TM is the abbreviation of English trademark, which translates into business mark, that is, trademark. That is, words, graphics or symbols marked with TM are trademarks, but they may not be registered (unregistered ones are not protected by law). In China, TM on trademarks also has its special meaning, and its TM logo does not protect trademarks. Unlike R, TM means that the trademark has been applied to the State Trademark Office, and it also means that the trademark has been applied first in the process of examination. China adopts the principle of prior application.