There are several kinds of legal patent license filing.

Legally, there are several provisions for filing a patent licensing contract. There is only one form for filing a patent licensing contract, which is to file an application with China National Intellectual Property Administration. Relevant laws and regulations "Measures for Filing Patent Licensing Contracts" Article 2 China National Intellectual Property Administration is responsible for filing patent licensing contracts nationwide. Article 3 The licensor of a patent exploitation license shall be a legitimate patentee or other obligee. Where a patent licensing contract is concluded with the patent right owned by ×××, the consent of other owners of ××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××××× Article 5 The parties concerned shall go through the filing formalities within 3 months from the date when the patent licensing contract comes into effect. Article 7 The parties concerned may go through the formalities for filing the patent licensing contract by mail, direct delivery or other means stipulated by China National Intellectual Property Administration. Article 8 To apply for filing a patent licensing contract, the following documents shall be submitted: (1) An application form for filing a patent licensing contract signed or sealed by the licensor or the patent agency entrusted by it; (2) Patent licensing contracts; (3) Identification certificates of both parties; (4) If a patent agency is entrusted, the power of attorney of the authorizing organ shall be indicated; (5) Other materials that need to be provided. How long does it take to file a patent license? According to the Measures for Filing Patent License Contracts, a patent license contract shall be filed within three months after it takes effect, and the Intellectual Property Office shall make a decision within seven days after receiving the application. According to the relevant laws and regulations, Article 5 of the Measures for Filing Patent License Contracts shall be filed within 3 months from the effective date of the patent license contracts. Article 7 The parties concerned may go through the formalities for filing the patent licensing contract by mail, direct delivery or other means stipulated by China National Intellectual Property Administration. Eleventh China National Intellectual Property Administration shall, within 7 working days from the date of receiving the application for filing, make a review and decide whether to file. Article 12 If the filing application is approved after examination, China National Intellectual Property Administration shall issue a patent licensing contract filing certificate to the parties concerned. According to the relevant patent laws and regulations, there is only one application form for patent license. For this kind of filing work, it involves a wide range of contents and a long time. Then the processing of project data needs a lot of resources. A form of filing can reduce the workload and resources needed for sorting out some aspects to a certain extent.