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We study the impact of small firms on innovation in regions where large labs are present. Small firms generate demand for specialized services that lower entry costs for others. This effect is particularly relevant in the presence of large firms that spawn spin-outs caused by innovations deemed...
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This paper studies how patent rights and price regulation affect how fast new drugs are launched in different countries, using newly constructed data on launches of 642 new drugs in 76 countries for the period 1983-2002, and information on the duration and content of patent and price control...
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This paper investigates the characteristics of litigated patents by combining for the first time information about patent case filings from the U.S. district courts and detailed data from the U.S. Patents and Trademark Office. A series of indicators is constructed for the factors which the...
Persistent link: https://www.econbiz.de/10005310326
When firms have different R&D productivities, it may be welfare increasing to differentiate patent lives across inventions. The reason is that the uniform patent life provides excessive incentives to do R&D to the low productivity firms and insufficient incentives to high productivity firms....
Persistent link: https://www.econbiz.de/10005670768
We analyse the determinants of the decline in measured research productivity (the patent/R&D ratio)using panel data on manufacturing firms in the U.S. for the period 1980-93. We focus on three factors: the level of demand, the quality of patents, and technological exhaustion. We first develop an...
Persistent link: https://www.econbiz.de/10005670777
This paper shows that the process of enforcing patent rights both dilutes and distorts Research and Development (R&D) incentives. We examine the characteristics of litigated patents by combining, for the first time, information about patent case filings from the US district courts with detailed...
Persistent link: https://www.econbiz.de/10005124091