Learn about tortious interference with a business relationship. To prove tortious interference with an existing contract, you must show that: A contract exists between you.The elements of tortious interference are not quite as clear cut as they seem. For example, interference is only wrongful if it is intentional. To set up a meeting regarding tortious interference, please call us in Houston at 713-804-9318 or complete our contact form. Our Houston contract litigation attorneys specialize in resolving breach of contract disputes in Texas. You will need to get your lawsuit on file within two years of when the tortious interference occurred. No. In order to succeed in a case for intentional interference you have to meet six criteria: 1. No. In order to succeed in a case for intentional interference you have to meet six criteria: 1. Call our firm at 713-622-7271 or fill out our online intake form for a free initial consultation.