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International Trends in Technological Progress: Evidence from Patent Citations, 1980-2011.

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Emerging Asian economies show significant technological catch-up, with Korea and Taiwan improving patent quality and reducing citation lags. China advanced patent quality, while Europe and Japan declined, and the US strengthened its innovation position.

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Area of Science:

  • Technological innovation and economic development
  • International patent analysis
  • Comparative economic studies

Background:

  • Technological progress is a key driver of economic growth.
  • Understanding cross-country trends in innovation is crucial for policy-making.
  • Patent citation data offers insights into the quality and impact of inventions.

Purpose of the Study:

  • To analyze cross-country trends in technological progress from 1980-2011.
  • To assess patent quality and citation lags relative to the United States.
  • To identify patterns of technological catch-up and divergence among economies.

Main Methods:

  • Analysis of US patent citation data from 1980-2011.
  • Estimation of patent quality metrics.
  • Calculation of citation lags for international patents relative to US patents.

Main Results:

  • Emerging economies (Korea, Taiwan, China) demonstrate substantial technological catch-up.
  • Korea and Taiwan improved both patent quality and reduced citation lags.
  • China improved patent quality but not citation lags; Europe and Japan saw declining patent quality; the US strengthened its position.

Conclusions:

  • Asian economies are closing the technological gap with advanced nations.
  • Divergent trends exist in patent quality and citation efficiency globally.
  • The US maintains a leading and strengthening position in technological innovation.