United States District Court judge William Alsup just released an important decision in the AI copyright litigation in Bartz v Anthropic PBC. He summarized his ruling as follows:

• The use of the books at issue to train Claude and its precursors was exceedingly transformative and was a fair use under Section 107 of the Copyright Act.
• The digitization of the books purchased in print form by Anthropic was also a fair use …because all Anthropic did was replace the print copies it had purchased for its central library with more convenient space-saving and searchable digital copies for its central library — without adding new copies, creating new works, or redistributing existing copies.