Such tactics are called "deceptive trade practices" and include anything from mislabeling food products to hiding defects on a used car. Gather your documents.Under the law, claims in advertisements must be truthful, cannot be deceptive or unfair, and must be evidence-based. The consumer protection and unfair competition laws apply to all industries including financial, healthcare, and even legal services procured in Maryland. You may file a Complaint with the Office of the Attorney General's (OAG) Consumer Protection Division. There are three ways to get a Complaint form. In this module we'll learn about how the federal government has responded to false advertising and marketing to protect American consumers. We'll look at deceptive unfair acts and practices, how the government classifies an action as deceptive or unfair, and telephone solicitations. MD Coml T. 13, Subt. Deceptive trade practices.