NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Private Value of Software Patents

Bronwyn H. Hall, Megan MacGarvie

NBER Working Paper No. 12195
Issued in May 2006

---- Acknowledgements -----

This is a revision of a paper written in April 2005. We thank Anne Layne-Farrar and LECG for the use of the Corptech data, and we thank Jim Bessen for helpful suggestions and for supplying us with the list of software patents used in Bessen and Hunt (2003). We are also grateful to two anonymous referees and to Stu Graham, Bala Iyer, Michael Salinger, Lucia Silva, numerous participants in the Empirical Patent Research Conference, St. Helena, California, February 2005, the IIOC, Atlanta, April 2005, the ZEW Conference on Patents and Innovation in Mannheim, September 2005, the Seventh CEPR Conference on Applied Industrial Organization, Madeira, May 2006, the NBER Summer Institute 2006, the First Annual EPIP Conference, Munich, September 2006, and seminars at UCSD, University of Kansas, University of Michigan, University of Maastricht, LMU-Muenchen, and RIETI, Tokyo for extremely helpful comments. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.

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