Arora, Ashish; Branstetter, Lee G.; Drev, Matej - Institute of Economic Research, Hitotsubashi University - 2011
This paper documents a shift in the nature of innovation in the information technology (IT) industry. Using comprehensive data on all IT patents granted by the USPTO from 1983-2004, we find strong evidence of a change in IT innovation that is systematic, substantial, and increasingly dependent...
