Apple has won a key victory in its ongoing legal battle with 'clone' Mac maker Psystar.
Psystar started selling Intel-powered PCs pre-installed with Mac OS X Leopard in April this year. The company sells its computers from a starting price of $555, undercutting even the Mac Mini - Apple's cheapest desktop running OS X.
Apple was not impressed.
In July, Apple sued Psystar, claiming it had broken multiple copyright and software-licensing laws. The company's Mac OS X end-user licensing agreement forbids users from installing the operating system on non-Apple hardware.
In August, Psystar counter-sued Apple, claiming the Cupertino firm operates a monopoly and complaining about restraint of trade and other antitrust issues. Last month, both companies agreed to a mediated route for resolving the debate.
Then last week a judge threw out all six claims made by Psystar and labelled them "internally contradictory".