A Brief History of Space and Time: The Scope-Year Index as a Patent Value Indicator Based on Families and Renewals

24 Pages Posted: 23 May 2008

See all articles by Bruno van Pottelsberghe de la Potterie

Bruno van Pottelsberghe de la Potterie

Free University of Brussels - Solvay Business School; Université Libre de Bruxelles (ULB) - Department of Applied Economics (DULBEA); Centre for Economic Policy Research (CEPR)

Nicolas van Zeebroeck

Université Libre de Bruxelles, Solvay Brussels School of Economics and Management, iCite

Date Written: June 2007

Abstract

The renewal of patents and their geographical scope for protection constitute two essential dimensions in a patent's life, and probably the most frequently used patent value indicators. The intertwining of these dimensions (the geographical scope of protection may vary over time) makes their analysis complex, as any measure along one dimension requires an arbitrary choice on the second. This paper proposes a new indicator of patent value, the Scope-Year index, combining the two dimensions. The index is computed for patents filed at the EPO from 1980 to 1996 and validated in its member states. It shows that the average value of patent filings has increased in the early eighties but has constantly decreased from the mid-eighties until the mid nineties, despite the institutional expansion of the EPO. This result sheds a new and worrying light on the worldwide boom in patent filings.

Keywords: geographical scope, patent families, patent statistics, Patent value, renewals

JEL Classification: K1, L1, O34, O38

Suggested Citation

van Pottelsberghe de la Potterie, Bruno and van Zeebroeck, Nicolas, A Brief History of Space and Time: The Scope-Year Index as a Patent Value Indicator Based on Families and Renewals (June 2007). CEPR Discussion Paper No. DP6321, Available at SSRN: https://ssrn.com/abstract=1136647

Bruno Van Pottelsberghe de la Potterie (Contact Author)

Free University of Brussels - Solvay Business School

50 Avenue Roosevelt
Brussels 1050
Belgium

Université Libre de Bruxelles (ULB) - Department of Applied Economics (DULBEA) ( email )

Ave. Franklin D Roosevelt 50
Brussels, B-1050
Belgium

Centre for Economic Policy Research (CEPR)

London
United Kingdom

Nicolas Van Zeebroeck

Université Libre de Bruxelles, Solvay Brussels School of Economics and Management, iCite ( email )

Ave. Franklin D Roosevelt, 50 - C.P. 114/4
Brussels, B-1050
Belgium
+3226503375 (Phone)

HOME PAGE: http://www.vanzeebroeck.net

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