The embryonic form of patent system sprouted in medieval Europe. /kloc-in the middle of the 0/5th century, the embryonic form of patent system was born in Britain and Italy, where commodity economic relations were initially developed. This is the monopoly right granted by the feudal monarchy to some businessmen or craftsmen to operate a certain technology exclusively. From the initial franchise, patent law has developed into a legal system to protect the interests of inventors and promote the development of science and technology. In the Patent Law, the state recognizes the inventor's creative achievements as the inventor's property rights, and grants him the exclusive monopoly right for a certain period of time, in exchange for the inventor to disclose his invention achievements to the society, so as to properly solve the interest relationship between the inventor and society.