TM is the abbreviation of English trademark. TM means a trademark under application. The purpose is to tell others that this trademark has been submitted for registration. After submitting a trademark application and the Trademark Office issues a trademark acceptance notice, you can use the TM logo on the trademark. The TM trademark is not protected by law.

The abbreviation of register in English, R stands for registered trademark, which is the legal mark of registered trademark and is protected by law. The R mark can only be used after successful trademark registration