VAN KAMPEN UNIT TRUSTS, SERIES 837 TRUST AGREEMENT Dated: January 7, 2009 This Trust Agreement among Van Kampen Funds Inc., as Depositor, The Bank of New York Mellon, as Trustee and Edward D. Jones & Co., L.P., as Supervisor, sets forth certain...Trust Agreement • January 7th, 2009 • Van Kampen Unit Trusts Series 837
