Beijing Wuyi International Intellectual Property Answers, Patent (patent) literally refers to exclusive rights and interests. The word "patent" comes from the Latin word Litterae patentes, which means a public letter or public document. It was used by medieval monarchs to prove certain privileges, and later referred to the exclusive rights certificate signed by the British king himself.
In modern times, a patent is generally a document issued upon application by a government agency or a regional organization representing several countries. This document records the content of the invention and creation, and is produced within a certain period of time. A legal state in which a patented invention can generally be implemented by others only with the permission of the patentee. In my country, patents are divided into three types: invention, utility model and design.