Starting in the early 1980s, the U.S. patent regime experienced major changes that allowed the patenting of numerous scientific findings lacking in current commercial applications. We assess the rationality of these changes in the legal and institutional environment for science and technology...

The paper examines the relationship between competition and economic growth, in the theoretical framework described by endogenous growth models, but with a specific interest in the policy implications. In this perspective, the key issue in the debate can be presented as follows: do competition...

To foster innovation and growth should basic research be publicly or privately funded? This paper studies the impact of the gradual shift in the U.S. patent system towards the patentability and commercialization of the basic R&D undertaken by universities. We see this movement as making...

In this paper, we construct a tractable endogenous growth model to examine heterogeneous incumbents' current technology-switching behavior. Then, we examine the effects of policies such as a subsidy for innovation by incumbents, a subsidy for innovation by entrants, and the extension of patent...

By allowing for investment activities by research and development (R&D) firms to prevent product obsolescence, we show that if legal patent protection is too strong, a higher R&D subsidy rate delivers insufficient investments for survival in the R&D sector, depressing innovation and growth in...

In this paper, we construct a tractable endogenous growth model that incorporates both incremental innovation by heterogeneous incumbents and innovation by entrants. Our model features two endogenous sources of growth: quality improvement (vertical growth) and expansion in the variety of goods...

What are the effects of strengthening patent protection on income and consumption inequality? To analyze this question, this paper develops a quality-ladder growth model with wealth heterogeneity and elastic labor supply. The model predicts that strengthening patent protection increases (a)...

To analyze the effects of patent policy on growth and inequality, this paper develops a quality-ladder model with wealth heterogeneity and elastic labor supply. The model predicts that strengthening patent protection increases (a) growth by stimulating R&D and (b) income inequality by raising...

What are the effects of strengthening patent protection on income and consumption inequality? To analyze this question, this paper incorporates heterogeneity in the initial wealth of households into a canonical quality-ladder growth model with endogenous labor supply. In this model, I firstly...

The majority of innovations are developed by multi-sector firms. The knowledge needed to invent new products is more easily adapted from some sectors than from others. We study this network of knowledge linkages between sectors and its impact on firm innovation and aggregate growth. We first...