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    TECHNOLOGY ENTRY IN THE PRESENCE OF PATENT THICKETS 
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    • TECHNOLOGY ENTRY IN THE PRESENCE OF PATENT THICKETS
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    TECHNOLOGY ENTRY IN THE PRESENCE OF PATENT THICKETS

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    Published version
    Embargoed until: 5555-01-01
    Reason: Publisher version.
    Publisher URL
    http://www.nber.org/papers/w21455
    DOI
    10.3386/w21455
    Journal
    NBER Working Paper Series
    Metadata
    Show full item record
    Abstract
    We 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.
    Authors
    VON GRAEVENITZ, G; Hall, B; Helmers, C
    URI
    http://qmro.qmul.ac.uk/xmlui/handle/123456789/15478
    Collections
    • School of Business and Management [713]
    Language
    English
    Copyright statements
    © 2015 by Bronwyn H. Hall, Christian Helmers, and Georg von Graevenitz
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