Waiver or Modification. This Agreement may be amended, modified, superseded or canceled, and any of the terms, covenants, representations, warranties or conditions hereof may be waived, only by a written instrument executed by a duly authorized officer of Buyer or each party Seller, or, in the case of a waiver or consent, by or on behalf of the Party or Parties waiving compliance or giving such consent. Notwithstanding anything to the contrary contained in the foregoing sentence, Buyer shall be afforded Favored Nations Treatment, and if same becomes applicable, the terms of this Agreement shall be modified accordingly without the requirement by approval of Seller.

Amendments and Waivers. This Agreement may not be amended except by an instrument in writing signed on behalf of Buyer and Seller. Each Party may, by an instrument in writing signed on behalf of such Party, waive compliance by any other Party with any term or provision of this Agreement that such other Party was or is obligated to comply with or perform. No failure or delay by any Party in exercising any right, power or privilege hereunder shall operate as a waiver thereof nor shall any single or partial exercise thereof preclude any other or further exercise thereof or the exercise of any other right, power or privilege. Except as otherwise provided herein, the rights and remedies herein provided shall be cumulative and not exclusive of any rights or remedies provided by law.

Amendment and Waiver. This Agreement may not be modified or amended, except by an agreement in writing signed by Sellers and Purchaser. Sellers or Purchaser may waive any of the conditions contained herein or any of the obligations of the other party hereunder but any such waiver shall be effective only if in writing and signed by the party waiving such condition or obligation.