CoStar Group, Inc. and CoStar Realty Information, Inc. (collectively, “CoStar”) and Commercial Real Estate Exchange, Inc. (“CREXi”) are online platforms competing in the commercial real estate listing, information, and auction markets. CoStar sued CREXi for copyright infringement, alleging that CREXi listed images and information hosted by CoStar without permission. CREXi counterclaimed on antitrust grounds, asserting that CoStar engaged in monopolistic practices to exclude competition.

The United States District Court for the Central District of California dismissed CREXi’s antitrust counterclaims and directed entry of final judgment on those claims under Fed. R. Civ. P. 54(b). The district court held that CREXi failed to show CoStar had monopoly power and that the agreements at issue were not exclusive. CREXi appealed the dismissal of its antitrust counterclaims.

The United States Court of Appeals for the Ninth Circuit reviewed the case and reversed the district court’s dismissal of the antitrust counterclaims. The Ninth Circuit held that CREXi successfully stated claims under §§ 1 and 2 of the Sherman Act, California’s Cartwright Act, and the Unfair Competition Law. The court found that CREXi plausibly alleged CoStar had monopoly power in the relevant markets and engaged in anticompetitive conduct by entering into de facto exclusive deals with brokers and imposing technological barriers to entry. The court concluded that a monopolist using its power to exclude competitors and maintain monopoly power violates § 2 of the Sherman Act, and using exclusive deals to do so violates § 1 of the Sherman Act and the Cartwright Act. The court also held that CREXi stated claims under the “unfair” and “unlawful” prongs of the Unfair Competition Law. The Ninth Circuit affirmed the district court’s dismissal of CREXi’s tortious interference claims as they were improperly raised. The case was remanded for further proceedings. View “COSTAR GROUP, INC. V. COMMERCIAL REAL ESTATE EXCHANGE, INC.” on Justia Law