The Deceptive Trade Practices Act. The Act gives consumers a way to sue sellers for false, misleading and deceptive business practices.Houston Deceptive Trade Practices Defense Attorneys. For complaints about false, misleading, or deceptive business practices. The primary purpose of the DTPA is to protect consumers against false, misleading, and deceptive business and insurance practices, unconscionable actions, and. This guide provides an overview of important Texas and federal laws designed to protect consumers from deceptive trade practices. If you believe you have been a victim of deceptive trade practices, the Texas DTPA offers several legal remedies. Then, after a few tank fill-ups, you realize you're only averaging 30 miles-per-gallon. To understand your rights in a Texas deceptive trade practices case, it's important that you speak with a law firm that handles DTPA cases. Our Texas DTPA lawyers have vast experience with DTPA lawsuits.