1. In addition to using words and graphics that are the same as or similar to others' trademarks, see if other explanatory words are added to show its explanatory nature;

2. Whether the trademark is significant;

3. Judge according to business practices and opinions of trade associations;

4. other methods.

Legal basis

Article 48 of the Trademark Law of the People's Republic of China

The use of trademarks mentioned in this law refers to the use of trademarks in commodities, commodity packages or containers and commodity trading documents, or in advertising, exhibitions and other commercial activities to identify the source of commodities.

Article 49

Where a trademark registrant changes the registered trademark, the registrant's name, address or other registered items by himself in the process of using the registered trademark, the local administrative department for industry and commerce shall order it to make corrections within a time limit; If it fails to make corrections within the time limit, its registered trademark shall be revoked by the Trademark Office.

if a registered trademark becomes the common name of the goods approved for use by it, or it is not used for three consecutive years without justifiable reasons, any unit or individual may apply to the Trademark Office for cancellation of the registered trademark. The Trademark Office shall make a decision within nine months from the date of receiving the application. There are special circumstances that need to be extended, which can be extended for three months with the approval of the administrative department for industry and commerce of the State Council.