Supreme Court of Delaware

Reset A A Font size: Print

Stonewall Ins. Co. v. E.I. du Pont de Nemours & Co., 523, 2009

In an action against an insurer seeking coverage for underlying litigation involving defects in a product for use in polybutylene plumbing systems, partial judgment for both parties is affirmed in part where 1) plaintiff-s production of an unsuitable product triggered only one single occurrence under the policies; and 2) the motion judge correctly applied the unambiguous noncumulation clause and reduced defendant-s liability properly. However, the judgment is reversed in part where the trial court incorrectly calculated the prejudgment interest accrual date.

Appellate Information

  • Submitted 03/10/2010
  • Decided 06/03/2010
  • Published 06/03/2010


  • STEELE, Chief Justice., Before STEELE, Chief Justice, HOLLAND and JACOBS, Justices.


  • Supreme Court of Delaware


  • For Appellant:
  • Dawn C. Doherty and Brian L. Kasprzak, Marks, O'Neill, O'Brien & Courtney, P.C., Wilmington, Delaware; Virginia A. Seitz (argued) and William M. Sneed, Sidley Austin LLP, Washington, DC; pro hac vice for appellant.

  • For Appellees:
  • John E. James an Richard L. Horwitz, Potter Anderson & Corroon LLP, Wilmington, Delaware; John M. Sylvester (argued), Christopher C. French and Kimberley J. Geary, K & L Gates LLP, Pittsburgh, Pennsylvania, pro hac vice for appellee.
Copied to clipboard