the application or the patent under ex parte reexamination will be reconsidered by the examiner under the provisions of § 1.112 of this title. Any request that prosecution be reopened under this paragraph will be treated as a request to withdraw the appeal.
  • (2) Maintain appeal. Request that the appeal be maintained by filing a reply brief as set forth in § 41.41. Such a reply brief must address as set forth in § 41.37(c)(1)(iv) each new ground of rejection and should follow the other requirements of a brief as set forth in § 41.37(c). A reply brief may not be accompanied by any amendment, affidavit (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence. If a reply brief filed pursuant to this section is accompanied by any amendment, affidavit or other Evidence, it shall be treated as a request that prosecution be reopened before the primary examiner under paragraph (b)(1) of this section.
Jump to MPEP Source · 37 CFR 41.39Appeal Brief TimingGrounds for Dismissal of AppealNew Ground of Rejection in Answer
Topic

Voluntary Withdrawal of Appeal

1 rules
StatutoryInformativeAlways
[mpep-1207-faa11f445098aaaebe55db56]
Request to Reopen Prosecution Treats as Appeal Withdrawal
Note:
A request to reopen prosecution in response to a new ground of rejection is treated as a withdrawal of the appeal.

(b) Appellant's response to new ground of rejection. If an examiner’s answer contains a rejection designated as a new ground of rejection, appellant must within two months from the date of the examiner’s answer exercise one of the following two options to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection (1) Reopen prosecution. Request that prosecution be reopened before the primary examiner by filing a reply under § 1.111 of this title with or without amendment or submission of affidavits (§§ 1.130, 1.131 or 1.132 of this of this title) or other Evidence. Any amendment or submission of affidavits or other Evidence must be relevant to the new ground of rejection. A request that complies with this paragraph will be entered and the application or the patent under ex parte reexamination will be reconsidered by the examiner under the provisions of § 1.112 of this title. Any request that prosecution be reopened under this paragraph will be treated as a request to withdraw the appeal.

Jump to MPEP Source · 37 CFR 41.39Voluntary Withdrawal of AppealExaminer Sustained – Amendment OptionsAppeals in Reexamination

Citations

Primary topicCitation
Appeal Brief Timing
Ex Parte Reexamination
Examiner Sustained – Amendment Options
New Ground of Rejection in Answer
Voluntary Withdrawal of Appeal
37 CFR § 1.111
Appeal Brief Timing
Ex Parte Reexamination
Examiner Sustained – Amendment Options
New Ground of Rejection in Answer
Voluntary Withdrawal of Appeal
37 CFR § 1.112
Appeal Brief Timing
Ex Parte Appeals to PTAB
Ex Parte Reexamination
Examiner Sustained – Amendment Options
New Ground of Rejection in Answer
Reply Brief Filing
Voluntary Withdrawal of Appeal
37 CFR § 1.130
Ex Parte Reexamination37 CFR § 1.136(a)
Ex Parte Reexamination37 CFR § 1.136(b)
Ex Parte Reexamination37 CFR § 1.550(c)
Ex Parte Appeals to PTAB37 CFR § 41.37
Appeal Brief Timing
Ex Parte Appeals to PTAB
New Ground of Rejection in Answer
Reply Brief Filing
37 CFR § 41.37(c)
Appeal Brief Timing
Ex Parte Appeals to PTAB
New Ground of Rejection in Answer
Reply Brief Filing
37 CFR § 41.37(c)(1)(iv)
Appeal Brief Timing
Ex Parte Appeals to PTAB
New Ground of Rejection in Answer
Reply Brief Filing
37 CFR § 41.41
Ex Parte Appeals to PTABMPEP § 1207.01
Ex Parte Appeals to PTABMPEP § 1207.02
Ex Parte Appeals to PTABMPEP § 1207.04

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