1. Relevant public's understanding of the trademark; 2. The term of use of the trademark; 3. The duration, degree and geographical scope of any publicity work of the trademark; 4. The record that the trademark is protected as a well-known trademark; 5. Other factors that make the trademark famous.

To apply for the recognition of a well-known trademark, the following supporting documents shall be provided:

1. Relevant materials proving the public's knowledge of the trademark; 2. Relevant materials proving the service life of the trademark, including the history and scope of the use and registration of the trademark; 3. Relevant materials to prove the duration, degree and geographical scope of any publicity work of the trademark, including the way of advertising and promotion activities, geographical scope, type of publicity media, advertising volume and other relevant materials; 4. Relevant materials that prove that the trademark is protected as a well-known trademark, including relevant materials that the trademark is protected as a well-known trademark in China or other countries and regions; 5. Other evidential materials to prove that the trademark is well-known, including the output, sales volume, sales revenue, profits and taxes, sales area and other related materials of the main commodities that used the trademark in recent three years.

well-known trademark