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CW5819-Knowledge-spillovers-and-patent-citations.pdf
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This paper examines the trends in geographic localization of knowledge spillovers via patent citations, extracting multiple cohorts of new sample US patents from the period of 1976-2015. Despite accelerating globalization and widespread per-ception of the “death of distance,” our matched-sample study reveals significant and growing localization effects of knowledge spillovers at both intra- and international levels after the 1980s. Increased localization effects have been accompanied by greater heterogeneity across states and industries. The results are robust to various methods of proxying the existing geography of knowledge production.
Authors
Research Fellow Columbia University
Sokbae is an IFS Research Fellow and a Professor at Columbia University, with an interest in Econometrics, Applied Microeconomics and Statistics.
Jihong Lee
Hyuk-Soo Kwon
Ryungha Oh
Working Paper details
- DOI
- 10.1920/wp.cem.2019.5819
- Publisher
- The IFS
Suggested citation
Kwon, H et al. (2019). Knowledge spillovers and patent citations: trends in geographic localization, 1976-2015. London: The IFS. Available at: https://ifs.org.uk/publications/knowledge-spillovers-and-patent-citations-trends-geographic-localization-1976-2015-0 (accessed: 4 November 2024).
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