September 08, 2025
A Ninth Circuit panel rejected a call to revisit the court's June decision reviving claims alleging that real estate information service CoStar monopolizes several commercial real estate listing markets through exclusive deals with brokers and technological barriers for competitors.
August 19, 2025
A group of antitrust scholars, former government officials and a center-left technology industry coalition asked the Ninth Circuit to allow them to file amicus briefs that back CoStar Group Inc.'s request for a rehearing of a Ninth Circuit ruling that revived rival Commercial Real Estate Exchange Inc.'s antitrust counterclaims.
August 07, 2025
Commercial real estate information company CoStar Group Inc. and a subsidiary are urging the Ninth Circuit to reconsider its ruling reviving antitrust counterclaims lodged by rival Commercial Real Estate Exchange Inc., which CoStar has accused in a suit of stealing property listing data and copyrighted photos.
June 23, 2025
A Ninth Circuit panel on Monday revived counterclaims accusing CoStar of monopolizing commercial real estate information markets in the company's case accusing a rival of engaging in "industrial-scale" copyright infringement.
October 09, 2024
A Ninth Circuit judge on a three-judge panel appeared open Wednesday to reviving counterclaims alleging CoStar monopolizes commercial real estate information markets, telling CoStar's counsel repeatedly that the lower court's ruling "reads more like summary judgment" than the granting of a motion to dismiss and improperly draws inferences in favor of CoStar.
April 30, 2024
Several former antitrust enforcers told the Ninth Circuit that a lower court was right to toss a rival's claims that CoStar monopolizes commercial real estate information markets despite concerns from the Federal Trade Commission about the allegations.
April 23, 2024
CoStar urged the Ninth Circuit not to revive antitrust counterclaims from Commercial Real Estate Exchange Inc., despite backing from the Federal Trade Commission, arguing the rival is trying to use antitrust law to get free access to its platforms.
January 29, 2024
The Federal Trade Commission asked the Ninth Circuit on Friday to revive Commercial Real Estate Exchange Inc.'s antitrust counterclaims against commercial real estate information firm CoStar, warning that a district court's dismissal could impair the agency's probe of similar allegations as well as "meritorious cases against monopolists of all stripes."
January 22, 2024
Commercial Real Estate Exchange Inc. pressed the Ninth Circuit on Friday to revive antitrust counterclaims characterizing commercial real estate information firm CoStar's original copyright suit as part of a broader campaign to sue rival CREXi "into submission."
November 17, 2023
A Ninth Circuit panel has declined to toss Commercial Real Estate Exchange's appeal of an earlier ruling on its antitrust counterclaims against commercial real estate information firm CoStar, allowing the appeal to proceed to a full briefing next month.