On January 25, 2010, U.S. Bankruptcy Judge Peck struck down a provision that used the bankruptcy of Lehman Brothers Holdings, Inc. to trigger subordination of a Lehman subsidiary’s swap claim against a securitization vehicle in the United Kingdom. The opinion invalidates a standard clause designed to subordinate or "flip" the priority of a swap counterparty’s claim upon a default of either the swap counterparty or its guarantor.