TM=Trademark, which means "trademark" in English, is an abbreviation. R =register, which means "registered trademark" when used for trademarks. 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 trademark. Also known as the trademark, but refers to the unregistered trademark. There are two meanings: first, the logo marked with TM is used as an unregistered trademark, not the name and decoration of goods, nor advertising terms and modifiers. Its purpose is to prevent the public from using it extensively to make it a common name of goods, thus losing the distinctive features of the logo and making it impossible to register; Second, it shows that this is an unregistered trademark. Enterprises can use TM marks during the application for trademark registration and use TM marks after obtaining the exclusive right to use trademarks. 0? 3。 When an enterprise uses an unregistered trademark, it is marked with TM mark, which can be used as evidence for the enterprise to "use" the trademark; At the same time, it can also convey the message that as creators and users of trademarks, they have prior rights to the logo and do not want it to enter the public domain.