Concord Music and Anthropic disagree on the scope of Magistrate Judge van Keulen’s discovery order related to Concord Music’s investigation of allegedly infringing outputs that were not stopped by Anthropic’s guardrails.
Anthropic’s Position: The Court Should Confirm That Its October 12, 2025 Order Requires Publishers To Produce The Same Information For The 15,000 Prompt- Output Production As For The 5 Million Prompt-Output Sample.
Publishers’ Position: Anthropic improperly seeks to make an end-run around the Court’s discovery ruling and to drastically expand the scope of ordered discovery.