December 12, 2025

CoStar Group Inc et al v. Zillow Group Inc et al

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Reflects complaints, answers, motions, orders and trial notes entered from Jan. 1, 2011.
Additional or older documents may be available in Pacer.

Coverage

  1. March 27, 2026

    CoStar Expands Mass Copyright Case Against Zillow

    Commercial real estate information company CoStar Group Inc. updated its mass copyright infringement suit against property listing company Zillow Group Inc. on Friday, now alleging in Washington federal court that Zillow stole more than 53,000 of CoStar's copyrighted property photos.

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