What is that circle? ? refers to a registered trademark. The "Trademark Law" clearly stipulates that "the trademark registrant has the right to indicate "registered trademark" or registered mark?". If a trademark that has not been approved for registration is marked with ?, it will be a counterfeit registered trademark, and may constitute trademark infringement.

There are also two other common symbols on trademarks:

1. ——? are the two abbreviations of English trademark, and they also refer to trademarks, but there is no legal basis for this. Meaning and legal effect. Generally, unregistered trademarks and registered trademarks can be used. Of course, registered trademarks can also be used. It is generally believed that its meaning is to disclose to the outside world, and its use is "used as a trademark". It can be used as evidence of trademark use in some trademark cases;

2.——? is a copyright mark. The Universal Copyright Convention requires that the copyright mark must be marked on publications to enjoy copyright. Our country does not have such regulations. Generally, it is just a statement such as "Copyright"; "Copyright will be punished if copied".