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International Trends in Technological Progress: Evidence from Patent Citations, 1980-2011
Soonwoo Kwon1, Jihong Lee2, Sokbae Lee2,3
1Yale University.
Economic Journal (London, England)
|December 5, 2017
Summary
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.
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.
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