[Protest of Army Disclosure of Proprietary Data]

A firm protested the Army's disclosure of allegedly proprietary data that it had submitted to the Army in an unsolicited proposal during discussions. GAO found that the protest was untimely since: (1) it was not filed prior to the closing date for the receipt of proposals and was based on an alleged impropriety that was apparent prior to the closing date; and (2) the protester should have known that its allegedly proprietary data was being used, yet it participated in the procurement before filing its protest. Accordingly, the protest was dismissed.