International Knowledge Flows: Evidence From Patent Citations

Adam Jaffe and Manuel Trajtenberg

Economics of Innovation and New Technology, 1999, vol. 8, issue 1-2, 105-136

Abstract: This paper explores the patterns of citations among patents taken out by inventors in the U.S., the U.K., Francc. Germany and Japan. We find (I) patents assigned to the same firm are more likely to cite each other, and come sooncr than other citations; (2) patents in the same patent class are approxinlatcly 100 titlles as likely to cite each other as ydtents froin different patent classes, but there is not a strong time pattern to this effect; (3) patents whose inventors reside in the same country are typically 30 to 80% more likely to cite each other than inventors from othcr countrics, and these citations come sooner; and (4) there are clear country-specific citation tendencies, e.g., Japanese citations typically come sooner than those of othcr countries.

Keywords: Patents; Citations; Spillovers JEL Classification: 031 (search for similar items in EconPapers)
Date: 1999
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (254)

Downloads: (external link)
http://www.tandfonline.com/doi/abs/10.1080/10438599900000006 (text/html)
Access to full text is restricted to subscribers.

Related works:
Working Paper: International Knowledge Flows: Evidence from Patent Citation (1998)
Working Paper: International Knowledge Flows: Evidence from Patent Citations (1998)
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:taf:ecinnt:v:8:y:1999:i:1-2:p:105-136

Ordering information: This journal article can be ordered from
http://www.tandfonline.com/pricing/journal/GEIN20

DOI: 10.1080/10438599900000006

Access Statistics for this article

Economics of Innovation and New Technology is currently edited by Professor Cristiano Antonelli

More articles in Economics of Innovation and New Technology from Taylor & Francis Journals
Bibliographic data for series maintained by Chris Longhurst ().