The main function of trademarks is to distinguish the source and quality of different enterprises or commodities. Trademarks need to be unique so that consumers can easily identify and distinguish different goods or services. Unique trademarks can shape the brand image, increase the competitiveness of enterprises and obtain legal protection. In the process of trademark registration, the Trademark Office will evaluate the uniqueness of the trademark. The Trademark Office will consult the existing trademark database to determine whether there are any trademarks that are similar or similar to the trademarks to be registered. If the trademark is too common, lacks uniqueness, or is too similar to the existing trademark, it will be considered as not meeting the registration requirements and will be refused registration.