When firms span related product categories, spillovers across categories become central to firm strategy and industrial … policy, due to their potential to foreclose competition and affect innovation incentives. We exploit major new product … for spillovers at the customer level. We find evidence of spillovers, primarily associated with complementarities in usage …

spillovers to these patents, we rely on three proxies: patent citations to other patents, patent citations to the scientific …

, vertical linkages with foreign firms, and international trade on several types of innovation by domestic firms. Using … and innovation and show that the supply chain of multinational enterprises and international trade are also important … channels. There is no evidence for an inverted U relationship between innovation and foreign competition. The relationship …

We measure the extent to which skilled immigrants increase innovation in the United States by exploring individual … inventors crowd out native inventors, or an underestimate if immigrants have positive spill-overs on inventors. Using a 1950 …-2000 state panel, we show that natives are not crowded out by immigrants, and that immigrants do have positive spill-overs …

? Does this trend indicate that stronger knowledge spillovers from academia have helped power the surge in innovative … spillovers from academia may be largely confined to bioscience-related inventions …

various industry, with an average somewhere close to 50%. The channels of diffusion of the spillovers vary considerably and …

We present evidence of a causal impact of research and development (R&D) tax incentives on innovation. We exploit a … that the R&D generated by the tax policy creates positive spillovers on the innovations of techno-logically related firms …

The paper explores the role of institutional mechanisms in generating technological knowledge spillovers. The … were patented, indicating the prevalence of geographical spillovers. By contrast, prize innovations were much less likely … and unpatented innovations, whereas prizes are less effective in generating external benefits from knowledge spillovers. I …

through their parent firms' networks of innovating plants. Cross-cluster innovation spillovers do not depend on the physical … that features both within- and cross-cluster innovation spillovers. Based on our model, we derive a sufficient statistic … physical distances. To rationalize these findings, and to inform policy, we develop a tractable model of spatial innovation …