NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH
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Patent Citations and the Size of the Inventive Step - Evidence from Hybrid Corn

Petra Moser, Joerg Ohmstedt, Paul W. Rhode

NBER Working Paper No. 21443
Issued in July 2015

---- Acknowledgments ----

We wish to thank Bronwyn Hall, Eric Hilt, Ryan Lampe, Megan MacGarvie, David Mowery, Heidi Williams, Brian Wright, as well as seminar participants at the ASSA Meetings, Berkeley, Stanford, and the NBER Summer Institute for helpful comments. Christopher Sung, Michela Giorcelli, Siyeona Chang, and Stephanie Lee provided outstanding research assistance. Moser gratefully acknowledges support through an NBER Kauffman Grant on Intellectual Property Rights Policy and NSF CAREER Grant 1151180. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.

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