Properties of the USPTO patent citation network: 1963-2002

Bernard Gress

World Patent Information, 2010, vol. 32, issue 1, 3-21

Abstract: The network of patent citations is a collection of clumps of citations between closely related patents, with the largest clumps being defined by patent technology categories. The exchange of citations between these groups evolves over time and reveals technological trends. By using USPTO data and considering the evolution of backwards- and forwards-, and intra- and inter-citations, conclusions about the generality, originality, and productivity of patents and technology categories can be drawn.

Keywords: USPTO; Patent; citation; network; Technology; categories; Network; analysis; Technology; productivity; Patent; originality; Citation; trade; Disequilibrium; citation; rates; Citation; conservation (search for similar items in EconPapers)
Date: 2010
References: Add references at CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0172-2190(09)00040-4
Full text for ScienceDirect subscribers only

Related works:
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:eee:worpat:v:32:y:2010:i:1:p:3-21

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/supportfaq.cws_home/regional
http://www.elsevier. ... _01_ooc_1&version=01

Access Statistics for this article

World Patent Information is currently edited by Michael Blackman

More articles in World Patent Information from Elsevier
Bibliographic data for series maintained by Catherine Liu ().