All notices, requests, demands and other communications permitted or required under this Agreement will be in writing and will be deemed duly given (a) upon delivery if delivered in person, (b) the next business if sent by overnight courier services, or (c) three (3) business days after deposit if sent by U. S. Mail, certified or registered, return receipt requested, in each case postage-prepaid and addressed to the parties at their respective addresses set forth on the signature page hereto or to such other address(es) as a party hereto may designate in writing from time to time in accordance with this paragraph.