Method invention refers to the operating method and technical process created to manufacture a product or solve a certain technical problem. The methods here can be chemical methods, mechanical methods, communication methods, and methods described in the order specified by the process. For example, paper making methods, steel making methods, printing methods, communication methods, etc. After a method invention is patented, it is called a method patent. my country's "Patent Law" stipulates that the protection of process patents extends to products directly obtained by using the method that are imported or used or sold within the territory of my country. This means that without the permission of the method invention patentee, no unit or individual may use its patented method or use or sell products directly obtained according to the patented method.