The attorney-client privilege issue at the heart of the dispute between Barclays and Lehman Brothers got a whole lot bigger Wednesday, when the Boies, Schiller & Flexner team representing Barclays filed papers requesting access to privileged documents from as many as three additional Am Law 100 firms.

The new request, if granted, could apply to documents with Quinn, Emanuel, Urquhart, Oliver & Hedges; Milbank, Tweed, Hadley & McCoy; and Hughes, Hubbard & Reed. Quinn Emanuel and Milbank represent the creditors committee in the Lehman bankruptcy, and Hughes Hubbard partner James Giddens is serving as the trustee on the case.