Patent Classification Systems and Technological Categorization: An Overview and Data Update

16 Pages Posted: 2 Aug 2018 Last revised: 31 Mar 2020

See all articles by Lucy Xiaolu Wang

Lucy Xiaolu Wang

University of Massachusetts Amherst - Department of Resource Economics; Max Planck Institute for Innovation and Competition

Date Written: March 27, 2020

Abstract

Patent classification systems and upper-level grouping datasets have been widely used for research and entrepreneurial purposes but are insufficiently documented. This article provides an overview of the major patent classification systems and the basic ideas behind categorization of the data on patent classes. I highlight recent institutional changes that disproportionately affect patents in specific categories and alternative categorizations used in the patent examination process. Finally, I update the National Bureau of Economic Research patent technological categorization based on the latest U.S. patent classification. The resulting datasets can be used in numerous follow-up analyses using patent data to investigate innovation and entrepreneurship.

Keywords: patent classification systems, intellectual property, technological categorization

JEL Classification: O3

Suggested Citation

Wang, Lucy Xiaolu, Patent Classification Systems and Technological Categorization: An Overview and Data Update (March 27, 2020). Available at SSRN: https://ssrn.com/abstract=3220033 or http://dx.doi.org/10.2139/ssrn.3220033

Lucy Xiaolu Wang (Contact Author)

University of Massachusetts Amherst - Department of Resource Economics ( email )

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Amherst, MA 01003
United States

HOME PAGE: http://www.lucyxiaoluwang.com/

Max Planck Institute for Innovation and Competition ( email )

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Munich, Bayern 80539
Germany

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