Legal analysis: the parties who view the patent license filing can inquire about the relevant announcements. Article 14 of the Measures for the Filing of Patent Licensing Contracts stipulates that the relevant contents of the filing of patent licensing contracts shall be registered in the patent register by China National Intellectual Property Administration, and the following contents shall be announced in the patent gazette: licensor, licensee, main classification number, patent number, application date, authorization announcement date, license type and duration, and application date.
Legal basis: Article 14 of the Measures for the Filing of Patent Licensing Contracts, the relevant contents of the filing of patent licensing contracts are registered in the patent register by China National Intellectual Property Administration, and the following contents are announced in the patent bulletin: licensor, licensee, main classification number, patent number, application date, authorization announcement date, license type and duration, and application date.