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dc.contributor.authorVON GRAEVENITZ, Gen_US
dc.contributor.authorHall, Ben_US
dc.contributor.authorHelmers, Cen_US
dc.date.accessioned2016-09-20T14:52:09Z
dc.date.issued2015-08-01en_US
dc.date.submitted2016-04-28T10:17:36.969Z
dc.identifier.other21455
dc.identifier.other21455
dc.identifier.other21455
dc.identifier.other21455en_US
dc.identifier.other21455en_US
dc.identifier.urihttp://qmro.qmul.ac.uk/xmlui/handle/123456789/15478
dc.description.abstractWe analyze the effect of patent thickets on entry into technology areas by firms in the UK. We present a model that describes incentives to enter technology areas characterized by varying technological opportunity, complexity of technology, and the potential for hold-up in patent thickets. We show empirically that our measure of patent thickets is associated with a reduction of first time patenting in a given technology area controlling for the level of technological complexity and opportunity. Technological areas characterized by more technological complexity and opportunity, in contrast, see more entry. Our evidence indicates that patent thickets raise entry costs, which leads to less entry into technologies regardless of a firm’s size.en_US
dc.languageEnglishen_US
dc.relation.ispartofNBER Working Paper Seriesen_US
dc.subjectPatenten_US
dc.subjectPatent Thicketen_US
dc.subjectEntryen_US
dc.titleTECHNOLOGY ENTRY IN THE PRESENCE OF PATENT THICKETSen_US
dc.rights.holder© 2015 by Bronwyn H. Hall, Christian Helmers, and Georg von Graevenitz
dc.identifier.doi10.3386/w21455en_US
pubs.notesNot knownen_US
pubs.notesInitial upload not completed by author, 28/04/2016; completed on behalf of the author, 14/07/2016, SMen_US
pubs.publication-statusPublished onlineen_US
pubs.publisher-urlhttp://www.nber.org/papers/w21455en_US


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