Abstract: The indicators in Ginart & Park (1997) are adjusted by implementation intensity of the law, and the actual intellectual property rights are estimated for China. Meanwhile, the total R&D stocks formatted by domestic R&D investment and technology purchases are estimated using the perpetual inventory method. By incorporating the actual property rights and the total R&D stocks in the TFP model, we investigate the effect of intellectual property protection on the technological progresses in China through international trade and R&D activity. Two results stand out. First, the elasticity of the total factor productivity with respect to intellectual property rights are between 0.114 and 0.190, indicating that intellectual property rights are positively correlated with the total factor productivity in China. Second, the main channels by which intellectual property rights contribute to technological progresses are the international trade and R&D activities.

Key words: intellectual property rights, R&D stocks, total factor productivity

摘要： 在利用中国的执法强度修正Ginart等构建的指标体系的基础上，测算了1985～2009年中国实际的知识产权保护强度，同时，基于永续盘存法测算了我国自主R&D投资和技术引进产生的技术知识存量，将其代入构建的技术进步计量模型中，实证分析了知识产权保护通过国际贸易和R&D活动促进中国技术进步的作用效果。研究结果表明：知识产权保护强度显著促进了我国的全要素生产率，其全要素生产率的弹性系数介于0.114～0.190之间；进一步的研究发现，知识产权保护强度与国际贸易开放度、技术知识存量的交互系数显著正相关，这表明，知识产权保护通过国际贸易和R&D活动显著促进了我国的技术进步。

关键词: 知识产权保护, 技术知识存量, 全要素生产率