1. tag "?" And "registered trademark" are all based on the trademark law. Only trademarks approved by the Trademark Office can be used. The specific use method is generally the upper right corner or the lower right corner of the trademark. It should be noted that trademarks registered without approval are absolutely not allowed to be marked.

2. Those marked with "trademark" and "trademark" may be registered trademarks or unregistered trademarks. Whether the registration is successful or not can be inquired in official website of the Trademark Office.

On the r tag and TM tag:

——? Refers to a registered trademark. The Trademark Law clearly stipulates that "a trademark registrant has the right to indicate a' registered trademark' or a registration mark?" There is no registered trademark, what should I do if I mark it? If so, it is a counterfeit registered trademark, which may constitute trademark infringement;

——? It is two acronyms of English trademark, which also refers to trademark, but it has no legal significance and legal effect. Generally, both unregistered trademarks and registered trademarks are acceptable. Of course, registered trademarks can also be used. Generally speaking, we think what he means is to publicize my use behavior as a trademark, which can be used as trademark use evidence in some trademark cases. It can be noted that online platforms such as Taobao and Tmall divide trademarks into R mark and TM mark, which refer to registered trademarks and trademarks in application respectively (only unauthorized rights are accepted);

——? 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, generally speaking, it is "all rights reserved"; "All rights reserved, plagiarism will be investigated" and so on.