The determination of trademark similarity should be based on the shape, sound, meaning and overall expression of the trademark itself, based on the general attention of the relevant public, using isolated comparison, overall comparison and comparison of essential parts. A combined method is used to determine whether the trademark marks themselves are identical or similar. Isolated comparison means that when determining whether trademarks are similar, the trademarks cannot be placed side by side for comparison, but can only be compared separately in an isolated state. However, when reviewing trademarks, the comparison can only be direct and non-isolated. Therefore, during the review, the isolated observation should simulate the scene of consumers purchasing goods and services as much as possible. Overall comparison means that two trademarks should be compared as a whole, and parts cannot be used to replace the overall judgment. Comparison of essential parts refers to the comparison of the prominently identifiable parts of the trademark. The general attention of the relevant public can be understood as the attention exerted on the goods or services by consumers with ordinary knowledge and experience when purchasing goods or receiving services.