Attorneys for the former International Monetary Fund leader filed the motion in a Bronx court Monday. They say that Strauss-Kahn's time as head of the fund gives him immunity from the civil litigation.
Sex assault charges against the 62-year-old French diplomat were recently dismissed after prosecutors said they had lost faith in the woman's credibility.
The maid has accused him of forcing her to perform oral sex in his hotel suite on May 14.
In a recent interview on French television, he called the encounter a "moral failing." A French writer has accused Strauss-Kahn of trying to rape her in 2003.
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