MPEP § 1207.03 — New Ground of Rejection in Examiner’s Answer (Annotated Rules)

§1207.03 New Ground of Rejection in Examiner’s Answer

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

This page consolidates and annotates all enforceable requirements under MPEP § 1207.03, 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.

New Ground of Rejection in Examiner’s Answer

This section addresses New Ground of Rejection in Examiner’s Answer. Primary authority: 37 CFR 41.39(a)(2), 37 CFR 41.39, and 37 CFR 41.39(b). Contains: 4 requirements, 1 guidance statement, 2 permissions, and 7 other statements.

Key Rules

Topic

Ex Parte Appeals to PTAB

6 rules
StatutoryRecommendedAlways
[mpep-1207-03-73cd337b4ec15b72e26d5a1f]
Examiner May Apply New Rejection in Appeal Brief
Note:
The examiner can apply a new ground of rejection during the preparation of an appeal brief, but must obtain supervisory approval to reopen prosecution.

At the time of preparing the answer to an appeal brief, the examiner may decide that they should apply a new ground of rejection against some or all of the pending claims. In such an instance where a new ground of rejection is necessary, the examiner should either reopen prosecution or set forth the new ground of rejection in the answer. The examiner must obtain supervisory approval in order to reopen prosecution after an appeal. See MPEP §§ 1002.02(d) and 1207.04.

Jump to MPEP SourceEx Parte Appeals to PTABExaminer Sustained – Amendment OptionsReopening Prosecution After Appeal
StatutoryRequiredAlways
[mpep-1207-03-29b28dd716f2ac9d81f63a75]
Examiner Must Approve New Grounds for Appeal
Note:
An examiner must obtain approval from a TC Director before adding new grounds of rejection and must prominently identify them in the appeal document.
Any new ground of rejection made by an examiner in an answer must be:
  • (A) approved by a Technology Center (TC) Director or designee; and
  • (B) prominently identified in the "Grounds of Rejection to be Reviewed on Appeal" section under the subheading "New Grounds of Rejection" of the answer (see MPEP § 1207.02). The examiner may use form paragraph 12.256.
Jump to MPEP SourceEx Parte Appeals to PTAB
StatutoryInformativeAlways
[mpep-1207-03-875e27879ad2efa4d9c30177]
New Grounds of Rejection Must Be Prominently Identified
Note:
Any new ground of rejection made by an examiner in an answer must be clearly stated under the 'Grounds of Rejection to be Reviewed on Appeal' section.

Any new ground of rejection made by an examiner in an answer must be:

(B) prominently identified in the "Grounds of Rejection to be Reviewed on Appeal" section under the subheading "New Grounds of Rejection" of the answer (see MPEP § 1207.02).

Jump to MPEP SourceEx Parte Appeals to PTAB
StatutoryPermittedAlways
[mpep-1207-03-53328e0fcee71c02f01ee75f]
New Grounds of Rejection Must Be Prominently Identified
Note:
Examiners must clearly identify any new grounds of rejection in their answers.

Any new ground of rejection made by an examiner in an answer must be:

The examiner may use form paragraph 12.256.

Jump to MPEP SourceEx Parte Appeals to PTAB
StatutoryInformativeAlways
[mpep-1207-03-6120b25cd0d65c8c2d316626]
Evidence Requirement for Ex Parte Appeals to PTAB
Note:
The rule outlines what constitutes evidence in ex parte appeals to the Patent Trial and Appeal Board.

See 37 CFR 41.30 and MPEP § 1204.04 for a detailed discussion of what constitutes "evidence" for the purposes of appeal.

Jump to MPEP Source · 37 CFR 41.30Ex Parte Appeals to PTAB
MPEP GuidanceRequiredAlways
[mpep-1207-03-359e091ac1e411fd639deea2]
Two-Month Reply Period for Appellant After Examiner’s Answer
Note:
Appellant must be given a two-month period to reply after the examiner's answer, which may include new grounds of rejection.
The examiner’s answer must provide appellant a two-month time period for reply. The examiner may use form paragraph 12.279.01 to notify appellant of the period for reply and to include the approval of the TC Director or designee. In response to an examiner’s answer that contains a new ground of rejection, appellant must either file:
  • (A) a reply in compliance with 37 CFR 1.111 to request that prosecution be reopened; or
  • (B) a reply brief that addresses each new ground of rejection in compliance with 37 CFR 41.37(c)(1)(iv) to maintain the appeal.
Jump to MPEP SourceEx Parte Appeals to PTABReply Brief FilingReply Brief and Forwarding
Topic

Signature Requirements

4 rules
StatutoryInformativeAlways
[mpep-1207-03-bb08bd09db59b84fd9760c2b]
New Ground of Rejection Must Be Approved by Director
Note:
An examiner’s answer may include a new ground of rejection, but it must be approved by the Technology Center (TC) Director or their designee.

37 CFR 41.39(a)(2) permits the entry of a new ground of rejection in an examiner’s answer. 37 CFR 41.39 further specifies that new grounds of rejection must be approved by the Director – i.e., the Director of the USPTO. This authority has been delegated to the Technology Center (TC) Directors or their designee(s). The answer must also include the signature of a Technology Center (TC) Director or designee to indicate that he or she approves the new ground of rejection.

Jump to MPEP Source · 37 CFR 41.39(a)(2)Signature Requirements
StatutoryRequiredAlways
[mpep-1207-03-a9b5636bbe130a6c5815a4aa]
New Ground of Rejection Must Be Approved by Director
Note:
A new ground of rejection in an examiner’s answer must be approved by the USPTO Director or a Technology Center Director.

37 CFR 41.39(a)(2) permits the entry of a new ground of rejection in an examiner’s answer. 37 CFR 41.39 further specifies that new grounds of rejection must be approved by the Director – i.e., the Director of the USPTO. This authority has been delegated to the Technology Center (TC) Directors or their designee(s). The answer must also include the signature of a Technology Center (TC) Director or designee to indicate that he or she approves the new ground of rejection.

Jump to MPEP Source · 37 CFR 41.39(a)(2)Signature Requirements
StatutoryInformativeAlways
[mpep-1207-03-cb89dbb8bdae5d9751c6a9ec]
Approval by TC Director Required for New Ground of Rejection
Note:
The Technology Center (TC) Director or their designee must approve any new ground of rejection in an examiner’s answer.

37 CFR 41.39(a)(2) permits the entry of a new ground of rejection in an examiner’s answer. 37 CFR 41.39 further specifies that new grounds of rejection must be approved by the Director – i.e., the Director of the USPTO. This authority has been delegated to the Technology Center (TC) Directors or their designee(s). The answer must also include the signature of a Technology Center (TC) Director or designee to indicate that he or she approves the new ground of rejection.

Jump to MPEP Source · 37 CFR 41.39(a)(2)Signature Requirements
StatutoryRequiredAlways
[mpep-1207-03-2978149f9f3f979e8286f59d]
TC Director Must Approve New Ground of Rejection
Note:
The rule requires the signature of a Technology Center (TC) Director or designee to approve any new ground of rejection in an examiner’s answer.

37 CFR 41.39(a)(2) permits the entry of a new ground of rejection in an examiner’s answer. 37 CFR 41.39 further specifies that new grounds of rejection must be approved by the Director – i.e., the Director of the USPTO. This authority has been delegated to the Technology Center (TC) Directors or their designee(s). The answer must also include the signature of a Technology Center (TC) Director or designee to indicate that he or she approves the new ground of rejection.

Jump to MPEP Source · 37 CFR 41.39(a)(2)Signature Requirements
Topic

New Grounds of Rejection

4 rules
StatutoryInformativeAlways
[mpep-1207-03-74bccece71c7bedbf9995d25]
New Rationale for Same Rejection Not Allowed
Note:
An examiner cannot introduce a new rationale that fundamentally changes the rejection even if using different language.

A position or rationale that changes the "basic thrust of the rejection" will also give rise to a new ground of rejection. In re Kronig, 539 F.2d 1300, 1303, 190 USPQ 425, 427 (CCPA 1976). A rejection relying on the same statutory basis and same prior art references, may nevertheless raise a new ground of rejection, when the rejection relies on new facts or rationales not previously raised. See In re Leithem, 661 F.3d 1316, 100 USPQ2d 1155 (Fed. Cir. 2011); Rambus v. Rea, 731 F.3d 1248, 108 USPQ2d 1400 (Fed. Cir. 2013) (the inclusion of a new motivation to combine prior art references did not merely elaborate on the examiner’s findings with “more detail”). However, the examiner need not use identical language in both the examiner’s answer and the Office action from which the appeal is taken to avoid triggering a new ground of rejection. It is not a new ground of rejection, for example, if the examiner’s answer responds to appellant’s arguments using different language, or restates the reasoning of the rejection in a different way, so long as the "basic thrust of the rejection" is the same. In re Kronig, 539 F.2d at 1303, 190 USPQ at 427; see also In re Jung, 637 F.3d 1356, 1364–65, 98 USPQ2d 1174, 1180 (Fed. Cir. 2001) (additional explanation responding to arguments offered for the first time "did not change the rejection" and appellant had fair opportunity to respond); In re Noznick, 391 F.2d 946, 949, 157 USPQ 266, 269 (CCPA 1968) (no new ground of rejection made when "explaining to appellants why their arguments were ineffective to overcome the rejection made by the examiner"); In re Krammes, 314 F.2d 813, 817, 137 USPQ 60, 63 (CCPA 1963) ("It is well established that mere difference in form of expression of the reasons for finding claims unpatentable or unobvious over the references does not amount to reliance on a different ground of rejection." (citations omitted)); In re Cowles, 156 F.2d 551, 555, 70 USPQ 419, 422 (CCPA 1946) (holding that the use of "different language" does not necessarily trigger a new ground of rejection).

Jump to MPEP SourceNew Grounds of RejectionRejection of ClaimsRejection on Prior Art
StatutoryPermittedAlways
[mpep-1207-03-825ea851fbd26c2ff8b02fc7]
New Facts or Rationales Require New Rejection
Note:
A rejection relying on new facts or rationales not previously raised, even if based on the same statutory basis and prior art references, constitutes a new ground of rejection.

A position or rationale that changes the "basic thrust of the rejection" will also give rise to a new ground of rejection. In re Kronig, 539 F.2d 1300, 1303, 190 USPQ 425, 427 (CCPA 1976). A rejection relying on the same statutory basis and same prior art references, may nevertheless raise a new ground of rejection, when the rejection relies on new facts or rationales not previously raised. See In re Leithem, 661 F.3d 1316, 100 USPQ2d 1155 (Fed. Cir. 2011); Rambus v. Rea, 731 F.3d 1248, 108 USPQ2d 1400 (Fed. Cir. 2013) (the inclusion of a new motivation to combine prior art references did not merely elaborate on the examiner’s findings with “more detail”). However, the examiner need not use identical language in both the examiner’s answer and the Office action from which the appeal is taken to avoid triggering a new ground of rejection. It is not a new ground of rejection, for example, if the examiner’s answer responds to appellant’s arguments using different language, or restates the reasoning of the rejection in a different way, so long as the "basic thrust of the rejection" is the same. In re Kronig, 539 F.2d at 1303, 190 USPQ at 427; see also In re Jung, 637 F.3d 1356, 1364–65, 98 USPQ2d 1174, 1180 (Fed. Cir. 2001) (additional explanation responding to arguments offered for the first time "did not change the rejection" and appellant had fair opportunity to respond); In re Noznick, 391 F.2d 946, 949, 157 USPQ 266, 269 (CCPA 1968) (no new ground of rejection made when "explaining to appellants why their arguments were ineffective to overcome the rejection made by the examiner"); In re Krammes, 314 F.2d 813, 817, 137 USPQ 60, 63 (CCPA 1963) ("It is well established that mere difference in form of expression of the reasons for finding claims unpatentable or unobvious over the references does not amount to reliance on a different ground of rejection." (citations omitted)); In re Cowles, 156 F.2d 551, 555, 70 USPQ 419, 422 (CCPA 1946) (holding that the use of "different language" does not necessarily trigger a new ground of rejection).

Jump to MPEP SourceNew Grounds of RejectionRejection on Prior ArtRejection of Claims
StatutoryInformativeAlways
[mpep-1207-03-0a0863e501cbfe89644f8b1c]
Examiner's Answer May Restate Rejection Differently Without New Grounds
Note:
The examiner can respond to arguments using different language without creating a new ground of rejection as long as the basic thrust remains the same.

A position or rationale that changes the "basic thrust of the rejection" will also give rise to a new ground of rejection. In re Kronig, 539 F.2d 1300, 1303, 190 USPQ 425, 427 (CCPA 1976). A rejection relying on the same statutory basis and same prior art references, may nevertheless raise a new ground of rejection, when the rejection relies on new facts or rationales not previously raised. See In re Leithem, 661 F.3d 1316, 100 USPQ2d 1155 (Fed. Cir. 2011); Rambus v. Rea, 731 F.3d 1248, 108 USPQ2d 1400 (Fed. Cir. 2013) (the inclusion of a new motivation to combine prior art references did not merely elaborate on the examiner’s findings with “more detail”). However, the examiner need not use identical language in both the examiner’s answer and the Office action from which the appeal is taken to avoid triggering a new ground of rejection. It is not a new ground of rejection, for example, if the examiner’s answer responds to appellant’s arguments using different language, or restates the reasoning of the rejection in a different way, so long as the "basic thrust of the rejection" is the same. In re Kronig, 539 F.2d at 1303, 190 USPQ at 427; see also In re Jung, 637 F.3d 1356, 1364–65, 98 USPQ2d 1174, 1180 (Fed. Cir. 2001) (additional explanation responding to arguments offered for the first time "did not change the rejection" and appellant had fair opportunity to respond); In re Noznick, 391 F.2d 946, 949, 157 USPQ 266, 269 (CCPA 1968) (no new ground of rejection made when "explaining to appellants why their arguments were ineffective to overcome the rejection made by the examiner"); In re Krammes, 314 F.2d 813, 817, 137 USPQ 60, 63 (CCPA 1963) ("It is well established that mere difference in form of expression of the reasons for finding claims unpatentable or unobvious over the references does not amount to reliance on a different ground of rejection." (citations omitted)); In re Cowles, 156 F.2d 551, 555, 70 USPQ 419, 422 (CCPA 1946) (holding that the use of "different language" does not necessarily trigger a new ground of rejection).

Jump to MPEP SourceNew Grounds of RejectionRejection on Prior ArtRejection vs. Objection
StatutoryInformativeAlways
[mpep-1207-03-e87f6be2ba367d004d4debd5]
Use of Different Language Does Not Trigger New Ground of Rejection
Note:
The use of different language in an examiner’s answer does not create a new ground of rejection if the basic thrust remains the same.

A position or rationale that changes the "basic thrust of the rejection" will also give rise to a new ground of rejection. In re Kronig, 539 F.2d 1300, 1303, 190 USPQ 425, 427 (CCPA 1976). A rejection relying on the same statutory basis and same prior art references, may nevertheless raise a new ground of rejection, when the rejection relies on new facts or rationales not previously raised. See In re Leithem, 661 F.3d 1316, 100 USPQ2d 1155 (Fed. Cir. 2011); Rambus v. Rea, 731 F.3d 1248, 108 USPQ2d 1400 (Fed. Cir. 2013) (the inclusion of a new motivation to combine prior art references did not merely elaborate on the examiner’s findings with “more detail”). However, the examiner need not use identical language in both the examiner’s answer and the Office action from which the appeal is taken to avoid triggering a new ground of rejection. It is not a new ground of rejection, for example, if the examiner’s answer responds to appellant’s arguments using different language, or restates the reasoning of the rejection in a different way, so long as the "basic thrust of the rejection" is the same. In re Kronig, 539 F.2d at 1303, 190 USPQ at 427; see also In re Jung, 637 F.3d 1356, 1364–65, 98 USPQ2d 1174, 1180 (Fed. Cir. 2001) (additional explanation responding to arguments offered for the first time "did not change the rejection" and appellant had fair opportunity to respond); In re Noznick, 391 F.2d 946, 949, 157 USPQ 266, 269 (CCPA 1968) (no new ground of rejection made when "explaining to appellants why their arguments were ineffective to overcome the rejection made by the examiner"); In re Krammes, 314 F.2d 813, 817, 137 USPQ 60, 63 (CCPA 1963) ("It is well established that mere difference in form of expression of the reasons for finding claims unpatentable or unobvious over the references does not amount to reliance on a different ground of rejection." (citations omitted)); In re Cowles, 156 F.2d 551, 555, 70 USPQ 419, 422 (CCPA 1946) (holding that the use of "different language" does not necessarily trigger a new ground of rejection).

Jump to MPEP SourceNew Grounds of RejectionRejection of ClaimsRejection on Prior Art
Topic

Prior Art

3 rules
StatutoryInformativeAlways
[mpep-1207-03-db0036a73af4ad1d8ef8db24]
New Prior Art Reference Requires New Ground of Rejection
Note:
If a new prior art reference is cited for the first time in an examiner’s answer, it must be included as a new ground of rejection.

If Evidence (such as a new prior art reference, but not including a newly relied upon dictionary definition) is applied or cited for the first time in an examiner’s answer, then 37 CFR 41.39(a)(2) requires that the rejection be designated as a new ground of rejection. If the citation of a new prior art reference is necessary to support a rejection, it must be included in the statement of rejection, which would be considered to introduce a new ground of rejection. Even if the prior art reference is cited to support the rejection in a minor capacity, it should be positively included in the statement of rejection and be designated as a new ground of rejection. In re Hoch, 428 F.2d 1341, 1342 n.3, 166 USPQ 406, 407 n.3 (CCPA 1970). See MPEP § 2144.03 for guidance on the citation of a new reference to support Official Notice taken in Office actions made prior to an examiner’s answer.

StatutoryRequiredAlways
[mpep-1207-03-cd8963801aef16414528b31d]
New Ground of Rejection for New Prior Art
Note:
If a new prior art reference is cited to support a rejection, it must be included in the statement and designated as a new ground of rejection.

If Evidence (such as a new prior art reference, but not including a newly relied upon dictionary definition) is applied or cited for the first time in an examiner’s answer, then 37 CFR 41.39(a)(2) requires that the rejection be designated as a new ground of rejection. If the citation of a new prior art reference is necessary to support a rejection, it must be included in the statement of rejection, which would be considered to introduce a new ground of rejection. Even if the prior art reference is cited to support the rejection in a minor capacity, it should be positively included in the statement of rejection and be designated as a new ground of rejection. In re Hoch, 428 F.2d 1341, 1342 n.3, 166 USPQ 406, 407 n.3 (CCPA 1970). See MPEP § 2144.03 for guidance on the citation of a new reference to support Official Notice taken in Office actions made prior to an examiner’s answer.

StatutoryRecommendedAlways
[mpep-1207-03-2431b39a4faa8182a4ddc720]
New Ground of Rejection for Minor Prior Art Citation
Note:
If a prior art reference is cited in a minor capacity, it must be included in the statement of rejection and designated as a new ground of rejection.

If Evidence (such as a new prior art reference, but not including a newly relied upon dictionary definition) is applied or cited for the first time in an examiner’s answer, then 37 CFR 41.39(a)(2) requires that the rejection be designated as a new ground of rejection. If the citation of a new prior art reference is necessary to support a rejection, it must be included in the statement of rejection, which would be considered to introduce a new ground of rejection. Even if the prior art reference is cited to support the rejection in a minor capacity, it should be positively included in the statement of rejection and be designated as a new ground of rejection. In re Hoch, 428 F.2d 1341, 1342 n.3, 166 USPQ 406, 407 n.3 (CCPA 1970). See MPEP § 2144.03 for guidance on the citation of a new reference to support Official Notice taken in Office actions made prior to an examiner’s answer.

Topic

Examiner Sustained – Amendment Options

2 rules
StatutoryRecommendedAlways
[mpep-1207-03-e126f7fdcdad2b5b87763b0c]
Examiner Must Set Forth New Ground in Answer
Note:
The examiner must either reopen prosecution or include a new ground of rejection in the response to an appeal brief.

At the time of preparing the answer to an appeal brief, the examiner may decide that they should apply a new ground of rejection against some or all of the pending claims. In such an instance where a new ground of rejection is necessary, the examiner should either reopen prosecution or set forth the new ground of rejection in the answer. The examiner must obtain supervisory approval in order to reopen prosecution after an appeal. See MPEP §§ 1002.02(d) and 1207.04.

Jump to MPEP SourceExaminer Sustained – Amendment OptionsReopening Prosecution After AppealProcedure After Board Decision
StatutoryRequiredAlways
[mpep-1207-03-ba349f22017a84c3947b0453]
Examiner Must Get Supervisory OK to Reopen After Appeal
Note:
The examiner must obtain supervisory approval before reopening prosecution after an appeal where a new ground of rejection is needed.

At the time of preparing the answer to an appeal brief, the examiner may decide that they should apply a new ground of rejection against some or all of the pending claims. In such an instance where a new ground of rejection is necessary, the examiner should either reopen prosecution or set forth the new ground of rejection in the answer. The examiner must obtain supervisory approval in order to reopen prosecution after an appeal. See MPEP §§ 1002.02(d) and 1207.04.

Jump to MPEP SourceExaminer Sustained – Amendment OptionsReopening Prosecution After AppealProcedure After Board Decision
Topic

Appeal Brief Timing

1 rules
StatutoryRequiredAlways
[mpep-1207-03-a8dd0a9e1abc0b81d1725f16]
Appellant Must File Reply Within Two Months
Note:
An appellant must file a reply brief within two months from the examiner’s answer to avoid automatic dismissal of the appeal for claims subject to new grounds of rejection.

Appellant must file the reply or reply brief within two months from the date of the examiner’s answer to avoid sua sponte dismissal of the appeal as to the claims subject to the new ground of rejection. See 37 CFR 41.39(b) and subsection “V. APPELLANT’S REPLY TO NEW GROUNDS OF REJECTION” below.

Jump to MPEP Source · 37 CFR 41.39(b)Appeal Brief TimingGrounds for Dismissal of AppealExaminer's Answer Content

Citations

Primary topicCitation
Ex Parte Appeals to PTAB37 CFR § 1.111
Ex Parte Appeals to PTAB37 CFR § 41.30
Ex Parte Appeals to PTAB37 CFR § 41.37(c)(1)(iv)
Signature Requirements37 CFR § 41.39
Prior Art
Signature Requirements
37 CFR § 41.39(a)(2)
Appeal Brief Timing37 CFR § 41.39(b)
Ex Parte Appeals to PTAB
Examiner Sustained – Amendment Options
MPEP § 1002.02(d)
Ex Parte Appeals to PTABMPEP § 1204.04
Ex Parte Appeals to PTABMPEP § 1207.02
MPEP § 1207.04
Prior ArtMPEP § 2144.03
Ex Parte Appeals to PTABForm Paragraph § 12.256
Ex Parte Appeals to PTABForm Paragraph § 12.279.01
New Grounds of RejectionIn re Cowles, 156 F.2d 551, 555, 70 USPQ 419, 422 (CCPA 1946)
New Grounds of RejectionIn re Krammes, 314 F.2d 813, 817, 137 USPQ 60, 63 (CCPA 1963)
New Grounds of RejectionIn re Kronig, 539 F.2d 1300, 1303, 190 USPQ 425, 427 (CCPA 1976)
New Grounds of RejectionIn re Leithem, 661 F.3d 1316, 100 USPQ2d 1155 (Fed. Cir. 2011)
New Grounds of RejectionIn re Noznick, 391 F.2d 946, 949, 157 USPQ 266, 269 (CCPA 1968)
New Grounds of RejectionRambus v. Rea, 731 F.3d 1248, 108 USPQ2d 1400 (Fed. Cir. 2013)

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