Bartz v. Anthropic

Class action alleging unauthorized use of copyrighted works in training Claude; partial motions to dismiss and fair use questions pending (placeholder).

Authors allege Anthropic copied copyrighted books and other works to train its Claude models without permission, including works from alleged pirated sources (placeholder — verify complaint allegations).

• Does training on copyrighted works infringe the reproduction right?
• Is AI training a transformative fair use?
• Does use of pirated corpora affect fair use or damages?

Pending — no final merits holding as of last review (placeholder).

Court has addressed preliminary issues including scope of claims and fair use framing; full reasoning on training fair use remains unresolved (placeholder).

Among the first high-profile author class actions against a major LLM provider, shaping how courts frame training as copying vs. learning.