---
kind: "section"
citation: "37 C.F.R. § 41.10"
title: "37"
number: "41.10"
heading: "Correspondence addresses."
url: "https://uscodex.org/cfr/37/41.10"
---

# §41.10. Correspondence addresses.


Except as the Board may otherwise direct,

- (a) **Appeals.** Correspondence in an application or a patent involved in an appeal (subparts [B](/cfr/37/subpartB.md) and [C](/cfr/37/subpartC.md) 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: Patent Trial and Appeal Board, 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)](/cfr/37/1.1.md?p=a-1-i) of this title.
- (b) **Interferences.** Mailed correspondence in interference ([subpart D](/cfr/37/subpartD.md) of this part) shall be sent to Mail Stop INTERFERENCE, Patent Trial and Appeal Board, United States Patent and Trademark Office, PO Box 1450, Alexandria, Virginia 22313-1450.
- (c) **Trial Proceedings.** Correspondence in trial proceedings ([part 42 of this title](/cfr/37/part42.md)) are governed by [§ 42.6(b)](/cfr/37/42.6.md?p=b) of this title.

## Notes

### Amendments

[77 FR 46630, Aug. 6, 2012]

### Authority

Authority: 35 U.S.C. 2(b)(2), 3(a)(2)(A), 21, 23, 32, 41, 134, 135, and Public Law 112-29.

### Source

Source: 69 FR 50003, Aug. 12, 2004, unless otherwise noted.

### Amendments

[77 FR 46630, Aug. 6, 2012]