Our New York City business litigation lawyers handle tortious interference with business cases for business of varying disciplines and sizes. To prevail on a claim for tortious interference with business relations in New York, a party must prove.Here's a dose of some cold, hard truth: As a practical matter it is far from simple to prove a tortious interference with contract claim under New York law. In New York, a tort is defined as any unlawful act that causes harm to another person, their property, reputation, or something similar. Under New York law, a tort action for interference with a contractual relationship must be based upon five essential elements. Long Island, New York business litigation and breach of contract lawyer Jonathan Cooper discusses how to prove a tortious interference claim under NY law. If a third party unfairly interferes with a business contract or relationship and causes damage, a tortious interference claim may be a viable option. A defendant may be justified or privileged to interfere with contractual or business relationships in certain circumstances. Supreme Court should have dismissed plaintiffs cause of action for tortious interference with business relations. The first, under tort law, is against the third party who interfered with the business relationship.