Citation Frequency and the Value of Patented Inventions
- 1 August 1999
- journal article
- Published by MIT Press in The Review of Economics and Statistics
- Vol. 81 (3) , 511-515
- https://doi.org/10.1162/003465399558265
Abstract
Citation Frequency and the Value of Patented Innovationby Dietmar Harhoff, Francis Narin, Frederic M. Scherer, Katrin Vopel*Through a survey, economic value estimates were obtained on 962 inventions made inthe United States and Germany and on which German patent renewal fees were paid tofull-term expiration in 1995. A search of subsequent U.S. and German patents yielded acount of citations to those patents. Patents renewed to full term were significantly morevaluable than patents...Keywords
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This publication has 4 references indexed in Scilit:
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