To state a claim for breach of contract under Pennsylvania law, a plaintiff must
allege: (1) the existence of a contract, including its essential terms,(2) a breach of a duty
imposed by the contract, and (3) resultant damages. Ware v.Rodale Press, Inc., 322 F.3d
http://www.paed.uscourts.gov/documen...s/08D0320P.pdf
This case would full under an Implied-in--fact contract, which is supported in Pennsylvania.

