by , 8:40 AM EST, November 19th, 2008

The unauthorized Mac cloner Psystar watched its case against Apple crumble to the ground on Tuesday when the court dismissed its counterclaims that the Cupertino company violated antitrust laws by prohibiting other companies from selling Mac-compatible hardware. The ruling means Psystar may now have to face up to Apple's suit that alleges it is violating Apple-owned trademarks and copyrights.

U.S. District Judge William Alsup gave Psystar 20 days to amend its claim and added "Any such motion should be accompanied by a proposed pleading and the motion should explain why the foregoing problems are overcome by the proposed pleading. Plaintiff must plead its best case. Failing such a motion, all inadequately pled claims will be dismissed without further leave to amend."

Considering, however, that Judge Alsup called all of Psystar's arguments "unenlightening," it isn't likely that the company will be able to present a compelling case to the court within the next 20 days. If not, Psystar may find itself in a very weak position against Apple's claims.

Speaking anonymously, one attorney familiar with this type of case commented that for Psystar it's "game over. It's that simple. Pssystar is now without either defenses or claims. Its only options are to appeal or settle with Apple on Apple's terms."

Psystar landed in this sticky legal bind after it began making and selling Macintosh-compatible clone computers earlier this year without permission from Apple. The real Mac maker hasn't offered a clone licensing program ever since CEO Steve Jobs returned to the company in 1996, and it doesn't seem likely that it will reverse that stance any time soon.

At this point, Psystar's future -- at least as a Mac clone maker -- doesn't look very bright, and the few systems it did sell may become collector's items very soon.