| 来源类型 | Working Paper
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| 规范类型 | 报告
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| DOI | 10.3386/w4475
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| 来源ID | Working Paper 4475
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| Patent Protection: Of What Value and for How Long? |
| Jean Olson Lanjouw
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| 发表日期 | 1993-09-01
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| 出版年 | 1993
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| 语种 | 英语
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| 摘要 | Empirical estimates of the private value of patent protection are found for four technology area - computers, textiles, combustion engines, and pharmaceuticals - using new patent data for West Germany, 1953-1988. Patentees must pay to keep their patents in force. A dynamic stochastic discrete choice model of optimal renewal decisions is developed incorporating both learning about an innovation and the market as well as the possibility of infringements. The evolution of the distribution of returns over the life of a group of patents is calculated for each technology using a minimum distance simulation estimator. Results indicate that learning is completed within 6 years, that obsolescence is rapid, and that the distributions of patent value are very skewed. Research and development (R&D) expenditures are calculated and patent protection as an implicit subsidy to investment in R&D discussed. |
| 主题 | Industrial Organization
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| URL | https://www.nber.org/papers/w4475
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| 来源智库 | National Bureau of Economic Research (United States)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/561851
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推荐引用方式
GB/T 7714 |
Jean Olson Lanjouw. Patent Protection: Of What Value and for How Long?. 1993.
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文件名：
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w4475.pdf
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格式：
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Adobe PDF
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