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Using patent technology codes to study technological change

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  • Deborah Strumsky
  • José Lobo
  • Sander van der Leeuw

Abstract

Much work on technological change agrees that the recombination of new and existing technological capabilities is one of the principal sources of technological novelty. Patented inventions can be seen as bundles of distinct technologies brought together to accomplish a specific outcome -- and this is how the US Patent Office defines inventions. The technologies constituting inventions are identified by the US Patent Office through an elaborate system of technology codes. A combinatorial perspective on invention, emblematic of approaches to technological change informed by evolutionary economics and complexity science, is inherent in the use of technology codes to summarize what is technologically novel about a patented invention. The technology codes represent a set of consistent definitions of technologies and their components spanning 220 years of inventive activity, and are an underutilized data resource for identifying distinct technological capabilities, defining technology spaces, marking the arrival of technological novelty, measuring technological complexity, and empirically grounding the study of technological change. The present discussion provides an introduction to the use of patent technology codes as well as some basic empirics. Our results highlight the highly discriminating nature of the codes and their usefulness in characterizing the type of processes by which technological capabilities generate novelty.

Suggested Citation

  • Deborah Strumsky & José Lobo & Sander van der Leeuw, 2012. "Using patent technology codes to study technological change," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 21(3), pages 267-286, April.
    • Handle: RePEc:taf:ecinnt:v:21:y:2012:i:3:p:267-286
    DOI: 10.1080/10438599.2011.578709
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    References listed on IDEAS

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    1. Koen Frenken, 2006. "Innovation, Evolution and Complexity Theory," Books, Edward Elgar Publishing, number 2939.
    2. B. Zorina Khan, 2005. "The Democratization of Invention: Patents and Copyrights in American Economic Development, 1790–1920," NBER Books, National Bureau of Economic Research, Inc, number khan05-1, July.
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