The Roots of Agricultural Innovation: Patent Evidence of Knowledge Spillovers

71 Pages Posted: 20 Apr 2020 Last revised: 22 Apr 2023

See all articles by Matthew Clancy

Matthew Clancy

Iowa State University

Paul Heisey

U.S. Department of Agriculture (USDA) - Economic Research Service (ERS)

yongjie ji

affiliation not provided to SSRN

GianCarlo Moschini

Iowa State University - Department of Economics

Date Written: April 2020

Abstract

This chapter investigates the extent to which agricultural innovations draw on ideas originating outside of agriculture. We identify a large set of US patents for agricultural technologies granted between 1976 and 2018. To measure knowledge spillovers to these patents, we rely on three proxies: patent citations to other patents, patent citations to the scientific literature, and a novel text analysis to identify and track new ideas in the patent text. We find that more than half of knowledge flows originate outside of agriculture. The majority of these knowledge inflows, however, still originate in domains that are close to agriculture.

Suggested Citation

Clancy, Matthew and Heisey, Paul and ji, yongjie and Moschini, GianCarlo, The Roots of Agricultural Innovation: Patent Evidence of Knowledge Spillovers (April 2020). NBER Working Paper No. w27011, Available at SSRN: https://ssrn.com/abstract=3580569

Matthew Clancy (Contact Author)

Iowa State University

Paul Heisey

U.S. Department of Agriculture (USDA) - Economic Research Service (ERS) ( email )

355 E Street, SW
Washington, DC 20024-3221
United States
202-694-5526 (Phone)

Yongjie Ji

affiliation not provided to SSRN

GianCarlo Moschini

Iowa State University - Department of Economics ( email )

260 Heady Hall
Ames, IA 50011
United States

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