With the internationalization of market economy, the importance and necessity of patent system is particularly important. What are its main aspects? The market economy is moving towards globalization, which means the liberalization and integration of international economic development. The so-called liberalization means that the flow of goods, products, information, people and capital is becoming more and more free, and the market is getting bigger and bigger. It is no longer a region or a country, but the whole world. The so-called integration means that the development of market economy goes to the world, which inevitably requires the market economy to operate under the same rules in order to develop orderly and healthily. The World Trade Organization aims to establish a * * * rule, so that market competition and paid value exchange in the market can develop in an orderly and healthy way. The patent system just embodies these aspects. Therefore, the more the market economy develops, the more liberalized, integrated and globalized, and the more the development of human society depends on knowledge and technology, the more people realize the importance and necessity of the patent system. This is the most important reason why governments, heads of state at home and abroad and even international organizations, especially the World Trade Organization, attach so much importance to the patent system.