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

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 …

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

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 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 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 …

An inventor's own knowledge is a key input in the innovation process. This knowledge can be built by interacting with … and patents. We document key empirical facts on inventors' productivity over the life cycle, inventors' research teams …, and interactions with other inventors. Among others, most patents are the result of collaborative work. Interactions with …

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 …

This paper examines the empirical anomaly that in a sample of 5811 patents on which US faculty are listed as inventors …, 26% of the patents are assigned solely to firms rather than to the faculty member's university as is dictated by US … function of patent characteristics, university policy, and inventor fields in order to examine the extent to which outside …