Where can I view the electronic patent authorization certificate?

After applying for patent authorization successfully, you can query and print the electronic patent authorization certificate through the public patent database in China National Intellectual Property Administration or WIPO. Among them, China National Intellectual Property Administration provides a variety of ways to query and browse patents, such as "patent retrieval and browsing system" (CNIPR), "patent retrieval system" and "patent open directory project and retrieval system". These systems can query by keyword, patent number, applicant, application date, classification number, etc., and provide downloading and viewing services of electronic patent documents, authorization announcements, authorization certificates and other formats. WIPO website also provides similar query and download services. It should be noted that there may be differences between patent licensing agencies and databases in different countries and regions, so the appropriate platform and method should be selected when inquiring.