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This article assesses the rate of obsolescence of patents with measurements of the rate in Japan. Our study departs from Parkes and Schankerman (1989) and Schankerman (1998) because of its application of the ordered probit model. The application of this model enables us to consider the case of...
Persistent link: https://www.econbiz.de/10005836191
The prize system for innovation has been criticized as impractical due to the lack of a workable formula or algorithm … can function to duplicate Pareto optimality. Under this system, any bountiable innovation is placed in the public domain …, and the prize of innovation is dynamically amortized in an infinitely time domain as periodic bounties paid to holders of …
Persistent link: https://www.econbiz.de/10011259176
The prize system for innovation has been criticized as impractical due to the lack of any workable formula or algorithm … can function to duplicate Pareto optimality. Under this system, any bountiable innovation is placed in the public domain …, and the prize of innovation is dynamically amortized in an infinite time domain as periodic bounties paid to holders of …
Persistent link: https://www.econbiz.de/10010729014
patent publications related to the innovation. Our estimate of the lower bound on the market valuation of iPhone is fairly … the publication of patent documents concerning iPhone can be observed. The evidence suggests that the value of iPhone …
Persistent link: https://www.econbiz.de/10008794653
over the 1993-2003 period, firms with overconfident CEOs have greater return volatility, invest more in innovation, obtain … more patents and patent citations, and achieve greater innovative success for given research and development (R …&D) expenditure. Overconfident managers only achieve greater innovation than non-overconfident managers in innovative industries …
Persistent link: https://www.econbiz.de/10008560965
Based on a survey of the inventors of 9,017 European patented inventions, this paper provides new information about the characteristics of European inventors, the sources of their knowledge, the importance of formal and informal collaborations, the motivations to invent, and the actual use and...
Persistent link: https://www.econbiz.de/10005187255
homogeneous good. One of the firms (patent holder) develops a cost reduction innovation (drastic or non-drastic) and got a patent … unjust enrichment (UE), both damage rules that are used by courts in the calculation of damages when a patent has been … for this innovation. Under the shadow of probabilistic property rights, It is founded that licensing by using royalty rate …
Persistent link: https://www.econbiz.de/10005034377
innovation for less than the full length of the patent and that royalty contracts can be used to overcome a time …
Persistent link: https://www.econbiz.de/10005019435
the number of objections as well as the number of citations. We construct the database of patent stock, citation …-weighted patent stock and objection-weighted patent stock. Our analysis is pioneering work involving Japanese data, as we were unable … to find any pre-existing Japanese data that considered both truncation problems and quality of the patent. Our study …
Persistent link: https://www.econbiz.de/10005623395
This paper seeks to explain why some pharmaceutical companies are observed to withdraw their products before patents are expired and simultaneously introduce new patented (competing) products. Given the specific nature of drug markets, the companies in fact increase the entry cost of the...
Persistent link: https://www.econbiz.de/10008559053