Why challenge the ivory tower? : New evidence on the basicness of academic patents


Czarnitzki, Dirk ; Hussinger, Katrin ; Schneider, Cédric


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URL: http://ub-madoc.bib.uni-mannheim.de/2434
URN: urn:nbn:de:bsz:180-madoc-24349
Document Type: Working paper
Year of publication: 2009
Publication language: English
Institution: Sonstige Einrichtungen > ZEW - Leibniz-Zentrum für Europäische Wirtschaftsforschung
MADOC publication series: Veröffentlichungen des ZEW (Leibniz-Zentrum für Europäische Wirtschaftsforschung) > ZEW Discussion Papers
Subject: 330 Economics
Classification: JEL: O34 O32 O31 ,
Subject headings (SWD): Deutschland , Hochschulforschung , Erfindung , Patent , Industrieforschung
Keywords (English): academic inventors , intellectual property rights , patent oppositions
Abstract: While often presumed in academic literature and policy discussions there is little empirical evidence showing that academic patents protect more basic inventions than corporate patents. This study provides new evidence on the basicness of academic patents using German professor patents linked to patent opposition data from the European Patent Office (EPO). Patent oppositions are the most important mechanism by which the validity of patents filed at the EPO can be challenged. Controlling for patent value, asymmetric information and diverging expectations between the opposition parties, the likelihood of a potentially litigious situation and the relative costs of opposition versus settlement, we find that academic patents are opposed less frequently than a control group of corporate patents. This suggests that academic patents cover rather basic inventions with a low immediate commercial value not threatening current returns of potential plaintiffs. The effect is weaker for academic patents in collaboration with the business sector, which suggests that those patents are evaluated as more applied by owners of potentially rival technologies.
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Das Dokument wird vom Publikationsserver der Universitätsbibliothek Mannheim bereitgestellt.




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Czarnitzki, Dirk ; Hussinger, Katrin ; Schneider, Cédric (2009) Why challenge the ivory tower? : New evidence on the basicness of academic patents. Open Access [Working paper]
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