Antitrust law is a body of laws and regulations that promotes fair competition by restricting the anti-competitive behavior of businesses and other organizations. It is designed to protect consumers and encourage competition in the marketplace by preventing firms from creating or maintaining an illegal monopoly or taking advantage of their market power to raise prices and limit consumer choice. Antitrust law also seeks to ensure that businesses make decisions based on competitive forces, rather than agreements between them to limit competition or control an entire market.