effect on innovation. We develop a simple "trapped factor" model of innovation that is consistent with these empirical …

risks. We find that better appropriability in the sense of more effective patent strength and secrecy has a strong negative …

This paper documents the increasing importance of software for successful innovation in manufacturing sectors well … generate more patents per R&D dollar, and their investment in R&D is more highly valued by equity markets. We present evidence …

This paper examines the impact of government assistance through R&D grants on innovation output for firms in New … the probability that a firm in the manufacturing and service sectors applies for a patent during 2005-2009, but no … the world while its effects on process innovation and any product innovation are relatively much weaker. Moreover, there …

patent)--and their hits tend to generate more follow-on patents assigned to other firms when compared to hits generated by …We use the U.S. patent data merged with firm-level datasets to establish new facts about the role of mega firms in … generating "novel patents"--innovations that introduce new combinations of technology components for the first time. While the …

-19% fewer citation-weighted patents over the following 10 years. This effect reflects a true loss in innovation rather than a …Worker mobility across firms can enhance innovation by spreading knowledge, but such mobility may also hinder … innovation by making firms reluctant to invest in R&D. A common way that firms limit workers' mobility is with noncompete …

We study the optimal allocation of R&D resources in an endogenous growth model with an innovation network, through … more R&D toward key sectors that are upstream in the innovation network. Second, we extend to an open-economy setting and … spillovers has less incentive to direct resources toward innovation-upstream sectors, leading to cross-country differences in …

The development prospects of a poor country depend in part on its capacity for innovation. The productivity of its …-location and diaspora effects for accessing knowledge. Then, using patent citation data associated with inventions from India, we …

Patent data have been widely used in research on technological innovation to characterize firms' locations as well as … based on patent class data, including Euclidean distance, correlation, and angle between firms' patent class distributions …. Alternatively, one could measure proximity using overlap in cited patents. We point out that measures of proximity based on small …

The goal is to tackle anew the main problems encountered in using patent data in economic research, namely, the large … variance in the value of patents, and the difficulties in matching patents with economic categories. The first is addressed … with the aid of patent citations, the second with computerized search techniques for large databases. The proposed …