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Induction and Evolution in the Origin of Inventions: Evidence from Smoking Cessation Products

Jaffe, Adam; Werfel, Seth H. - National Bureau of Economic Research (NBER) - 2010

innovation in a socially desirable substitute. Evolutionary theory emphasizes the possibility of innovation waves associated with … products. It does appear, however, that dominant designs did have substantial positive innovation effects. More specifically … innovation effects at the firm level than among individual inventors. …

Persistent link: https://www.econbiz.de/10008727849

International Knowledge Flows: Evidence from Patent Citations

Jaffe, Adam; Trajtenberg, Manuel - National Bureau of Economic Research (NBER) - 1998

This paper explores the patterns of citations among patents taken out by inventors in the U.S., the U.K., France, Germany and Japan. We find (1) patents assigned to the same firm are more likely to cite each other, and come sooner than other citations; (2) patents in the same patent class are...

Persistent link: https://www.econbiz.de/10005714546

Market Value and Patent Citations: A First Look

Hall, Bronwyn H; Jaffe, Adam; Trajtenberg, Manuel - National Bureau of Economic Research (NBER) - 2000

As patent data become more available in machine-readable form, an increasing number of researchers have begun to use measures based on patents and their citations as indicators of technological output and information flow. This paper explores the economic meaning of these citation-based patent...

Persistent link: https://www.econbiz.de/10005714551

Environmental Regulation and Innovation: A Panel Data Study

Jaffe, Adam; Palmer, Karen - National Bureau of Economic Research (NBER) - 1996

effect on the performance of domestic firms relative to their foreign competitors, by stimulating domestic innovation. We … examine the stylized facts regarding environmental expenditures and innovation in a panel of manufacturing industries. We find …

Persistent link: https://www.econbiz.de/10005714837

Are Patent Fees Effective at Weeding out Low-quality Patents?

Jaffe, Adam; Rassenfosse, Gaétan de - National Bureau of Economic Research (NBER) - 2014

The paper investigates whether patent fees are an effective mechanism to deter the filing of low-quality patent applications. The study analyzes the effect of the Patent Law Amendment Act of 1982, which resulted in a substantial increase in patenting fees at the U.S. Patent and Trademark Office,...

Persistent link: https://www.econbiz.de/10011105939