Legal basis: Civil Code of People's Republic of China (PRC).
Article 865 A patent licensing contract is valid only within the term of the patent right. Where the term of validity of the patent right expires or the patent right is declared invalid, the patentee may not conclude a patent licensing contract with others for the patent.
Article 866 The licensor of a patent exploitation license contract shall, in accordance with the agreement, license the licensee to exploit the patent, deliver technical materials related to the exploitation of the patent, and provide necessary technical guidance.
Article 867 The licensee of a patent exploitation license contract shall exploit the patent in accordance with the agreement, and shall not license a third party other than the agreement to exploit the patent and pay the royalties in accordance with the agreement.