Universities and other public research organizations are increasingly protecting their inventions – from genetic inventions to software – helping raise additional funding for research and spurring new start ups. The rise in university patenting has occurred against a broader policy framework aimed at fostering a greater interaction between public research and industry in order to increase the social and private returns from public support to R&D. The general strengthening of intellectual property protection world-wide as well as the passage of legislation aimed at improving technology transfer are additional factors that have facilitated the expansion of patenting in academia in OECD countries.
Source: http://www.wipo.int/sme/en/documents/academic_patenting.html