In the European Union, competition law promotes the maintenance of competition within the European Single Market by regulating anti-competitive conduct by companies to ensure that they do not create cartels and monopolies that would damage the interests of society.

affected by both British and European elements.

Competition law theory covers the strands of thought relating to competition law or antitrust policy.

In addition to federal laws, each state has its own unfair competition law to prohibit false and misleading advertising.