Been there, done that. Not a lawyer, but in engineers words: As soon as a corporation is caught pants down by an US court or similar authority and subponead every paper produced after the reception of the subponea, including the lunch menu - at least in the defendants opinion - is stamped priviledged attorney work product and becomes part of the defence stategy and shall not be used by the opponents. SOP if the **** hits the fan. Court has then to decide if the lunch menu is actually such a privileged attorney work product or not.