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Lyon v Adobe Inc

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Case Information
Case name Lyon v. Adobe Inc[1]
Court U.S. District Court for the Northern District of California[1]
Docket 3:25-cv-10732-JSC; consolidated with 3:26-cv-01218-JSC[2]
Filed December 16, 2025[1]
Judge(s) Jacqueline Scott Corley[2]
Plaintiffs Elizabeth Lyon; Arthur Kleiner (consolidated complaint)[2]
Defendants Adobe Inc.[1]
Case type Proposed civil class action[1]
Claims / issues Copyright infringement involving SlimLM and book-training datasets[1]
Status April 22, 2026 consolidated complaint; Adobe answered May 22, 2026. Later developments have not been verified.[2][3]

Lyon v. Adobe Inc is a proposed civil class action in U.S. District Court for the Northern District of California.[1]

Claims and issues

Copyright infringement involving SlimLM and book-training datasets.[1]

Procedural history

April 22, 2026 consolidated complaint; Adobe answered May 22, 2026. Later developments have not been verified.[2][3]

The consolidated complaint identifies Elizabeth Lyon and Arthur Kleiner as plaintiffs and concerns Adobe’s SlimLM language models and book-training datasets.[2]

See also

References