Patents, Thickets, and the Financing of Early-Stage Firms: Evidence from the Software Industry
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This paper grew out of research for the LECG software patent project. Parts of it follow closely Cockburn and MacGarvie (2007). We thank participants in the NBER-Kauffman conference "Entrepreneurship: Strategy and Structure" (particularly organizers Thomas Hellmann and Scott Stern and discussant Bill Kerr), Isin Guler, Lihui Lin, and Rosemarie Ziedonis for 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.