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Articles in Refereed Journals
Innovation and Entrepreneurship Research

Citation Frequency and the Value of Patented Innovation

Harhoff, Dietmar; Narin, Francis; Scherer, F. M.; Vopel, Katrin (1999). Citation Frequency and the Value of Patented Innovation Review of Economics and Statistics, 81 (3), 511-515.

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.

http://www.jstor.org/stable/2646773