Wayne Moving and Storage v. School District of Philadelphia - October 28, 2010 - 3d Circuit Court of Appeals
http://www.ca3.uscourts.gov/opinarch/093890p.pdf
In Wilson Area School District v. Skepton, the Supreme Court of Pennsylvania held that parties to a contract "are not entitled to the remedies available under a judicially-imposed quasi[-]contract [i.e., the parties are not entitled to restitution based upon the doctrine of unjust enrichment] because the terms of their agreement (express and implied) define their respective rights, duties, and expectations." 895 A.2d 1250, 1254 (Pa. 2006) (modifications in original) (quoting Curley v. Allstate Ins. Co., 289 F. Supp. 2d 614, 620 (E.D. Pa. 2003)); see also In re Penn Cent. Transp. Co., 831 F.2d 1221, 1230 (3d Cir. 1987) (holding that a party cannot assert a claim of unjust enrichment "if there is an express contract on the same subject").
