In his ruling in the Apple-Psystar litigation, Judge William Alsup, of the US District Court for the Northern District of California, granted Apple's request for permanent injunction; as a result of which Psystar, the Mac computer clone maker, cannot sell its so-called 'Hackintosh' products.

The permanent injunction ruling, which comes after the two companies worked out a $2.67 million partial settlement - split between damages and legal costs - on December 1, bans Psystar from selling copies of the Mac OS or selling products that can get around Apple's access control.

Amongst other things, the injunction orders that Psystar is enjoined from: "Circumventing any technological measure that effectively controls access to plaintiff's copyrighted Mac OS X software, including, but not limited to, the technological measure used by Apple to prevent unauthorized copying of Mac OS X on non-Apple computers."

The permanent injunction also envelops Psystar's Rebel EFI, a software product for which Psystar's lawyers were seeking an exclusion from the injunction, arguing it was an issue pertaining to a separate lawsuit the company had filed against Apple in Miami. Rebel EFI enables users to run the Mac operating system Snow Leopard on a non-Apple computer.

The ruling, however, allows Psystar to file documents giving additional information about Rebel EFI; and Psystar has until December 31 to comply with the court order.