论文标题
新兴经济体专利生存的决定因素：印度住宅专利的证据
Determinants of Patent Survival in Emerging Economies: Evidence from Residential Patents in India
论文作者
论文摘要
本文的目的是使用专利水平特征来估计居民专利的生存（在印度专利局（IPO）提交并分配给印度公司）。这项研究使用了1995年1月1日和2005年12月31日申请的公司级专利的续签信息，最终获得了授予。 IPO提供的数据包括分配给266家公司（外国子公司和国内公司）的2025名居民专利。生存分析是通过Kaplan-Meier估计和COX比例危害回归进行的。这项研究的结果表明，专利的存活时间大大取决于其技术范围和发明家的规模。此外，与剩余公司的专利相比，获得税收抵免福利的公司的专利显示出较低的生存率。该研究还发现，具有DSIR隶属关系的外国公司提出的专利正在从研发税激励政策中获得更多的好处。
The purpose of this paper is to use patent level characteristics to estimate the survival of resident patents (filed at the Indian Patent Office (IPO) and assigned to firms in India). This study uses the renewal information of firm-level patents applied during 1st January 1995 and 31st December 2005, which were eventually granted. The data provided by IPO consists of 2025 resident patents assigned to 266 firms (foreign subsidiary firms and domestic firms). The survival analysis is carried out via Kaplan-Meier estimation and Cox proportional hazard regression. The outcomes of this study suggest that the survival length of patents significantly depends on their technological scope and inventor size. Moreover, the patents of the firms taking tax credit benefits exhibit lower survival rate as compared to patents of remaining firms. The study also finds that the patents filed by foreign firms with DSIR affiliation are getting more benefit from the R&D tax incentive policy.
