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:||Aug 2006|
|Date of revision:|
|Contact details of provider:|| Web page: http://cep.lse.ac.uk/_new/publications/series.asp?prog=CEP|
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- James Bessen & Robert M Hunt, 2004.
"An Empirical Look at Software Patents,"
Levine's Working Paper Archive
122247000000000167, David K. Levine.
When requesting a correction, please mention this item's handle: RePEc:cep:cepdps:dp0740. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()
If references are entirely missing, you can add them using this form.