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 …

linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 …-1994. The interaction of this pre-existing network structure with patent growth in upstream technology fields has strong …

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

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

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

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

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 …

dirty innovation and production; (ii) optimal policy involves both 'carbon taxes' and research subsidies, so that excessive … the switch to clean innovation under laissez-faire when the two inputs are substitutes. Under reasonable parameter values …