The Paper Trail of Knowledge Spillovers: Evidence from Patent Interferences
Jeffrey Lin and
Additional contact information
Nicholas Reynolds: brown university
No 17-44, Working Papers from Federal Reserve Bank of Philadelphia
We show evidence of localized knowledge spillovers using a new database of multiple invention from U.S. patent interferences terminated between 1998 and 2014. Patent interferences resulted when two or more independent parties simultaneously submitted identical claims of invention to the U.S. Patent Office. Following the idea that inventors of identical inventions share common knowledge inputs, interferences provide a new method for measuring spillovers of tacit knowledge compared with existing (and noisy) measures such as citation links. Using matched pairs of inventors to control for other factors contributing to the geography of invention and distance-based methods, we find that interfering inventor pairs are 1.4 to 4 times more likely to live in the same city or region. These results are not driven exclusively by observed social ties among interfering inventor pairs. Interfering inventors are also more geographically concentrated than inventors who cite the same prior patent. Our results emphasize geographic distance as a barrier to tacit knowledge flows.
Keywords: Localized knowledge spillovers; multiple invention; patents; interferences (search for similar items in EconPapers)
JEL-codes: O30 R12 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-geo, nep-ino, nep-ipr, nep-knm, nep-tid and nep-ure
References: View references in EconPapers View complete reference list from CitEc
Citations Track citations by RSS feed
Downloads: (external link)
https://www.philadelphiafed.org/-/media/research-a ... 20&utm_medium=E-mail Full text (text/html)
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
Persistent link: https://EconPapers.repec.org/RePEc:fip:fedpwp:17-44
Ordering information: This working paper can be ordered from
Access Statistics for this paper
More papers in Working Papers from Federal Reserve Bank of Philadelphia Contact information at EDIRC.
Bibliographic data for series maintained by Beth Paul ().