(a) IN GENERAL.-A post-grant review instituted under this chapter shall be terminated with respect to any petitioner upon the joint request of the petitioner and the patent owner, unless the Office has decided the merits of the proceeding before the request for termination is filed. If the post-grant review is terminated with respect to a petitioner under this section, no estoppel under section 325(e) shall attach to the petitioner, or to the real party in interest or privy of the petitioner, on

(a)Board role. The parties may agree to settle any issue in a proceeding, but the Board is not a party to the settlement and may independently determine any question of jurisdiction, patentability, or Office practice. (b)Agreements in writing. Any agreement or understanding between the parties made in connection with, or in contemplation of, the termination of a proceeding shall be in writing and a true copy shall be filed with the Board before the termination of the trial. (c)Request to keep separate

The Board may terminate a trial without rendering a final written decision, where appropriate, including where the trial is consolidated with another proceeding or pursuant to a joint request under 35 U.S.C. 317(a) or 327(a) . 37 C.F.R. §42.72