News Lyon Kleiner Adobe Consolidated 2026

April 22, 2026 — Book Authors Lyon and Kleiner File Consolidated Copyright Complaint Against Adobe

Book authors Lyon and Kleiner filed their consolidated copyright complaint against Adobe Inc. on April 22, 2026, combining their previously separate claims into a single legal action. The consolidated complaint alleges that Adobe trained its AI models on copyrighted works without authorization.<ref name="chatgptiseatingtheworld-lyon">ChatGPT is Eating the World, April 24, 2026</ref>

The consolidation follows the earlier filing of the Kleiner v. Adobe Inc. lawsuit on February 9, 2026, which alleged that Adobe used unlicensed copies of copyrighted works from the RedPajama dataset (containing the Books3 corpus) to train its SlimLM small language models.<ref name="chatgptiseatingtheworld-lyon" />

Significance

The consolidated complaint streamlines the copyright litigation against Adobe, combining related claims from multiple authors into a single proceeding. The same day also saw the filing of a novel shareholder derivative action (SEIU Pension Plan Master Trust v. Narayen) against Adobe executives over the company AI training practices, creating a dual-track litigation risk for Adobe on the copyright issue.<ref name="chatgptiseatingtheworld-lyon" />

See Also

• Kleiner v Adobe Inc — Original Kleiner copyright case page
• April 24, 2026 — SEIU Shareholder Derivative Suit v. Adobe Executives
• Cases — Active AI litigation tracker

References

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