Exhibit 1.1 VAN KAMPEN UNIT TRUSTS, SERIES 804 TRUST AGREEMENT Dated: October 16, 2008 This Trust Agreement among Van Kampen Funds Inc., as Depositor, The Bank of New York Mellon, as Trustee and Cohen & Steers Capital Management, Inc., as Supervisor,...Trust Agreement • October 16th, 2008 • Van Kampen Unit Trusts Series 804
