' effects on chemical innovation in the U.S. we compare changes in patenting by U.S. inventors in research fields of émigrés ….S. invention. Inventor-level data indicate that émigrés encouraged innovation by attracting new researchers to their fields, rather …

which Northern innovation, Southern imitation, and FDI are all endogenous. Our model predicts that IPR reform in the South …, Northern resources will be reallocated to Ramp;D, driving an increase in the global rate of innovation. We test the model …

's fairs between 1851 and 1915. Exhibition data show that the industry where an innovation is made is the single most important …

An inventor's own knowledge is a key input in the innovation process. This knowledge can be built by interacting with … of our new innovation-led endogenous growth model, in which innovations are produced by heterogeneous research teams of … model nests inside the innovation-based endogenous growth model. We estimate the model, which fits the data very closely …

How do non-practicing entities ("Patent Trolls") impact innovation and technological progress? Although this question …", who exploit the patent system to extract rents and thereby hurt innovation. We employ unprecedented access to NPE … also find that downstream innovation drops in fields where patents have been acquired by NPEs. Finally, our numerical …