Home1999 Treaties and Agreements ...Australia (13033) – Agreement on Mutual Antitrust Enforcement Assistance hide Australia (13033) – Agreement on Mutual Antitrust Enforcement Assistance TIAS Office of Treaty Affairs November 5, 1999 Trade: Antitrust Agreement signed at Washington April 27, 1999; Entered into force November 5, 1999. With annex. Download Attachment [1 MB] Tags Australia Trade and Investment Treaties