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Citation Frequency And The Value Of Patented Inventions

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  • Dietmar Harhoff
  • Francis Narin
  • F. M. Scherer
  • Katrin Vopel
Abstract
Through a survey, private economic value estimates were obtained on 964 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A search of subsequent U.S. and German patents yielded counts of citations to those patents. Patents renewed to full-term were significantly more highly cited than patents allowed to expire before their full term. The higher an invention's economic value estimate was, the more the patent was subsequently cited. © 1999 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology

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  • Dietmar Harhoff & Francis Narin & F. M. Scherer & Katrin Vopel, 1999. "Citation Frequency And The Value Of Patented Inventions," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 511-515, August.
    • Handle: RePEc:tpr:restat:v:81:y:1999:i:3:p:511-515
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