NO WAIVER OR AMENDMENT. No waiver of any of the terms, provisions or conditions hereof, or any modification of such terms, provisions or conditions, shall be effective unless in writing and signed by a duly authorized officer of each party.
Appears in 7 contracts
Samples: Pledge Fee Agreement (Transatlantic Petroleum Ltd.), Pledge Fee Agreement (Transatlantic Petroleum Ltd.), Pledge Fee Agreement (Transatlantic Petroleum Ltd.)