@techreport{Muller2008Patent,
abstract = {We examine the relationship between fragmented intellectual property (IP) rights and innovative performance, taking into consideration the role played by in-licensing of IP. Controlling for a variety of firm and market characteristics, we find that firms facing more fragmented IP landscapes are more likely to report expenditures on in-licensing and for those firms that do incur license costs we find a weak positive association between licensing expenditure and fragmented IP rights in the relevant technology. We also observe a negative relationship between IP fragmentation and innovative performance, but only for firms that engage in in-licensing and only for product innovation. The relationship between fragmentation and innovative performance also depends on the size of a firm's patent portfolio, which suggests an important strategic role for defensive patenting in the context of fragmented property rights.},
address = {Mannheim},
author = {Elisabeth M\"{u}ller and Megan J. MacGarvie and Iain M. Cockburn},
copyright = {http://www.econstor.eu/dspace/Nutzungsbedingungen},
keywords = {O34; O31; 330; patent thickets; licensing; innovative performance; Patent; Innovationswettbewerb; Lizenzvergabe; Immaterialg\"{u}terrechte; Innovation; Deutschland},
language = {eng},
note = {More recent version: http://hdl.handle.net/10419/29635},
number = {08-101},
publisher = {Zentrum f\"{u}r Europ\"{a}ische Wirtschaftsforschung (ZEW)},
title = {Patent Thickets, Licensing and Innovative Performance},
type = {ZEW Discussion Papers},
url = {http://hdl.handle.net/10419/27583},
year = {2008}
}
