Whether a patent is infringed is mainly determined based on the following aspects: 1. The patent right must be valid, and invalid patent rights are not protected by law; 2. There must be an illegal act; 3. The perpetrator’s subjective It is a knowing and intentional infringement or a negligent infringement; 4. The purpose of the infringement is for production and operation; 5. The perpetrator has not obtained the permission of the patentee, including express and implied. For infringement, the patentee can request handling from the relevant departments or file a lawsuit in court.