What is the applicable system of patent trading?

The patent system is the product of market economy, and the market is the "wind vane" of patented technology. Therefore, it has the characteristics of operating according to the market economic system and market mechanism. During the planned economy period, China promoted the development of scientific and technological inventions to a certain extent in the closed social system through policy measures such as technical appraisal, achievement award and publication of papers. However, the direct consequence of these policies and management measures is that they only pay attention to academics but not to the market, which is not conducive to solving the commercialization and marketization problems after technological inventions. As a result, many new technologies were shelved after the completion of scientific research, or made public at home and abroad, until the documents were published, and foreign products in turn had a serious impact on China in the international market. After all, it is impossible to form a virtuous circle of "knowledge-patent-innovation".