908 F.2d 981 (D.C. Cir. 1990)
United States v. Baker Hughes Inc.
Does the merger between Baker Hughes Inc. and Hughes Tool Company violate antitrust laws by significantly reducing competition in the market for two-cone rotary rock bits?
Under the Clayton Act, Section 7 prohibits mergers and acquisitions where the effect 'may be substantially to lessen competition, or to tend to create a monopoly.' The government bears the initial burden of establishing a prima facie case that the merger would significantly increase market concentration. Once established, the burden shifts to the merger proponents to prove that the merger is not anticompetitive.
The court held in favor of Baker Hughes, affirming the lower court's decision and finding that the evidence presented by the defendants successfully rebutted the government's prima facie case against the merger.
This case is crucial for law students and practitioners as it delineates the methodology for evaluating mergers under antitrust scrutiny. It highlights the importance of not just static measures of market concentration but also dynamic factors, like ease of market entry and innovation. Furthermore, it underscores the burden of proof in antitrust merger cases, providing a framework for both prosecutors and defense in merger litigation.