How to inquire about existing patents?

Legal analysis: log on to China National Intellectual Property Administration website or China Intellectual Property Network; Click the advanced search in the patent search section on the right; Enter the keywords you know, such as patent number or patent name, and click the red search button; Obtain all relevant patent search tables, select a patent and enter the specific title page of the patent; If you are prompted to install the plug-in, install it as required, otherwise you cannot browse the manual; Click the Description button at the bottom of the patent number to enter the description page, where you can browse the specific content; Click the Save button on the top line to select the download path, and then click OK to download successfully.

Legal basis: People's Republic of China (PRC) Patent Law.

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substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.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 40 If the application for a patent for utility model or design is not found to be rejected after preliminary examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for utility model or design, issue the corresponding patent certificate, and register and announce it at the same time. The patent right for utility model and the patent right for design shall take effect as of the date of announcement.