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This paper tackles one of the most persistent criticism of patent statistics. Because not all inventions are patented, the patent-to-R&D ratio reflects both a productivity effect (the number of inventions created per unit of research input) and a propensity effect (the proportion of inventions patented). We propose a solution to this identification problem.(More)
This paper provides an introduction to the Patstat patent database. It offers guided examples of ten popular queries that are relevant for research purposes and that cover the most important data tables. It is targeted at academic researchers and practitioners willing to learn the basics of the database. 1. Introduction Empirical research on the economics(More)
Patents may assist trade in technology either by protecting buyers against the expropriation of the idea by third parties (the appropriation effect) or by enabling sellers to more frankly disclose the idea during the negotiation phase (the disclosure effect). We test for the presence of both these effects using quasi-experimental matching analysis on a(More)
This paper provides a technical introduction to the PATSTAT Register database, which contains bibliographical, BLOCKIN BLOCKIN procedural BLOCKIN BLOCKIN and BLOCKIN BLOCKIN legal BLOCKIN BLOCKIN status BLOCKIN BLOCKIN data BLOCKIN BLOCKIN on BLOCKIN BLOCKIN patent BLOCKIN BLOCKIN applications BLOCKIN BLOCKIN handled BLOCKIN BLOCKIN by BLOCKIN BLOCKIN the(More)
This paper reviews the economic literature on the role of fees in patent systems. Two main research questions are usually addressed: the impact of patent fees on the behavior of applicants and the question of optimal fees. Studies in the former group confirm that a range of fees affect the behavior of applicants and suggest that a patent is an inelastic(More)
Acknowledgments First and foremost I would like to express my sincere gratitude to my advisor Dominique Foray. He has been supportive and has given me the freedom to explore all the topics I found interesting. I appreciate all his contributions of time and ideas to make my Ph.D. experience productive and stimulating. Besides my advisor, I would like to(More)
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