1. The trademark owner submits a written application;
2. The trademark has a certain popularity and continuous use time, and has a record of being protected as a well-known trademark, as well as other standards stipulated by law for being recognized as a well-known trademark.
legal ground
Article 14 of the Trademark Law of People's Republic of China (PRC)
Well-known trademarks shall be recognized as facts that need to be recognized in handling trademark cases at the request of the parties concerned. The following factors shall be considered when identifying well-known trademarks:
(a) the public's awareness 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.