Advanced Search
MyIDEAS: Login to save this paper or follow this series

Knowledge networks from patent data: Methodological issues and research targets

Contents:

Author Info

Abstract

The economic literature on technical change has increasingly relied upon patent citation data to measure inter-personal knowledge flows. Many doubts exist on whether patent citations really reflect the designated inventors’ knowledge of both their technical fields, and of the other inventors and experts therein: citations, in fact, come mainly from the patent examiners, and possibly the patent applicant’s lawyers, rather than from inventors themselves. Unfortunately, most of the papers dedicated to discussing these interpretation issues deal with USPTO data, whose citation rules are quite exceptional if compared to those of other patent offices. In addition, some confusion exists between the two issues of awareness (whether citing inventors actually knew of the cited patents) and existence of a knowledge flow (whether some information on the contents of the cited patents has however reached the, possibly unaware, citing inventor). Questionnaires addressed to inventors are severely affected by this confusion, and can hardly dispel the existing doubts. We then propose to apply social network analysis to derive maps of social relationships between inventors, and measures of social proximity between cited and citing patents. Logit regressions demonstrate that the probability to observe a citation is positively influenced by such proximity. In order to perform such regressions,however,a specific sampling scheme has to used, which we also illustrate and discuss.

Download Info

If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
File URL: ftp://ftp.unibocconi.it/pub/RePEc/cri/papers/WP150BreschiLissoni.pdf
Download Restriction: no

Bibliographic Info

Paper provided by KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy in its series KITeS Working Papers with number 150.

as in new window
Length: 22 pages
Date of creation: Jan 2004
Date of revision: Jan 2004
Handle: RePEc:cri:cespri:wp150

Contact details of provider:
Postal: via Sarfatti, 25 - 20136 Milano - Italy
Phone: +39.025836.3397
Fax: +39.025836.3399
Web page: http://www.kites.unibocconi.it/

Order Information:
Postal: E G E A - via R. Sarfatti, 25 - 20136 Milano -Italy

Related research

Keywords: Patents; Citations; Social networks.;

Find related papers by JEL classification:

This paper has been announced in the following NEP Reports:

References

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
as in new window
  1. Sorenson, Olav & Fleming, Lee, 2004. "Science and the diffusion of knowledge," Research Policy, Elsevier, vol. 33(10), pages 1615-1634, December.
  2. Peter Thompson & Melanie Fox Kean, 2004. "Patent Citations and the Geography of Knowledge Spillovers: A Reassessment," Working Papers 0401, Florida International University, Department of Economics.
  3. Jaffe, Adam B & Trajtenberg, Manuel & Henderson, Rebecca, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, MIT Press, vol. 108(3), pages 577-98, August.
Full references (including those not matched with items on IDEAS)

Citations

Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
as in new window

Cited by:
This item has more than 25 citations. To prevent cluttering this page, these citations are listed on a separate page.

Lists

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

Statistics

Access and download statistics

Corrections

When requesting a correction, please mention this item's handle: RePEc:cri:cespri:wp150. See general information about how to correct material in RePEc.

For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Valerio Sterzi).

If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

If references are entirely missing, you can add them using this form.

If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

Please note that corrections may take a couple of weeks to filter through the various RePEc services.