To establish a claim for unfair and deceptive trade practices, a plaintiff must show that the (1) defendant committed an unfair or deceptive act or practice. Unfair trade practice refers to the use of various deceptive, fraudulent, or unethical methods to obtain business.We offer an informal complaint resolution service to Washington state residents, and to consumers with complaints about businesses located in Washington state. Deceptive conduct constituting unreasonable interference with another's promotion and conduct of business is part of a heterogeneous collection of legal. You can file a claim for a deceptive practice or act under section 349 of the New York General Business Law. The FDUTPA prohibits companies from engaging in a broad range of unfair or deceptive acts, such as false advertising, fraud, and misrepresentation. DECEPTIVE WHOLESALE AND GOING-OUT-OF-BUSINESS ADVERTISING. A person engages in a "deceptive trade practice" if, in the course of his or her business or occupation, he or she: 1. Suit was brought in Galveston County, Texas and Big Rock filed a plea of privilege to be sued in Harris County, Texas. They also prohibit companies from unfair business practices that can harm other companies in their industry.