TM=Trademark, which means "trademark" in English, is an abbreviation. R =register, used in trademarks means "registered trademark". Trademarks are divided into unregistered trademarks and registered trademarks. Registered trademarks are protected by national laws and are generally marked with R; unregistered trademarks are generally not protected by law and are generally marked with TM. TM is the abbreviation of TRADE MARK, which means commercial mark. It is also generally called a trademark, but it refers to an unregistered trademark. It has two meanings: First, the logo marked by TM is used as an unregistered trademark, not the name of the product or the decoration of the product, nor is it an advertising term or modifier. Its purpose is to prevent the public from using it extensively and turning it into a common name for a certain product, thereby losing the distinctive features of the logo and making it impossible to register; secondly, it means that it is an unregistered trademark. Enterprises can use the TM mark during the submission of trademark registration applications and switch to ?0?3 after obtaining the exclusive right to trademark. When an enterprise uses an unregistered trademark, it can be evidence of the enterprise's "use" of the trademark by marking the TM mark; it can also convey the message that as the creator and user of the trademark, it has prior rights to the trademark and does not want it to be used. into the public domain.