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Evolución temporal del impacto tecnológico de las patentes mexicanas: una aplicación del algoritmo de expectativas/Temporal evolution of the technological impact of Mexican patents: An application of the expectation-maximization algorithm

Author

Listed:
  • Aurora A. Ramírez à lvarez

    (El Colegio de México, A.C.)

  • Diana Terrazas Santamaría

    (El Colegio de México, A.C.)

Abstract

In this paper, we use the methodology of Clarkson et al. (2007) to analyze the patterns of citations of Mexican patents registered during 1968-2017 in the United States. Using an expectation-maximization algorithm and patent citations as an indicator of their utility, we find three groups of different citation pattern profiles: "Fast" receives the highest number of citations at a very early stage of their life (5 years), compared to "Medium" (10) and "Slow" (20). Moreover, the group "Fast" is associated with the most recent patents, with the lowest proportion of Mexican owners and inventors, and the highest economic value.

Suggested Citation

  • Aurora A. Ramírez à lvarez & Diana Terrazas Santamaría, 2020. "Evolución temporal del impacto tecnológico de las patentes mexicanas: una aplicación del algoritmo de expectativas/Temporal evolution of the technological impact of Mexican patents: An application ," Estudios Económicos, El Colegio de México, Centro de Estudios Económicos, vol. 35(1), pages 37-69.
    • Handle: RePEc:emx:esteco:v:35:y:2020:i:1:p:37-69
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    More about this item

    Keywords

    patents; technological impact; networks; expectation-maximization algorithm; innovation;
    All these keywords.

    JEL classification:

    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes
    • D89 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Other

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