Patent literally refers to exclusive rights and interests. In modern times, a patent is generally a document issued based on an application by a government agency or a regional organization representing several countries. This document records the content of the invention and creates a legal status within a certain period of time, that is, obtaining the patent. Generally, others can implement a patented invention only with the permission of the patentee. In my country, patents are divided into three types: invention, utility model and design.