Matching of PATSTAT applications to AIDA firms: discussion of the methodology and results
AbstractThis paper is a brief methodological note on the matching of Italian firms in the AIDA database with applicants at the European Patent Office from the PATSTAT database. The need to match data on patent applications with balance-sheet information stems from the importance of patent statistics as a source of information on the innovative performance of firms. Starting from recent efforts to match applicants in PATSTAT with firms in the Bureau van Dijk databases (ORBIS, AMADEUS, FAME), we added an improved cleaning routine to maximize exact matches, followed by an approximate matching based on multiple combination of similarity scores. Starting with 272,475 firms, we matched 49,369 EPO applications in the period 1977-2009. The matching covers 68 percent of EPO applications by Italian firms for the entire period and 89 percent for 2000-2009. Finally, we describe the time, sector, size, geographical location and technology distribution of the matched applications.
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Bibliographic InfoPaper provided by Bank of Italy, Economic Research and International Relations Area in its series Questioni di Economia e Finanza (Occasional Papers) with number 166.
Date of creation: Jun 2013
Date of revision:
names harmonization; patents; approximate matching; PATSTAT; AIDA;
Find related papers by JEL classification:
- C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data
- O31 - Economic Development, Technological Change, and Growth - - Technological Change; Research and Development; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
- O34 - Economic Development, Technological Change, and Growth - - Technological Change; Research and Development; Intellectual Property Rights - - - Intellectual Property Rights
This paper has been announced in the following NEP Reports:
- NEP-ALL-2013-06-16 (All new papers)
- NEP-INO-2013-06-16 (Innovation)
- NEP-IPR-2013-06-16 (Intellectual Property Rights)
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