In Florida, any third party who intentionally interferes with a contractual relationship between two parties may be held liable for tortious interference. Handling the Attorney-Client Relationship: Learn about the attorney-client relationship and the factors that may necessitate termination.Tortious interference occurs when one party interferes with an advantageous business relationship of another party, causing economic harm. 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. At our Florida law firm, out experienced business law attorneys have honed our negotiation skills, style and strategy to the advantage of our business clients. In bringing the motion, the duty of confidentiality applies and cannot be revealed in the motion.