Judgment Day for The Sopranos is Sept. 13.

That was the word yesterday from Chicago Circuit Court, where a group of Italian-Americans argued their case against HBO and the makers of the Mafia TV series. 

After hearing arguments from both sides, Judge Robert Seibel ordered them to return to his courtroom on Sept. 13, when he will issue a written ruling on a motion filed by HBO to dismiss the case. 

"I'm glad he's going to put his ruling in writing and give it the thoughtful process that I think the issues deserve," said Chicago attorney Enrico Mirabelli, one of the lawyers representing the American Italian Defense Association (AIDA), the self-styled watchdog group that filed suit against The Sopranos last April. 

The group sued under a clause in the Illinois state constitution that condemns the negative portrayal of ethnic groups in the media. 

HBO and parent company AOL/Time Warner responded by filing their motion to dismiss. 

HBO officials are refraining from commenting on the case until a decision is rendered.

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