@techreport{Cockburn2009Patent,
abstract = {We examine the relationship between fragmented intellectual property (IP) rights and the innovative performance of firms, taking into consideration the role played by in-licensing of IP. We find that firms facing more fragmented IP landscapes have a higher probability of in-licensing. For firms with small patent portfolios we also find a positive association between fragmentation and licensing costs as a share of sales. We observe a negative relationship between IP fragmentation and innovative performance, but only for firms that engage in in-licensing. In contrast, greater IP fragmentation is associated with higher innovative performance for firms that do not in-license. Furthermore, the effects of fragmentation on innovation also appear to depend on the size of a firm's patent portfolio. These results suggest that the effects of fragmentation of upstream IP rights are not uniform, and instead vary according to the characteristics of the downstream firm.},
address = {Mannheim},
author = {Iain M. Cockburn and Megan J. MacGarvie and Elisabeth M\"{u}ller},
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 = {Older version: http://hdl.handle.net/10419/27583},
number = {08-101 [rev.]},
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/10419/29635},
year = {2009}
}
