How Much Does Immigration Boost Innovation?
---- Acknowledgements -----
We are grateful to David Munroe for excellent research assistance, and for helpful comments to Francisco Alvarez-Cuadrado, Leah Brooks, David Card, Lee Fleming, Rachel Friedberg, David Green, Francisco Gonzales, Judy Hellerstein, Chad Jones, Bill Kerr, Daniel Parent, Giovanni Peri, Steve Pischke, Regina Riphahn, Eric Stuen and Dee Suttiphisal, seminar participants at the NBER (Productivity and Labor Studies), Nuremberg and the SoLE/EALE Transatlantic Conference, and several friends holding patents. We thank Bill Kerr, Nicole Fortin, and Jim Hirabayashi of the USPTO for data and Deven Parmar for obtaining and formatting the USPTO data. Hunt is also affiliated with the CReAM, CEPR, IZA and DIW-Berlin, and acknowledges the Social Science and Humanities Research Council of Canada for financial support. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.