The United States v. ITT Continental Baking Co., 1974, was a Supreme Court case that revolved around the Sherman Antitrust Act and its application to a merger between two companies in the baking industry. The U.S government filed suit against ITT Continental Baking Company after it acquired another large bakery company, alleging that this acquisition violated Section 7 of the Clayton Act by significantly reducing competition in several geographic markets for bread products. However, ITT argued that their acquisition did not violate antitrust laws because they were not competitors with each other before the merger due to their operation in different geographical areas. The District Court initially ruled in favor of ITT but on appeal, the Supreme Court reversed this decision. The court held that even if two merging firms are not direct competitors at present or have never competed with each other previously does not mean they will never compete in future; thus such mergers can still be considered as potentially anti-competitive under Section 7 of Clayton Act which aims to prevent probable lessening of competition resulting from acquisitions and mergers.

In the dissenting opinion for United States v. ITT Continental Baking Co., it was argued that the majority's decision to allow a merger between two companies, despite their combined market share exceeding 7%, contradicted previous antitrust rulings and could potentially harm competition. The dissenters believed that this ruling would set a dangerous precedent by allowing large corporations to dominate markets without any checks or balances in place. They also expressed concern over the potential negative impact on small businesses who may be unable to compete with such conglomerates, leading to less diversity and choice within industries. Furthermore, they disagreed with the majority's interpretation of Section 7 of Clayton Act which prohibits mergers that may substantially lessen competition or tend towards monopoly in any line of commerce.