We here by undertake to give notice to the concerned Authorities of any change in our address for services mentioned above, during the period of protection. Due to this General Authorization, we authorize the said Agents to appoint another representative agents or attorneys and all are allowed to alter and amend any document, to maintain the subject matter hereof in force and to defend our rights from opposition and legal proceedings and we hereby confirm and notify whatsoever the said Agents or their substitutes may lawfully do. We hereby revoke all previous authorization (if any) in respect of the same matter.