1, search for patents. First of all, before applying for a patent, you should search the relevant information of the patent to avoid infringement.
2. Seriously reply to the invalid request. Secondly, the patentee should carefully read and understand the relevant technology, understand the reasons for invalidation, put forward rebuttal opinions, prepare defense statements, and request the Patent Office to reject the request for invalidation.
3. Principal-agent. Finally, some enterprises and universities will entrust patents to professional intellectual property institutions for maintenance to ensure the validity of patents and the settlement of disputes.