Wrongfully interfering with an individual's contractual or business relationships is known as "tortious interference. Under Florida law, the elements of a claim for tortious interference with contract are that: • A valid contract exists between the plaintiff and a third.Tortious interference claims arise when another business or person unjustly interferes with the business or contractual relationships of another business. In Florida, when two parties have a contract to do some kind of business with each other, it is illegal to interfere with that contract. Tortious interference happens when a third party to a business relationship or contract intentionally disrupts that relationship or contract. As long as the interference results in the parties' contractual relationship being harmed, tortious interference might be in play. In What Ways Does the Law Regulate Tortious Interference? One of the most common civil causes of action in Florida concerning unfair competition is tortious interference. The claim is one of tortious interference with contract, which is a substantive matter. The Court find that Florida substantive law properly applies.