All notices, requests, demands, claims and other communications hereunder will be in writing. Any notice, request, demand, claim or other communication hereunder will be deemed duly given if (and then seven days after) it is sent by certified mail, return receipt requested, postage prepaid and addressed to Licensor or to Licensee at the address set forth below, or such other address of which a party gives notice to the other party; or by acknowledgement of on the part of the receiving party of any form on communication including but not limited to e-mail; fax or other electronic communication.