Zillow Group, Inc. ZG Number of patent, granted

On September 17, 2019, International Business Machines Corporation (“IBM”) filed a complaint against us in the U.S. District Court for the Central District of California, alleging, among other things, that the Company has infringed and continues to willfully infringe seven patents held by IBM and seeks unspecified damages, including a request that the amount of compensatory damages be trebled, injunctive relief and costs and reasonable attorneys’ fees. Our motion to transfer venue to the U.S. District Court for the Western District of Washington (the “Court”) was granted on May 28, 2020. On November 25, 2022, Zillow filed a motion to join an Inter Partes Review (“IPR”) petition within Ebates Performance Mktg., Inc. d/b/a Rakuten Rewards v. Int’l Bus. Machs. Corp. (“Rakuten IPR”), IPR2022-00646 concerning one patent in this action, which the Court granted on April 20, 2023. On October 11, 2023, the U.S. Patent and Trial Appeal Board (“PTAB”) ruled on the Rakuten IPR finding the claims of the patent asserted against Zillow unpatentable. IBM appealed the PTAB’s decision on November 21, 2023 (the “PTAB Appeal”), and cross appeals were filed by Ebates Performance Marketing Inc. on November 21, 2023 and by us on December 15, 2023. On March 20, 2024, IBM voluntarily dismissed all claims filed in this action against Zillow with prejudice, with the exception of those pertaining to the patent asserted within the pending PTAB Appeal. On June 21, 2024 we filed our response to the PTAB Appeal. On July 30, 2024, IBM filed its reply in further support of the PTAB Appeal. On September 3, 2024, we filed our reply in further support of our cross-appeal. On December 9, 2025, the Federal Circuit issued an order affirming the October 11, 2023 PTAB decision in full. On April 17, 2026, we filed our motion for summary judgment. On June 30, 2026, the Court issued an order denying Zillow’s motion.