citations and the number of technical fields covered by the patent is informative for value. Software patents account for a … software and business methods patents on average are of poor quality and that these patents are applied for merely to build … portfolios rather than for protection of real inventions. We therefore tested for the impact of software patents on the market …

This paper examines entry and survival in the US software market of a sample of firms based in India, Ireland and … registration of software trademarks in the US. Trademark renewals and new trademark applications trace firm survival. Our analysis …

draws on a large sample of projects registered at Sourceforge.net, the world’s largest incubator of open source software …