What is the time limit for filing a reply brief in a patent appeal?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-27 10 Rules 4 Related FAQs This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice. According to MPEP 1208 , an appellant may file a single reply brief “within the later of two months from the date of either the examiner’s answer, or a decision refusing to grant a petition under 37 CFR 1.181 to designate a new ground of rejection in an examiner’s answer.” The MPEP states: “Under 37 CFR 41.41(a)(1) , appellant may file a single reply brief as a matter of right within the later of two months from the date of either the examiner’s answer, or a decision refusing to grant a petition under 37 CFR 1.181 to designate a new ground of rejection in an examiner’s answer.” Extensions of time may be granted under certain circumstances, but are not permitted under 37 CFR 1.136(a). Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Single Reply Brief Within Two Months MPEP 1208 Single Reply Brief Within Two Months MPEP 1208 Permitted Petition Required for New Ground of Rejection Designation MPEP 1208 Required Timing for Filing Reply Brief After Petition MPEP 1208 Two-Month Time Limit for Petition Reply MPEP 1208 Required Requirement for Reply Brief After Examiner's Answer MPEP 1208 Required Two-Month Reply Brief Period After Petition Denial MPEP 1208 Permitted Procedure for New Ground of Rejection by Board MPEP 1214.06 Prohibited New Ground of Rejection Must Comply with MPEP §1207.03 MPEP 1207.05 Required Appellant Must File Reply Brief Within Two Months MPEP 1208 Required Other Related FAQs 4 FAQs Collapse What happens after a reply brief is filed in a patent appeal? Can new evidence be submitted in a reply brief during a patent appeal? How does filing a reply brief with an amendment affect a patent appeal? When is a reply brief required in a patent appeal?