37 C.F.R. § 41.10 Correspondence addresses.
Title 37 - Patents, Trademarks, and Copyrights
Except as the Board may otherwise direct, (a) Appeals. Correspondence in an application or a patent involved in an appeal (subparts B and C of this part) during the period beginning when an appeal docketing notice is issued and ending when a decision has been rendered by the Board, as well as any request for rehearing of a decision by the Board, shall be mailed to: Board of Patent Appeals and Interferences, United States Patent and Trademark Office, PO Box 1450, Alexandria, Virginia 22313–1450. Notices of appeal, appeal briefs, reply briefs, requests for oral hearing, as well as all other correspondence in an application or a patent involved in an appeal to the Board for which an address is not otherwise specified, should be addressed as set out in §1.1(a)(1)(i) of this title. (b) Contested cases. Mailed correspondence in contested cases (subpart D of this part) shall be sent to Mail Stop INTERFERENCE, Board of Patent Appeals and Interferences, United States Patent and Trademark Office, PO Box 1450, Alexandria, Virginia 22313–1450.
Title 37: Patents, Trademarks, and Copyrights
PART 41—PRACTICE BEFORE THE BOARD OF PATENT APPEALS AND INTERFERENCES
Subpart A—General Provisions
§ 41.10 Correspondence addresses.
