1. The parties file an invalid application with the Registration and Trademark Office within the statutory time limit;

2. After receiving the application, the Trademark Office decides to accept and review it according to law;

3. If the Trademark Office considers that it meets the requirements after examination, it shall make an invalid decision.

legal ground

Article 44 of the Trademark Law of People's Republic of China (PRC)

Where a registered trademark violates the provisions of Article 4, Article 10, Article 11, Article 12 and Paragraph 4 of Article 19 of this Law, or is registered by deception or other improper means, the Trademark Office shall declare the registered trademark invalid; Other units or individuals may request the Trademark Review and Adjudication Board to declare the registered trademark invalid.

When the Trademark Office decides to declare a registered trademark invalid, it shall notify the parties concerned in writing. If a party refuses to accept the decision of the Trademark Office, he may apply to the Trademark Review and Adjudication Board for reexamination within 15 days from the date of receiving the notice. The Trademark Review and Adjudication Board shall make a decision within nine months from the date of receiving the application and notify the parties in writing. 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. If a party refuses to accept the decision of the Trademark Review and Adjudication Board, he may bring a suit in a people's court within 30 days from the date of receiving the notice.