Legal basis: Article 10 of the Measures for the Administration of Patent Priority Examination, if China National Intellectual Property Administration agrees to the priority examination, it shall close the case within the following time limit from the date of consent: the application for a patent for invention shall be closed within 1 year after the first notice of examination opinions is issued within 45 days; The application for a patent for utility model and design shall be closed within 2 months; Under special circumstances, if the applicant's reply is overtime or the case is complicated, the closing time will be affected.