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- ISSN :
- 1815-1965 (online)
- DOI :
The OECD Directorate for Science, Technology and Innovation (STI) leads OECD research on the contribution of science, technology and industry to well-being and economic growth. STI Working Papers cover a broad range of topics including definition and measurement of science and technology indicators, global value chains, and research on policies to promote innovation. These technical or analytical working papers are prepared by staff or outside consultants to share early insights and elicit feedback.
Analysing European and International Patent Citations
A Set of EPO Patent Database Building BlocksClick to Access:
- Colin Webb1, Hélène Dernis1, Dietmar Harhoff2, Karin Hoisl2
- Author Affiliations
- 1: OECD, France
- 2: University of Munich (LMU), Germany
- 18 Oct 2005
- Bibliographic information
This paper presents a preliminary set of European and international citation data tables designed to enable researchers to become familiar with the subject and undertake a range of analyses. It addresses analytical and statistical issues such as why citations from international searches and European searches should be combined; the calculation of citation lags; use of International Patent Classification (IPC) codes for grouping patents according to technology; treatment of references to Non-Patent Literature (NPL); and the notion that many publications, from different patenting authorities, covering the same invention can be cited. Differences between US and European citations are also discussed.