Common use of Modification, supplementary, deletion and alteration to the Lease Clause in Contracts

Modification, supplementary, deletion and alteration to the Lease. No modification, supplementary, deletion or alteration to the Lease shall be valid unless made in writing, signed by duly authorized representatives of the parties and affixed with their common seals. The above common seals shall be deemed to have been affixed on the date signed by the foregoing authorized representatives.