Kentucky Derby-winning trainer Rick Dutrow has filed a federal lawsuit trying to overturn his 10-year ban from racing in New York for equine drug violations.The lawsuit, filed this week in U.S. District Court in Brooklyn, says the 53-year-old Dutrow has been "irreparably harmed" by the New York State Racing and Wagering Board for what he says is effectively a lifetime ban.Dutrow, who trained 2008 Kentucky Derby and Preakness winner Big Brown, claims racing officials engaged in "wrongful and malicious actions" against him. He's seeking $10 million for lost earnings, punitive damages and an order lifting the ban.He had unsuccessfully appealed the ban in state courts.A spokesman for the New York State Gaming Commission, the agency that succeeded the racing board, says they haven't been served with legal papers and declined to comment. Dutrow was denied a Kentucky racing license in 2011, with officials citing his previous suspensions for rules violations. None involved the Derby-winning horse.