2. The solution is:
1) The patent will expire in about eight months, and the cost is about 20,000 yuan. 8 months before the patent expires, it still can't be sold on Alibaba and Taobao, and it has to bear certain economic losses.
2) Seek patent legal defense; If it can be solved in time, we should find a professional lawyer to deal with it. We can help recommend several lawyers.
3) negotiate with the other party to obtain a patent license from the other party and pay a certain patent license fee;
3. Recommendations:
Apply for patent protection in time for the patents developed by oneself, and pay attention to intellectual property protection.