United States v. Continental Can Co., 378 U.S. 441 (1964), was a U.S. Supreme Court case which addressed antitrust issues.

One issue it addressed was how should a market segment be defined for purposes of reviewing a merger of companies which manufacture different but related products.

The government sought Continental Can's divestiture of the assets of Hazel-Atlas, arguing that the merger was a violation of Section 7 of the Clayton Antitrust Act.

The district court dismissed the case, holding that the government had failed to prove reasonable probability of lessening competition in the markets it had identified.

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