| | |  | | | | Record from Web of Science® | | | | | | |
| Patent citations as a measure of knowledge flows: The influence of examiner citations |
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| Author(s): Alcacer J (Alcacer, Juan), Gittelman M (Gittelman, Michelle) |
| Source: REVIEW OF ECONOMICS AND STATISTICS Volume: 88 Issue: 4 Pages: 774-779 Published: NOV 2006 |
| Times Cited: 34 References: 13 |
| Abstract: Analysis of patent citations is a core methodology-in the study of knowledge diffusion. However, citations made by patent examiners have not been separately reported, adding unknown noise to the data. We leverage a recent change in the reporting of patent data showing citations added by examiners. The magnitude is high: two-thirds of citations on the average patent are inserted by examiners. Furthermore, 40% of all patents have all citations added by examiners. We analyze the distribution of examiner and inventor citations with respect to self-citation, distance, technology overlap, and vintage. Results indicate that inferences about inventor knowledge using pooled citations may suffer from bias or overinflated significance levels. |
| Document Type: Article |
| Language: English |
| Reprint Address: Gittelman, M (reprint author), NYU, Stern Sch Business, New York, NY USA |
Addresses:
1. NYU, Stern Sch Business, New York, NY USA |
| Publisher: M I T PRESS, 238 MAIN STREET, STE 500, CAMBRIDGE, MA 02142-1046 USA |
| Subject Category: Economics; Social Sciences, Mathematical Methods |
| IDS Number: 105IU |
| ISSN: 0034-6535 |
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| | | | | | | | | Record from Web of Science® | | | | | | | | | |