Stars and Comets: An Exploration of the Patent Universe
The analysis of patent and citation data has become a popular source of evidence on localizedknowledge spillovers and innovation. Nevertheless, an aspect has been overlooked: the patentdistribution across inventors is extremely skewed, as many inventors register one or a fewpatents, while a small number of inventors register many patents. To our knowledge, theprevious empirical literature has not discussed the different kinds of local innovation fromwhich patents may originate. A first contribution of this paper is therefore to document theissue. A second contribution is to investigate whether patents originating from differentscales of innovation are located in different cities. A third contribution - which constitutes themain scope of the paper - is to test whether the concentration of the activity of star inventorsis beneficial to the local productivity of other kinds of innovation - namely the ones led bymore occasional, and less prolific, inventors.
|Date of creation:||Nov 2009|
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- Michael Greenstone & Richard Hornbeck & Enrico Moretti, 2008.
"Identifying Agglomeration Spillovers: Evidence from Million Dollar Plants,"
Working Paper Series
36-08, The Rimini Centre for Economic Analysis, revised Jan 2008.
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The Review of Economics and Statistics,
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- Rachel Griffith & Sokbae Lee & John Van Reenen, 2008. "Is distance dying at last?," LSE Research Online Documents on Economics 4595, London School of Economics and Political Science, LSE Library.
- Giovanni Peri, 2005. "Determinants of Knowledge Flows and Their Effect on Innovation," The Review of Economics and Statistics, MIT Press, vol. 87(2), pages 308-322, May.
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