39 CFR §221.7
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
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.