1, you can check it on the website of the State Patent Office. 2. Enter the patent number in the query column to query the legal status of the patent, and you can see what status the patent is in. 3, utility model and appearance patent can only be found after authorization. An invention patent is authorized if it can find an authorized description, but it is not authorized if it only has a public description. 4. The patent number is the number given when the patent right is granted, and it is a submission number. The submission number is the serial number compiled by each industrial property office when publishing patent documents (including public publication and reading and copying only). Patent number refers to the patent certificate issued by China National Intellectual Property Administration after the patent applicant obtains the patent right. Patent number: ZL (patent initials)+application number.
Legal objectivity:
Article 34 of the Patent Law of People's Republic of China (PRC) * * * 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, shall immediately publish it after 18 months from the date of application. The patent administration department of the State Council may publish its application at an early date upon the request of the applicant.