【摘要】 在加快全国统一大市场建设的背景下，知识产权示范城市建设是影响企业跨区域投资的重要因素，对于打破要素市场分割具有重要意义。本文根据手工搜集整理的2010—2022年沪深A股上市的高新技术企业及其子公司数据，考察了知识产权示范城市建设对跨区域投资的影响及作用机制。研究发现，知识产权示范城市建设显著促进了高新技术企业跨区域投资。机制分析表明，知识产权保护效应和创新资源获取效应是知识产权示范城市建设影响高新技术企业跨区域投资的两个重要渠道。异质性分析显示，知识产权示范城市建设对高新技术企业跨区域投资的影响在省内企业、拥有跨区域投资经验的企业和知识产权宣传力度大的试点城市样本中表现得更为明显；同时，知识产权示范城市建设促进高新技术企业跨区域投资的地理边界大致为1000公里。本文的研究结论对于充分发挥知识产权示范城市建设在促进高新技术企业跨区域投资以及推动全国统一大市场建设中的作用具有重要政策启示。更多还原

【Abstract】 In the context of accelerating the construction of a unified national market, the construction of intellectual property demonstration cities is an important factor affecting the cross-regional investment of enterprises, and it is of great significance to break the segmentation of factor markets. Based on the data of high-tech enterprises and their subsidiaries listed on the Shanghai and Shenzhen A-share markets from 2010 to 2022, this paper examines the impact and mechanism of intellectual property demonstration cities on cross-regional investment. The study finds that the construction of intellectual property demonstration cities has significantly promoted the cross-regional investment of high-tech enterprises. The analysis of the mechanism shows that the effect of intellectual property protection and the effect of access to innovation resources are two important channels for the construction of intellectual property demonstration cities to affect the cross-regional investment of high-tech enterprises. The heterogeneity analysis shows that the impact of the construction of intellectual property demonstration cities on the cross-regional investment of high-tech enterprises is more obvious in the samples of enterprises in the province, enterprises with cross-regional investment experience and pilot cities with strong intellectual property publicity. At the same time, the geographical boundary of the construction of intellectual property demonstration cities to promote cross-regional investment of high-tech enterprises is roughly 1,000 kilometers. The conclusions of this paper have important policy implications for giving full play to the construction of intellectual property demonstration cities in promoting cross-regional investment of high-tech enterprises and promoting the construction of a unified national market.更多还原