You can prepare some evidence to prove that you have developed patented technology, find the local intellectual property office or the intermediate people's court, and take legal protection to safeguard your rights. Evidence has two directions, one is that you have the right here, and the other is that the other party has no right. If the other party doesn't participate in research and development, don't give people, don't give goods and don't give funds, you have a good chance of winning.