All notices, requests and other communications required or permitted under this Lease shall be in writing and shall be personally delivered or sent by facsimile with confirmation of delivery and a hard copy to follow by mail or by certified mail, return receipt requested, postage prepaid or by a national overnight delivery service which maintains delivery records. Notices to Tenant shall be delivered to Tenant’s Address for Notices. Notices to Landlord shall be delivered to Landlord’s Address for Notices. All notices shall be effective upon delivery (or refusal to accept delivery). Either party may change its notice address upon written notice to the other party.