Patent

Patent is the abbreviation of patent right. It is a document issued by the patent office according to the invention application. This kind of document describes the content of the invention, and produces a legal state, that is, the patented invention can only be used (including manufacturing, use, sales and import) with the permission of the patent owner in general, and the protection of the patent is limited by time and region. China's patent law divides patents into three categories: invention, utility model and design.