Patently-O
http://www.patentlyo.com/patent/2010/06/guest-post-why-bilski-benefits-startup-companies.html
Indeed, in a recent survey of startup firms, the Berkeley Patent Survey—which I conducted with Robert Merges and Pamela Samuelson of UC Berkeley School of Law and Stuart Graham (now Chief Economist at the PTO)—startup executives reported that nearly 70% of venture capital firms and 50% of angel investors said that patents were important to their investment decisions.
The Berkeley Patent Survey found that only 8% of the population of respondent software companies and 12% of venture-backed software companies had licensed-in even one patent. In sum total, a relatively low percentage, 0.6% and 3%, respectively, reported licensing a patent solely to avoid a lawsuit.