[Code of Federal Regulations] [Title 39, Volume 1] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 39CFR221.9] [Page 38] TITLE 39--POSTAL SERVICE CHAPTER I--UNITED STATES POSTAL SERVICE PART 221--GENERAL PRINCIPLES OF ORGANIZATION--Table of Contents Sec. 221.9 Postal Service emblem. The Postal Service emblem, which is identical with the seal, is registered as a trademark and service mark by the U.S. Patent Office. Except for the emblem on official stationery, the emblem must bear one of the following notations: ``Reg. U.S. Pat. Off.'', ``Registered in U.S. Patent Office'', or the letter R enclosed within a circle. [59 FR 18454, Apr. 18, 1994]