关键词: 专利质量, 信息不对称, 柠檬市场效应, Patent Quality, Asymmetric Information, Lemons Market Effects

Abstract: This paper analyzes the repulsion effect from low quality patents to high quality patents, based on the theoretical basis of lemons market effects, specifically analyzes how do the low quality patents expel the high quality patents out of the market under asymmetric information of patent quality in the process of patent application and examination , the settlement of patent invalidation, as well as patent licensing and trading. Finally this paper makes policy recommendations solving the above problems.