Legal analysis: The patent right restoration fee is the fee paid by the applicant or patentee to request the restoration of the right. Its payment deadline is within two months from the date the party receives the notice of loss of rights issued by the Patent Office. If payment is not made within the prescribed period or in full, the rights will not be restored.
Legal basis: "Patent Law of the People's Republic of China" Article 44 If any of the following circumstances occurs, the patent right shall be terminated before the expiration of the term: (1) Failure to pay annual fees in accordance with regulations (2) The patentee has given up its patent rights in a written statement. If the patent right is terminated before the expiration of the term, it shall be registered and announced by the patent administration department of the State Council.