Celler-Kefauver Act Definition
What Is the Celler-Kefauver Act? The Celler-Kefauver Act is one of several U.S. laws designed to prevent certain mergers and acquisitions (M&A) from creating monopolies or otherwise significantly reducing competition in the United States. It was passed in 1950 to strengthen existing antitrust laws and close loopholes present in the Clayton Act and the Sherman Antitrust Act.