Market power, antitrust policy, and the Roberts Court.

This article offers information on various court cases on antitrust policy under Judge John Roberts in the U.S. In such cases, Roberts competently assess claims of commercial predation and expresses its fears on the cost of erroneous findings. In Twombly case, the Court is skeptical about the ability of lower courts to resists drawing "false inferences" in lawsuits involving charges of tacit collusion among oligopolists while in Credit Suisse, Roberts doubts the ability of tribunals to refrain from making unusually serious mistakes. Discussed are the details of the issue.