At present, he has not been sued for infringement because your patent has not been authorized yet. But you can send him a lawyer's letter asking him to stop production or sales. After your patent is granted, if he is still producing or selling, you can sue him for infringement and demand compensation. Note: Before you sue him, you need to determine: 1. Whether his product infringes your patent rights, and whether the technical features fully fall within your claims; 2. Whether your patent rights are stable, and it is impossible for the other party to invalidate yours. patent. 3. If the other party’s infringement evidence is collected, it will be directly related to the later amount of compensation.