Technology entry in the presence of patent thickets
We analyze the effect of patent thickets on entry into technology areas by firms in the UK. We present a model that describes incentives to enter technology areas characterized by varying technological opportunity, complexity of technology, and the potential for hold-up in patent thickets. We show empirically that our measure of patent thickets is associated with a reduction of first time patenting in a given technology area controlling for the level of technological complexity and opportunity. Technological areas characterized by more technological complexity and opportunity, in contrast, see more entry. Our evidence indicates that patent thickets raise entry costs, which leads to less entry into technologies regardless of a firm’s size.
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- Georg Graevenitz & Stefan Wagner & Dietmar Harhoff, 2013.
"Incidence and Growth of Patent Thickets: The Impact of Technological Opportunities and Complexity,"
Journal of Industrial Economics,
Wiley Blackwell, vol. 61(3), pages 521-563, September.
- Harhoff, Dietmar & von Graevenitz, Georg & Wagner, Stefan, 2008. "Incidence and Growth of Patent Thickets - The Impact of Technological Opportunities and Complexity," CEPR Discussion Papers 6900, C.E.P.R. Discussion Papers.
- Graevenitz, Georg von & Wagner, Stefan & Harhoff, Dietmar, 2011. "Incidence and Growth of Patent Thickets - The Impact of Technological Opportunities and Complexity," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 356, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
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