E.I. du PONT de NEMOURS COMPANY, a corporation of the State of Delaware, Plaintiff Below, Appellant, v. ALLSTATE INSURANCE COMPANY, As Successor to Northbrook Excess and Surplus Insurance Company, Formerly Northbrook Insurance Company; Commercial Union Insurance Company, as Successor to Employers Surplus Lines Insurance Company; the Employers’ Liability Assurance Corporation Ltd.; European General Reinsurance Company; […]