Legal analysis: No rights means that there is currently no patent right and no patent protection. There are 4 situations that lead to lack of rights: 1. The patent office finds that the application is not qualified for authorization and the application is rejected; 2. The patent right is granted after review by the patent office, but is later invalidated; 3. The patent right is granted after review by the patent office, but later The applicant fails to pay the annual fee, or declares to give up the rights; 4. The Patent Office grants the patent right after review. The protection period of the invention patent is 20 years, and the utility model patent protection period is 10 years, which has exceeded the corresponding period.
Legal basis: "Patent Law of the People's Republic of China" Article 46 The patent administration department of the State Council shall promptly review and make a decision on a request to declare the patent right invalid, and notify the requester and the patentee rights holder. The decision to declare the patent right invalid shall be registered and announced by the Patent Administration Department of the State Council