Ninth Circuit Revives Antitrust Case Against CoStar, Challenging Real Estate Data Monopoly

The U.S. Court of Appeals for the Ninth Circuit has revived antitrust counterclaims that Commercial Real Estate Exchange Inc. (CREXi) brought against CoStar Group Inc., a major player in the real estate data sector. Handled by Keker Van Nest & Peters, the appeal largely succeeded in contesting CoStar’s market practices. The ruling highlights that CREXi “plausibly alleges that CoStar has monopoly power in the relevant markets and engaged in anticompetitive conduct by entering de facto exclusive agreements and constructing technological barriers,” as noted by Judge Anthony D. Johnstone.

In response, CoStar, represented by Latham & Watkins, has accused CREXi of copyright infringement. The court’s decision to reinstate these antitrust claims against CoStar signals potential implications for the competitive landscape in real estate data. For further details on this legal development, the full article is available on Law.com.