By: |
Bruno Van Pottelsberghe (Centre Emile Bernheim, Solvay Business School, Université Libre de Bruxelles, Brussels);
Nicolas van Zeebroeck (Centre Emile Bernheim, Solvay Business School, Université Libre de Bruxelles, Brussels.) |
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: |
Patent value, geographical scope, renewals, patent statistics, patent families. |
JEL: |
K1 L1 O34 O38 |
Date: |
2007–06 |
URL: |
http://d.repec.org/n?u=RePEc:sol:wpaper:07-019&r=law |