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The puzzle of patent value indicators

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Author Info
Nicolas van Zeebroeck () (Centre Emile Bernheim, Solvay Business School, Université Libre de Bruxelles, Brussels.)

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Abstract

This paper reviews and analyses several issues in the measurement and interpretation of patent value indicators over a large database. Each of the five most classical indicators proposed in the literature (family sizes, renewals, grant decision outcomes, forward citations, and oppositions) witnesses the well-known properties of patent value: a severe skewness and significant country and technology variations. Nonetheless, a high degree of orthogonality appears between them as well as opposite trends in their evolution, suggesting that they actually capture different dimensions of a patent’s value and therefore do not always pinpoint the same patents as being the most valuable. To maximize the chances of capturing all potentially valuable patents in a large database, a composite index is proposed, which reflects the intensity of the patent value signal provided by all five constituting indicators. Its declining trend reflects a rarefaction of this signal on average, leading to different plausible int erpretations.

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File URL: http://www.solvay.edu/EN/Research/Bernheim/documents/wp07023.pdf
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Paper provided by Université Libre de Bruxelles, Solvay Business School, Centre Emile Bernheim (CEB) in its series Working Papers CEB with number 07-023.RS.

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Length: 39 pages
Date of creation: Aug 2007
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Handle: RePEc:sol:wpaper:07-023

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Related research
Keywords: Patent value Families Renewals Oppositions Citations

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Find related papers by JEL classification:
O31 - Economic Development, Technological Change, and Growth - - Technological Change - - - Innovation and Invention: Processes and Incentives
O34 - Economic Development, Technological Change, and Growth - - Technological Change - - - Intellectual Property Rights
O50 - Economic Development, Technological Change, and Growth - - Economywide Country Studies - - - General

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  1. Socio-Economics of Innovation
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