Patent is the abbreviation of patent right. It is a document issued by a patent agency based on an invention application. This kind of document describes the content of the invention and creates a legal status, that is, the patented invention can generally only be used (including manufacturing, using, selling and importing, etc.) with the permission of the patent owner. The protection of the patent is Time and geographical restrictions. my country's patent law divides patents into three types, namely inventions, utility models and designs.