http://www.guocai-lawfirm.com/patent/ About infringement or not Article 11 of the patent law stipulates that after the patent right for invention and utility model is granted, except as otherwise provided in this law, no entity or individual may exploit its patent without the permission of the patentee, that is, it shall not manufacture, use, promise to sell, sell or import its patented products, or use its patented methods, use, promise to sell, sell or import its patented products for production and business purposes Import products directly obtained according to the patented method. After the patent right for design is granted, no entity or individual may exploit its patent without the permission of the patentee, that is, it shall not manufacture, promise to sell, sell or import its patented product for production and business purposes. Article 69 Any of the following circumstances shall not be deemed as an infringement of the patent right Having manufactured the same product, used the same method or made necessary preparations for manufacturing or using before the patent application date, and continuing to manufacture or use only within the original scope; Article 70 using, promising to sell or selling a patent infringing product that is not known to have been manufactured and sold without the permission of the patentee for the purpose of production and operation can prove that the product is in conformity Those from legal sources shall not be liable for compensation.Documents for Patent website:http://www.guocai-lawfirm.com/patent/