Gibson, Dunn & Crutcher has been disqualified from representing a limited partnership in a dispute with a private equity fund because at least one of its lawyers, while working at another firm, had drafted fund formation documents at issue in the suit.

Though that lawyer was not working on the present litigation, Manhattan Supreme Court Justice Bernard Fried said the plaintiff had failed to meet an “especially heavy” burden to show the lawyer’s conflict of interest should not be imputed to Gibson Dunn in Casita, LP v. MapleWood Equity Partners (Offshore), Ltd., 603525/2005.