Robbins Geller Rudman & Dowd has failed in its last-ditch effort to avoid sanctions for pursuing a botched securities fraud case against The Boeing Company based on testimony from an unreliable confidential witness.

More than three years after the underlying case was dismissed, U.S. District Judge Ruben Castillo in Chicago ordered Robbins Geller to pay Boeing’s attorneys fees and expenses. The judge faulted the firm for “reckless” conduct in failing to conducting a proper investigation, failing to verify an investigator’s findings and for misleading the court about the strength of its case. Sanctions are also justified in light of Robbins Geller’s “history of similar misconduct,” the judge wrote.