472 F.3d 99 ABT BUILDING PRODUCTS CORPORATION; ABTco, Incorporated, Plaintiffs-Appellees,v.NATIONAL UNION FIRE INSURANCE COMPANY OF PITTSBURGH, Incorporated, Defendant-Appellant.Complex Insurance Claims Litigation Association, Amicus Supporting Appellant. No. 05-1739. United States Court of Appeals, Fourth Circuit. Argued May 25, 2006. Decided December 19, 2006. COPYRIGHT MATERIAL OMITTED COPYRIGHT MATERIAL OMITTED ARGUED: Jeffrey A. Goldwater, Bollinger, Ruberry & […]