legal ground
After the patent right of invention and utility model in Article 11 of the Patent Law of People's Republic of China (PRC) has been granted, unless otherwise provided in this Law, no unit or individual may exploit the patent without the permission of the patentee, that is, it may not manufacture, use, promise to sell, sell or import its patented products for production and business purposes, or use its patented methods and use, promise to sell, sell or import products directly obtained according to the patented methods. After the design patent is granted, no unit or individual may exploit its patent without the permission of the patentee, that is, it may not manufacture, promise to sell, sell or import its patented product for production and business purposes. Article 12 Any unit or individual that exploits another person's patent shall conclude an exploitation license contract with the patentee and pay the patentee the royalties. The licensee has no right to allow any unit or individual other than those stipulated in the contract to exploit the patent.