What is the patent infringement stipulated in the patent law?

Legal analysis: the infringement meets two conditions: one is without the permission of the patentee, and the other is for the purpose of production and operation. Patent infringement means that the valid patent protected by China's patent law is infringed by some illegal act, and the actor uses the patent without the permission of the patentee to obtain illegitimate interests for himself.

Legal basis: After the patent right for inventions and utility models is granted in Article 11 of the Patent Law of People's Republic of China (PRC), except as otherwise provided in this Law, no unit or individual may exploit the patent without the permission of the patentee, that is, they may not manufacture, use, promise to sell, sell or import their patented products for production and business purposes, or use their 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.