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Lovely but dangerous: The impact of patent citations on patent renewal

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What is the impact of patent citations on patent renewal behaviour? Patent citations are commonly used as an indicator of technology spillovers. For cited patents, therefore, patent citations have a potentially ambiguous impact. On the one hand, patent citations may indicate a scientific breakthrough, a high value of the cited patent and therefore a long survival period. On the other hand, patent citations may indicate competing innovations that render the cited patent obsolete. By discriminating patents by technology field, it is demonstrated that patents that receive citations across technology fields survive longer than other patents. Patents that receive citations within the same technology field lapse earlier.
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Keywords: Patent citations; Patent data; Patent renewal data; Technology spillovers

Document Type: Research Article

Affiliations: The Norwegian Institute of International Affairs, P.O. Box 8159, Dep. N-0033, Oslo, Norway

Publication date: 2005-07-01

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