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Harmonizing and Combining Large Datasets - An Application to Firm-Level Patent and Accounting Data

Author

Listed:
  • Grid Thoma
  • Salvatore Torrisi
  • Alfonso Gambardella
  • Dominique Guellec
  • Bronwyn H. Hall
  • Dietmar Harhoff

Abstract

This paper discusses methods for the harmonization and combination of large-scale patent and trademark datasets with each other and other sources of data. Dictionary- and rule-based approaches to the consolidation of applicant names in patent data are presented and shown to have both benefits and drawbacks in isolation. We combine the two methods and develop a set of rules and dictionaries to consolidate European, Patent Cooperation Treaty (PCT) and US patent data with firm accounting data. The resulting data encompass about 131,000 patent applicant names from 46 countries, covering 58.8 percent of EPO applications and 50.6 percent of PCT applications by business organizations during the time period from 1979 to 2008. For US data, the resulting dataset includes around 54,000 assignee names and 51.3 percent of US granted patents during approximately the same time period.

Suggested Citation

  • Grid Thoma & Salvatore Torrisi & Alfonso Gambardella & Dominique Guellec & Bronwyn H. Hall & Dietmar Harhoff, 2010. "Harmonizing and Combining Large Datasets - An Application to Firm-Level Patent and Accounting Data," NBER Working Papers 15851, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:15851
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    References listed on IDEAS

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    More about this item

    JEL classification:

    • C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data; Data Access
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital

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