The Apple software license does not allow Mac OS X to be used on hardware that is not "Apple-branded".[2] The legality of this form of tying is disputed by companies such as Psystar Bizon computer and PearC, who have attempted to release products using Mac OS on non Apple-machines. However, Apple claims the methods it uses to prevent Mac OS X from being installed on non-Apple hardware are protected by the DMCA, and in November 2009 won a summary judgement against Psystar on these grounds.[3]