Article 9 of the "Trademark Law" stipulates that when using a registered trademark, the trademark registrant has the right to indicate "registered trademark" or registered mark. The so-called registered mark refers to a mark that works together with a registered trademark to indicate that the trademark has been registered. According to relevant regulations, there are two trademark registration marks in my country. One is the circled word "note", which is the abbreviation of "registration" in Chinese; the other is the circled "R" letter, which is the prefix of the word "Registration" in English. The latter mark is universal worldwide. The purpose of indicating that a registered trademark has been registered when used is to inform the public that the trademark is protected by law and to warn others not to misuse it and cause infringement. It should be noted that only registered trademarks can use registered marks. If an unregistered trademark uses a registered mark, it will constitute passing off a registered trademark, and the user will be punished. So what should you do if you don’t want others to mistake your unregistered trademark for your product name or decoration? There are no express provisions in the law in this regard, but according to some international practices, using the "TM" mark is a relatively simple method. The letters "TM" are the abbreviation of "TRADEMARK" (trademark) in English, so when people see "TM", they know that the words or graphics marked by it are used as trademarks, not the names of goods.