All notices and other communications hereunder shall be in writing and shall be deemed received (a) on the date of delivery if delivered personally and/or by messenger service, (b) on the date of confirmation of receipt of transmission by facsimile (or, the first Business Day following such receipt if (i) the date is not a Business Day or (ii) confirmation of receipt is given after 5:00 p.m., Pacific Time) or (c) on the date of confirmation of receipt if delivered by a nationally or internationally recognized courier service (or, the first Business Day following such receipt if (i) the date is not a Business Day or (ii) confirmation of receipt is given after 5:00 p.m., Pacific Time), to the parties at the addresses set forth in the Purchase Agreement (or at such other address for a party as shall be specified by like notice).