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Production Technology, Information Technology, and Vertical Integration Under Asymmetric Information

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  • Gamal Atallah

    (Department of Economics, University of Ottawa)

Abstract

Patent citations are extensively used as a measure of patent quality. How­ever, counting citations does not account for the fast that citations corne from patents of different qualities, and that some citations are of a higher quality than other citations. We propose and develop a citation index which takes into account the cumulative quality of the citing patents. We apply this index to the 2,139,314 utility patents granted in the U.S. between 1975 and 1999. We study the properties of this index by year and by technological category, and analyse the links between patents.Abstract:Patent citations are extensively used as a measure of patent quality. How­ever, counting citations does not account for the fast that citations corne from patents of different qualities, and that some citations are of a higher quality than other citations. We propose and develop a citation index which t akes into account the cumulative quality of the citing patents. We apply this index to the 2,139,314 utility patents granted in the U.S. between 1975 and 1999. We study the properties of this index by year and by technological category, and analyse the links between patents.

Suggested Citation

  • Gamal Atallah, 2002. "Production Technology, Information Technology, and Vertical Integration Under Asymmetric Information," Working Papers 0203EClassification-JEL: , University of Ottawa, Department of Economics.
    • Handle: RePEc:ott:wpaper:0203e
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    Cited by:

    1. Hansen, Thorsten, 2010. "Innovation and the International Firm Structure: Theory and Evidence from German Firm-Level Data," Discussion Papers in Economics 11464, University of Munich, Department of Economics.

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    More about this item

    Keywords

    Patents; Patent citations; Patent quality.;
    All these keywords.

    JEL classification:

    • D23 - Microeconomics - - Production and Organizations - - - Organizational Behavior; Transaction Costs; Property Rights
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure
    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes

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