International Business Machines Corporation v. Zillow Group Inc et al

  1. April 20, 2026

    Zillow Asks Wash. Court To End IBM's Patent Suit

    Zillow has urged a Washington federal court to sack IMB Corp.'s lawsuit that accuses the online real estate marketplace company of infringing a user sign-on patent, saying users logging into its platforms have to take an "overt action" that is "explicitly contrary" to what the patent requires.

  2. October 17, 2022

    Fed. Circ. Affirms Zillow's Partial Win In IBM Patent Lawsuit

    A Federal Circuit panel on Monday found that two IBM patents covered abstract ideas, cementing a partial trial victory for Zillow Group Inc. against IBM's claims it infringed the patents.