Our New York City business litigation lawyers handle tortious interference with business cases for business of varying disciplines and sizes. A tortious interference with contract claim is only proper when a defendant causes a third-party (not the plaintiff) to breach the underlying contract.When it comes to tortious interference with contract claims, one of required elements makes it tough to prove your case under NY law, says Jonathan Cooper. Wrongful interference with a contractual relationship requires that there is a valid contract between two parties, a third party who knows the contract exists. One classic example of interference in New York case law is holding over occupancy of a property to prevent a new lessor from taking over possession. Wrongful interference with a contractual relationship requires the existence of , third party , and . Of, the freedom of movement of any person on University Property. Retaliation Based on Exercise of Workplace Rights Is Unlawful. Example 2: Molly's Restaurant is located in the zone Queens Central. What Is the Tort of Intentional Interference with Contractual Relations?