R is the abbreviation of REGISTER, which means registered trademark when used on a trademark. The circle R is the mark of "registered trademark", which means that the trademark has been registered in the State Trademark Office and has been examined and approved by the Trademark Office to become a registered trademark.

ii. characteristics of r trademark

R trademark has the characteristics of exclusivity, exclusivity and uniqueness, which belongs to the owner of the registered trademark and is protected by law. No enterprise or individual may use it without the permission or authorization of the owner of the registered trademark, otherwise it will bear tort liability.