Exhibit 1.1 VAN KAMPEN UNIT TRUSTS, SERIES 1273 TRUST AGREEMENT Dated: November 6, 2012 This Trust Agreement among Van Kampen Funds Inc., as Depositor, The Bank of New York Mellon, as Trustee, and Cohen & Steers Capital Management, Inc. and Invesco...Trust Agreement • November 6th, 2012 • Van Kampen Unit Trusts Series 1273
