Ka Mate another haka, "Kapa o Pango". Since the introduction of "Kapa o Pango" the longest sequence of "Ka Mate" performances by the All Blacks is nine, which occurred between 22 August 2009 and 12 June 2010. Between 1998 and 2006, Ngati Toa attempted to trademark "Ka Mate" to prevent its use by commercial organisations without their permission. In 2006 the Intellectual Property Office of New Zealand declined their claim on the grounds that "Ka Mate" had achieved wide recognition in New Zealand and abroad as representing New Zealand as a whole and not a particular trader. In March 2011 The NZ
Libertarian perspectives on intellectual property Bouckaert, Jeffrey Tucker, and N. Stephan Kinsella. Kinsella points out in "Against Intellectual Property" that patents may be inefficient since they divert resources from research and development to patent filing and lawsuits. He notices that theoretical research can not be patented as easily as practical research and thus theoretical research is relatively underfunded. Moreover, he argues that property rights can only apply to resources that are scarce, which intellectual property is not. Kinsella also claims that the only way that intellectual property rights can be implemented is by limiting others' physical property rights. David D. Friedman takes a neutral stance