CoStar, Quinn Emanuel Spar Over Litigation Representation

By Lauren Berg ( January 13, 2026, 11:41 PM EST) -- CoStar urged a California federal judge Tuesday to disqualify Quinn Emanuel Urquhart & Sullivan LLP from helping a rival commercial real estate platform pursue antitrust counterclaims in CoStar's copyright infringement suit, while the law firm moved to drop its representation of CoStar in separate litigation....

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