Antitrust deals with the area of law concerned with maintaining competition in private markets. The American antitrust and fair trade laws protect and promote competition in the free enterprise system. These laws provide remedies for businesses and consumers from the effects of monopolization and conspiracy, fixed prices, boycotts, refusals to deal, divided markets, etc.

Commercial law or business law is the body of law which governs business and commerce and is often considered to be a branch of civil law and deals both with issues of private law and public law. Commercial law regulates corporate contracts, hiring practices, and the manufacture and sales of consumer goods.

Energy Law deals with commercial and regulatory matters involving the purchase, sale, transportation, storage, distribution, and development of oil, electric, natural gas, and other forms of energy.

Environmental law is a body of law which addresses the system of complex and interlocking rules which seeks to protect from destruction or development certain species or favored natural areas thought to be endangered by human encroachment.

civil action brought before a court in order to recover a right, obtain damages for an injury, obtain an injunction to prevent an injury, or obtain a declaratory judgment to prevent future legal disputes. It usually involves dispute resolution of private law issues between individuals, business entities or non-profit organizations. However, it may involve public law issues in those jurisdictions that enable the government to be treated as if it were a private party in a lawsuit