 Addyston Pipe & Steel Co. v. United States

**Addyston Pipe & Steel Co. v. United States** is a significant U.S. Supreme Court case from 1899 that dealt with issues of antitrust law and the legality of business practices that could be deemed anti-competitive. The case arose when Addyston Pipe and Steel Company, along with other companies, was accused of engaging in a conspiracy to fix prices and allocate markets for the manufacture and sale of cast iron pipe. The U.S.