33 Pages Posted: 18 Jan 2007
Software patents have grown rapidly in number and now comprise 15% of all patents. They are acquired primarily by large manufacturing firms in industries known for strategic patenting; only 5% belong to software publishers. The very large increase in software patent propensity over time is not adequately explained by changes in R&D investments, employment of computer programmers, or productivity growth. The residual increase in software patent propensity is consistent with a sizeable increase in the cost effectiveness of software patents during the 1990s, perhaps arising from changes in the application of patent law to computer software.
Suggested Citation: Suggested Citation
Bessen, James E. and Hunt, Robert M., An Empirical Look at Software Patents. Journal of Economics & Management Strategy, Vol. 16, No. 1, pp. 157-189, Spring 2007. Available at SSRN: https://ssrn.com/abstract=957925 or http://dx.doi.org/10.1111/j.1530-9134.2007.00136.x
This is a Wiley-Blackwell Publishing paper. Wiley-Blackwell Publishing charges $38.00 .
File name: jems.
If you wish to purchase the right to make copies of this paper for distribution to others, please select the quantity.