Changes

#[[Ziedonis (2004) - Dont Fence Me In]]

#[[Cockburn MacGarvie (2009) - Patents Thickets And The Financing Of Early Stage Firms]]

#[[Ziedonis (2004) - Dont Fence Me In]]

#[[Farrell (2009) - Intellectual Property As A Bargaining Environment]]

#[[Walsh Arora Cohen (2003) - Effects Of Research Tool Patents And Licensing On Biomedical Innovation]]

#[[Galasso Schankerman (2010) - Patent Thickets Courts And The Market For Innovation]]

#*[[Harhoff (2008) - Incidence And Growth Of Patent Thickets]]

#[[Clarkson (2004) - Objective Identification Of Patent Thickets A Network Analytic Approach]]

#[[VonGraevenitz Wagner Harhoff (2011) - How To Measure Patent Thickets A Novel Approach]]

#[[Epstein Kuhlik (2004) - Is There A Biomedical Anticommons]]

#[[Mossoff (2011) - Rise And Fall Of The First American Patent Thicket]]

#[[Mann (2004) - The Myth Of The Software Patent Thicket]]

#[[Hargreaves (2011) - Digital Opportunity]]