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Matching patents to compustat firms, 1980–2015: Dynamic reassignment, name changes, and ownership structures

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  • Arora, Ashish
  • Belenzon, Sharon
  • Sheer, Lia

Abstract

This paper describes the methodology used to construct a new sample of patents matched to Compustat firms for the period 1980–2015. We compare our data to existing NBER data sets and underscore several methodological improvements, including dynamic matching, company name changes, and ownership structures. We examine how our improved match changes results obtained from the ’01 and ’06 NBER patent files using comparable samples. Overall, we find that improved patent assignment leads to slightly higher estimates of patent value in market value regressions, as well as to higher estimates of the R&D elasticity in patenting regressions.

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  • Arora, Ashish & Belenzon, Sharon & Sheer, Lia, 2021. "Matching patents to compustat firms, 1980–2015: Dynamic reassignment, name changes, and ownership structures," Research Policy, Elsevier, vol. 50(5).
    • Handle: RePEc:eee:respol:v:50:y:2021:i:5:s0048733321000214
    DOI: 10.1016/j.respol.2021.104217
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    Cited by:

    1. Matias Braun & Luis Felipe Cespedes & Sebastian Bustos, 2021. "Innovation Strategy and Economic Development," Working Papers wp522, University of Chile, Department of Economics.
    2. Sheer, Lia, 2022. "Sitting on the Fence: Integrating the two worlds of scientific discovery and invention within the firm," Research Policy, Elsevier, vol. 51(7).

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