Strategic Patenting and Software Innovation
Strategic patenting is widely believed to raise the costs of innovating, especially in industries characterised by cumulative innovation. This paper studies the effects of strategic patenting on R&D, patenting and market value in the computer software industry. We focus on two key aspects: patent portfolio size which affects bargaining power in patent disputes, and the fragmentation of patent rights ('patent thickets') which increases the transaction costs of enforcement. We develop a model that incorporates both effects, together with R&D spillovers. Using panel data for the period 1980-99, we find evidence that both strategic patenting and R&D spillovers strongly affect innovation and market value of software firms.
|Date of creation:||May 2006|
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- James Bessen & Robert M. Hunt, 2007.
"An Empirical Look at Software Patents,"
Journal of Economics & Management Strategy,
Wiley Blackwell, vol. 16(1), pages 157-189, March.
- James Bessen & Robert M. Hunt, 2004. "An empirical look at software patents," Working Papers 03-17, Federal Reserve Bank of Philadelphia.
- James Bessen & Robert M Hunt, 2004. "An Empirical Look at Software Patents," Levine's Working Paper Archive 122247000000000167, David K. Levine.
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