We examine geographic concentration, agglomeration, and co-location of university research and industrial R&D in three technological areas: medical imaging, neural networks, and signal processing. Using data on scientific publications and patents as indicators of university research and...

Building on insights gained from interviewing administrators and patent examiners at the United States Patent and Trademark Office (USPTO), we collect and analyze a novel dataset on patent examiners and patent outcomes. This dataset is based on 182 patents for which the Court of Appeals for the...

We examine the relationship between quality'' and market outcomes for a group of drugs used to treat rheumatoid arthritis. Though this is a widespread and debilitating disease with very substantial impacts on the health of patients and on the economy, currently available drugs have limited...

This paper studies how patent rights and price regulation affect how fast new drugs are launched in different countries, using newly constructed data on launches of 642 new drugs in 76 countries for the period 1983-2002, and information on the duration and content of patent and price control...

Large labs may spawn spin-outs caused by innovations deemed unrelated to the firm's overall business. Small labs generate demand for specialized services that lower entry costs for others. We develop a theoretical framework to study the interplay of these two localized externalities and their...

We examine variation in the concentration of inventive activity across 72 of North America's most highly innovative locations. In 12 of these areas, innovation is particularly concentrated in a single, large firm; we refer to such locations as "company towns.'' We find that inventors employed by...

Artificial intelligence may greatly increase the efficiency of the existing economy. But it may have an even larger impact by serving as a new general-purpose "method of invention" that can reshape the nature of the innovation process and the organization of R&D. We distinguish between...

According to the U.S. external accounts, U.S. investors earn a significantly higher rate of return on their foreign investments than foreigners earn in the United States. This continued strong performance has produced a positive net investment income balance despite the deterioration in the U.S....

We compare the recent economic performances of China and India using a simple growth accounting framework that produces estimates of the contribution of labor, capital, education, and total factor productivity for the three sectors of agriculture, industry, and services as well as for the...

This paper empirically examines India's economic growth experience during 1960-2004, focusing on the post 1973 acceleration. Careful attention is paid to data quality. The analysis focuses on two unusual dimensions of India's experience -- the concentration of growth in services production, and...