| 来源类型 | Discussion paper |
| 规范类型 | 论文 |
| 来源ID | DP9458 |
| DP9458 Patents and Cumulative Innovation: Causal Evidence from the Courts | |
| Mark Schankerman; Alberto Galasso | |
| 发表日期 | 2013-04-28 |
| 出版年 | 2013 |
| 语种 | 英语 |
| 摘要 | Cumulative innovation is central to economic growth. Do patent rights facilitate or impede such follow-on innovation? This paper studies the effect of removing patent protection through court invalidation on the subsequent research related to the focal patent, as measured by later citations. We exploit random allocation of judges at the U.S. Court of Appeal for the Federal Circuit to control for the endogeneity of patent invalidation. We find that patent invalidation leads to a 50 percent increase in subsequent citations to the focal patent, on average, but the impact is highly heterogeneous. Patent rights appear to block follow-on innovation only in the technology fields of computers, electronics and medical instruments. Moreover, the effect is entirely driven by invalidation of patents owned by large patentees that triggers entry of small innovators, suggesting that patents may impede the ?democratization? of innovation. |
| 主题 | Industrial Organization |
| 关键词 | Cumulative innovation Patents Litigation Judges Courts |
| URL | https://cepr.org/publications/dp9458 |
| 来源智库 | Centre for Economic Policy Research (United Kingdom) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/538292 |
| 推荐引用方式 GB/T 7714 | Mark Schankerman,Alberto Galasso. DP9458 Patents and Cumulative Innovation: Causal Evidence from the Courts. 2013. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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