The TM mark indicates that the trademark has been applied to the National Trademark Office, and the National Trademark Office has also issued a "Notice of Acceptance" and entered the opposition period, which can prevent others from filing duplicate claims. Application also means that existing trademark holders have priority to use it. TM means the trademark symbol, that is, the words, graphics or symbols marked with TM are trademarks, but they are not necessarily registered (unregistered ones are not protected by law). TM is the abbreviation of English trademark.