37 C.F.R. § 1.197 : Patents, Trademarks, and Copyrights — UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE — GENERAL — RULES OF PRACTICE IN PATENT CASES — NATIONAL PROCESSING PROVISIONS —APPEAL TO THE PATENT TRIAL AND APPEAL BOARD — Termination of proceedings

(a) Proceedings on an application are considered terminated by the dismissal of an appeal or the failure to timely file an appeal to the court or a civil action except:
(1) Where claims stand allowed in an application; or
(2) Where the nature of the decision requires further action by the examiner.
(b) The date of termination of proceedings on an application is the date on which the appeal is dismissed or the date on which the time for appeal to the U.S. Court of Appeals for the Federal Circuit or review by civil action (§90.3 of this chapter) expires in the absence of further appeal or review. If an appeal to the U.S. Court of Appeals for the Federal Circuit or a civil action has been filed, proceedings on an application are considered terminated when the appeal or civil action is terminated. A civil action is terminated when the time to appeal the judgment expires. An appeal to the U.S. Court of Appeals for the Federal Circuit, whether from a decision of the Board or a judgment in a civil action, is terminated when the mandate is issued by the Court.

37 C.F.R. §1.197

78 FR 75252, 12/11/2013