United States Supreme Court vacates and remands MeadWestvaco and provides further clarification concerning determination of unitary assetsBy David J. Kupiec & Natalie M. MartinMay 2008On April 15, 2008, the United States Supreme Court unanimously vacated and remanded MeadWestvaco Corporation v. Illinois Department of Revenue (U.S. Sup. Ct. No. 06-1413) back to the Illinois Appellate Court for determination as to whether MeadWestvaco Corporation (hereafter “Mead”) and its wholly owned business division, Lexis/Nexis (hereafter “Lexis”), were part of a unitary business.