What are the requirements for using other people's patented products?

Legal analysis: the use of patented products requires authorization. Users need to sign a written patent license contract with the patentee, obtain the consent of the patentee, and pay a certain royalty to the patentee.

Legal basis: Article 12 of the Patent Law of People's Republic of China (PRC), where any unit or individual exploits another person's patent, it shall conclude an exploitation license contract with the patentee and pay the patentee the exploitation fee. The licensee has no right to allow any unit or individual other than those stipulated in the contract to exploit the patent.