It depends on the specific situation. Article 70 of the Patent Law stipulates that anyone who uses, promises to sell or sells an infringing patented product for the purpose of production and operation without knowing that it was manufactured and sold without the permission of the patentee shall not be liable for compensation. Therefore, whether ... the product infringing the patent right is infringing depends on whether the buyer knows that the product is infringing.
Legal objectivity:
Article 11 of the Patent Law After the patent right for invention and utility model is granted, except as 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, nor may it 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.