legal ground
Article 48 of the Trademark Law of People's Republic of China (PRC)
The use of trademarks as mentioned in this Law refers to the use of trademarks on commodities, commodity packages or containers, commodity trading documents, or in commercial activities such as advertisements and exhibitions 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.
Any unit or individual may apply to the Trademark Office for the cancellation of a registered trademark if it becomes the common name of a commodity approved for use or if it is not used for three consecutive years without justifiable reasons. 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.