1. Request for invalidation: Anyone can file a request for invalidation with the Intellectual Property Office where the patentee is located or where the patent is authorized, requesting to revoke the right of the patent.
2. filing an invalid defense: the patentee may file an invalid defense within a specified time after receiving the request for invalidation, state the reasons for the request for invalidation, or request to amend the patent claim.
3. Apply for litigation: If the request for invalidation and invalid defense cannot solve the problem, they can be solved through court proceedings.