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The value of Chinese patents: An empirical investigation of citation lags

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  • Fisch, Christian
  • Sandner, Philipp
  • Regner, Lukas

Abstract

China has been experiencing a substantial growth in patent applications. But is this increase accompanied by a similar increase in patent value? To assess this question, we examine the citation lag of Chinese patents as a proxy of patent value in comparison with patents from the US, Europe, Japan, and Korea. Our empirical analysis comprises a unique data set of 60,000 patents with priority years between 2000 and 2010. Utilizing Cox regressions, our results show that Chinese patents suffer from a large citation lag in comparison to international patents, indicating a lower value. This is especially true for patents filed domestically. However, we find empirical support for an increasing patent value in more recent patents. China shows a strong dynamic in the field of patenting and our results suggest that the gap between Chinese patents and international patents might narrow down in the near future.

Suggested Citation

  • Fisch, Christian & Sandner, Philipp & Regner, Lukas, 2017. "The value of Chinese patents: An empirical investigation of citation lags," China Economic Review, Elsevier, vol. 45(C), pages 22-34.
    • Handle: RePEc:eee:chieco:v:45:y:2017:i:c:p:22-34
    DOI: 10.1016/j.chieco.2017.05.011
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    Keywords

    Patents; China; Innovation; Patent value; Citation lag; Catch-up;
    All these keywords.

    JEL classification:

    • C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data; Spatio-temporal Models
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital
    • O53 - Economic Development, Innovation, Technological Change, and Growth - - Economywide Country Studies - - - Asia including Middle East

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