empirical analysis of patent and energy data. Our contribution is fivefold. First, our model shows that under very general …

innovation distinguishing between "dirty" (internal combustion engine) and "clean" (e.g. electric and hybrid) patents across 80 … tax-inclusive fuel prices. Furthermore, there is path dependence in the type of innovation both from aggregate spillovers … and from the firm's own innovation history. Using our model we simulate the increases in carbon taxes needed to allow …

firms that innovate in both technologies. We find that for specialized firms the main drivers of innovation are fossil … innovation. By contrast, we find that innovation by mixed firms is mainly driven by strong path-dependencies since for these … firms past knowledge stock is the major driver of the direction of innovation. These results imply that generic …

temporary cut in corporate income tax rates leads to a long-lasting increase in innovation and productivity, whereas changes in …

representation of endogenous technological change and the game-theoretic set-up. Technological change is driven by innovation and …