At any time prior to the Closing, the Buyer may (a) extend the time for the performance of any of the covenants, obligations or other acts of the Sellers and the Companies or (b) waive any inaccuracy of any representations or warranties or compliance with any of the agreements, covenants or conditions of the Sellers or any conditions to its own obligations. Any agreement on the part of the Buyer to any such extension or waiver will be valid only if such waiver is set forth in an instrument in writing signed on its behalf by its duly authorized officer. At any time prior to the Closing, the Sellers and the Companies may (a) extend the time for the performance of any of the covenants, obligations or other acts of the Buyer or (b) waive any inaccuracy of any representations or warranties or compliance with any of the agreements, covenants or conditions of the Buyer or any conditions to its own obligations. Any agreement on the part of the Sellers and the Companies to any such extension or waiver will be valid only if such waiver is set forth in an instrument in writing signed by the Sellers and the Companies. The failure of any party to this Agreement to assert any of its rights under this Agreement or otherwise will not constitute a waiver of such rights. The waiver of any such right with respect to particular facts and other circumstances will not be deemed a waiver with respect to any other facts and circumstances, and each such right will be deemed an ongoing right that may be asserted at any time and from time to time.