Wikimedia Foundation Seeks to File Amicus Brief in OpenAI Copyright Case

The Foundation’s filing, dated October 29, 2026, and addressed to Judge Sidney H. Stein, is a letter motion for leave to file, with the proposed brief attached as an exhibit and styled as supporting neither party. It was submitted under the court’s local rules and an August 7, 2026 order governing amicus participation, as modified on September 24, 2026; because that order directs prospective amici to move for leave, Wikimedia did not seek the parties’ consent. The proposed brief contains 5,831 words, within the 6,000-word limit the court set for amicus briefs. Rhett O. Millsaps II of Lex Lumina LLP is counsel of record, alongside the Foundation’s General Counsel Stephen LaPorte, Associate General Counsel Jacob Rogers, and Legal Counsel Aly Marino.