What is a trademark registration number?

A trademark registration number is the number the trademark office gives to the trademark upon issuance of the trademark registration certificate. A trademark registration number is a unique identification number assigned to a registered trademark by the government agency responsible for granting trademark rights in a particular jurisdiction. For example, in the United States, the U.S. Patent and Trademark Office (USPTO) assigns a registration number to every trademark that is approved for registration. The registration number serves as an identifier for the trademark and distinguishes it from other registered trademarks.