2. After entering the inquiry system, read and agree with relevant statements. Enter the patent name for information inquiry. At this time, you can see the authorization status of the patent and know whether the patent has been withdrawn or expired. If there are two announcement numbers, it means that the patent has been authorized.
3. When inquiring about the patent acceptance number, be sure to write clearly the acceptance number. You can also fill in the application number and related date, as long as the format is correct, you can find the relevant content.
Legal basis: People's Republic of China (PRC) Patent Law.
Article 22 An invention or utility model that has been granted a patent right shall be novel, creative and practical.
Article 34 After receiving an application for a patent for invention, the administrative department for patent in the State Council, after preliminary examination, finds that it conforms to the provisions of this Law, and shall publish it after 18 months from the date of filing. The patent administration department of the State Council may publish its application at an early date upon the request of the applicant.
Article 35 Within 3 years from the date of filing, the administrative department for patent in the State Council may, upon the request of the applicant at any time, make a substantive examination of the application; If the applicant fails to request substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.
The patent administrative department of the State Council may, when it deems it necessary, examine the application for a patent for invention on its own.
Article 36 When requesting substantive examination, an applicant for a patent for invention shall submit reference materials related to his invention before the date of application.