Lawyer Ma Yingqiu’s answer:
Hello, I am happy to answer your legal questions about patent licensing. The materials required to apply for a patent license are:
(1) The licensee shall enter into a written implementation license contract with the licensor;
(2) Pay the licensor for the use of the patent as agreed fee;
(3) A patent license contract entered into between a patentee and another person shall be filed with the State Intellectual Property Office within 3 months from the effective date of the contract.
To apply for a patent license, you must go to the local patent office for filing. The filing of the patent license contract does not affect the validity of the contract.