The interference was improper. The defendant's business behavior led to a breach of the contract while the plaintiff suffered damages.Tortious interference happens when your competitor tries to break or damage an economic agreement or contract your business has with a third party. Wrongful or tortious interference with contracts happens when a thirdparty intentionally causes a contracting party to commit a breach of contract. In interference claims, this involves demonstrating that the defendant knew about the contract and purposely interfered with it. Call 561-953-6662 or fill out an online case evaluation form today to get started towards the right resolution to your tortious interference case. A fundamental requirement of interference with contractual relations is the existence of a contract between the plaintiff and a third party. E.g. Lessee under finance lease as beneficiary of supply contract. "Justification or privilege to interfere with a contract is a defense to a tortious interference claim. Pennsylvania courts apply the two-year statute of limitations of 42 Pa. Cons. Stat.