[Code of Federal Regulations] [Title 37, Volume 1] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 37CFR10.35] [Page 355] TITLE 37--PATENTS, TRADEMARKS, AND COPYRIGHTS DEPARTMENT OF COMMERCE PART 10--REPRESENTATION OF OTHERS BEFORE THE PATENT AND TRADEMARK OFFICE--Table of Contents Sec. 10.35 Firm names and letterheads. (a) A practitioner shall not use a firm name, letterhead, or other professional designation that violates Sec. 10.31. A trade name may be used by a practitioner in private practice if it does not imply a current connection with a government agency or with a public or charitable legal services organization and is not otherwise in violation of Sec. 10.31. (b) Practitioners may state or imply that they practice in a partnership or other organization only when that is the fact.