What happened in UMG v. Udio? (plain-language case tracker)

Timeline from the docket (1:24-cv-04777, S.D.N.Y.)

• June 24, 2024 — the same label coalition sues Uncharted Labs (Udio's legal entity) in the Southern District of New York.
• November 5, 2025 — a stipulation so-ordered by Judge Hellerstein states that all claims "asserted by Plaintiffs UMG Recordings, Inc. and Capitol Records, LLC … are hereby dismissed without prejudice," and that claims "asserted by all other Plaintiffs … shall not be affected." Without prejudice means the claims can be refiled — the standard posture while a commercial relationship is being implemented.
• November 25, 2025 — Warner's entities dismiss, also without prejudice.
• April 15, 2026 — the court denies the defense motion to dismiss one of the remaining Sony plaintiffs' counts: the case proceeds.
• June 29, 2026 — the court denies Sony leave to add a much larger catalog to this case; the original action continues on its existing claims and schedule.
• July 20, 2026 — Sony and affiliated labels file a second action, Sony Music Entertainment v. Uncharted Labs, 1:26-cv-06120. Its complaint lists 30,117 additional sound recordings. Those are allegations to be tested, not adjudicated facts.

How does this differ from the Suno case?

Same original plaintiffs' coalition, same filing day, different exits: Warner left the Suno case with prejudice but the original Udio case without; UMG left Udio but is still fighting Suno. The new Sony action adds another reason not to summarize the dispute as “settled.” The asymmetry reflects negotiated commercial positions, not a judicial conclusion about training.