TM is two acronyms for English trademarks. Generally, both unregistered trademarks and registered trademarks are acceptable. Of course, registered trademarks can also be used. It is generally believed that its significance lies in publicity. My use behavior belongs to "use as a trademark", which can be used as trademark use evidence in some trademark cases.
R: It refers to a registered trademark, which means that the trademark has been registered successfully.
The Trademark Law clearly stipulates that "a trademark registrant has the right to indicate a' registered trademark' or a registration mark?" What about a trademark marked as not approved for registration? If so, it is a counterfeit registered trademark, which may constitute trademark infringement.
: indicates a sign protected by copyright.
It is a sign of copyright, and universal copyright convention requires publications to be marked with a copyright sign before they can enjoy copyright. There is no such provision in China, and it is generally only a description of "all rights reserved" and "all rights reserved, plagiarism will be investigated".