双向知识产权保护对中国出口三元边际的影响

理论分析了双向知识产权保护对出口国出口三元边际的影响，并选取2005—2015年中国出口到世界65个国家的HS-6位贸易数据，构建引力模型进行了实证验证。主要结论是，国内加强知识产权保护可以提升中国的出口种类和数量，贸易伙伴国加强知识产权保护可以提升中国的出口种类；没有证据表明，国内或国外知识产权保护水平的提升会影响中国的出口价格；当国内知识产权保护更强时，双向知识产权保护对中国出口种类的促进作用都有所增强，反之则二者作用都不显著；分国家类型的研究表明，双向知识产权保护的同时加强更有益于中国向发展中国家出口产品种类的扩张，但对发达国家则不显著。

Impact of Intellectual Property Rights Protection on Variety,Price and Quantity Response of China's Exports

This article analyzes the impact of two-way intellectual property protection on the export ternary margin of exporting countries. A gravity model is established from the HS-6 digit trade data of China's exports spanning 2005～2015 to verify the theoretical hypothesis. The main findings from this study are：firstly, strengthening domestic intellectual property rights protection is able to increase the varieties and quantities of China's exports, while strengthening intellectual property rights protection in trading partner countries can increase the varieties of exports in China; secondly, there is no evidence that domestic and foreign intellectual property rights protection has a determinant effect on China's export prices; thirdly, when the domestic intellectual property protection is stronger, the role of two-way intellectual property protection in promoting China's export variety is enhanced, on the contrary, neither role is significant; fourthly, the difference in the country-specific research shows that strengthening two-way intellectual property protection at the same time is more conducive to the expansion of China's export products to developing countries, but it is not significant to developed countries.