中国最优知识产权保护强度的实证研究

An empirical study on China's optimal intellectual property protection level

通过研究知识产权保护对经济增长的作用关系,探究中国最优知识产权保护强度。首先,选取国际贸易开放度和R&D活动作为控制变量,构建了实证回归模型。其次,测算了1985-2009年中国的固定资本存量、技术知识存量,以及1985-2010年中国的知识产权保护强度。最后,利用中国的时间序列数据,实证研究发现中国知识产权保护对经济增长的作用呈倒"U"型关系,最优的知识产权保护强度值为3.564。中国现有的知识产权保护强度并没有达到最优值,继续加强知识产权保护对经济增长有着正向的促进作用,且主要通过国际贸易和R&D活动的渠道发挥作用。

This paper attempts to explore China＇ s optimal intellectual property protection level through studying the effects of intellec- tual property rights （IPR） on economic growth. Firstly, the paper selects openness and R＆D activities as control variables, and con- structs empirical regression model. Secondly, China＇ s physical capital stocks, technology capital stocks from 1985 to 2009 are calcu- lated, and China＇ s level of IPR from 1985 to 2010 is also calculated. Finally, empirical analysis is conducted using China＇ s time se- ries data. The results show that the relationship between IPR and economic growth is inverted ＂U＂, and the optimal IPR index for Chi- na is 3. 564. Now China＇ s intellectual property protection level is lower than this optimal point. As a result, strengthening China＇ s IPR protection can promote economic growth, and these effects are mainly through the channels of international trade and R＆D activities.