All notices and other communications given pursuant to this Assignment and the Lease shall be in writing and shall be (i) mailed by first class, United States Mail, postage prepaid, certified, with return receipt requested or deposited with a nationally-recognized overnight courier, and addressed to the Parties at the address specified in this Section 1 5 , (ii) hand delivered to the intended addressee, or (iii) sent by prepaid telegram, cable, facsimile transmission, or telex followed by a confirmatory letter by one of the foregoing means.  Notice sent by certified mail, postage prepaid, shall be effective three business days after being deposited in the United States Mail; notices by overnight courier shall be effective upon deposit with such courier; and all other notices shall be effective upon delivery to the addressee.  The Parties may change their addresses by giving notice thereof to the other in conformity with this provision.