TM is the abbreviation of TRADEMARK. American trademarks are usually marked with TM, which does not necessarily refer to a registered trademark. R is the abbreviation of REGISTER. When used in trademarks, it means registered trademark. my country's Trademark Law Implementation Regulations stipulate that when using a registered trademark, you can indicate "registered trademark" or registered mark on the goods, product packaging, instructions or other attachments. . Registration marks include (note plus ○) and (R plus ○). When using a registered mark, it should be marked on the upper right corner or lower right corner of the trademark.