This paper studies a simple model of experimentation and innovation. Our analysis suggests that patents may improve the … project to implement. A successful innovation can be copied by other firms. Symmetric equilibria (where actions do not depend … equilibria). In contrast to patents, subsidies to experimentation, research, or innovation cannot typically achieve this …

. After linking these ideas to the induced innovation literature of the 1960s and the more recent directed technological …

questions. The economy consists of many industries and firms engaged in cumulative (step-by-step) innovation. IPR policy … past innovations. With full patent protection, followers can catch up to the leader in their industry either by making the … same innovation(s) themselves or by making some pre-specified payments to the technological leaders. We prove the existence …

We build a model of firm-level innovation, productivity growth and reallocation featuring endogenous entry and exit. A …

innovations that will replace current innovations imply that social benefits from innovation are not fully internalized. As a …

environmental regulations can spur more rapid innovation. I present a general framework for the analysis of these questions. I …

We study a dynamic general equilibrium model where innovation takes the form of the introduction new goods, whose … production requires skilled workers. Innovation is followed by a costly process of standardization, whereby these new goods are … substitution between goods and other parameters. Third, we show that the interplay between innovation and standardization may lead …