TM means 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 repeated applications. , also means that the existing trademark holder has 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.