Active Last verified: Apr 25, 2026

Andersen v. Stability AI Ltd.

Artists Sarah Andersen and others sued Stability AI Ltd., Midjourney, DeviantArt, and Runway AI, alleging direct and induced copyright infringement from using their works without permission to train AI image generators like Stable Diffusion.[1][6][7] The case proceeds under the Copyright Act, with DMCA Section 1202 claims dismissed with prejudice on August 12, 2024; earlier October 2023 orders dismissed most claims but allowed direct infringement to advance, followed by a February 2026 third amended complaint.[1][2][3][6] It is a proposed class action for U.S. copyright owners whose works trained the defendants' AI tools, serving as a key test of AI training liability.[5][6][8]

🏛️ NDCA· Case No. 3:23-cv-00201· Filed Jan 13, 2023

Summary

Artists Sarah Andersen and others sued Stability AI Ltd., Midjourney, DeviantArt, and Runway AI, alleging direct and induced copyright infringement from using their works without permission to train AI image generators like Stable Diffusion.[1][6][7] The case proceeds under the Copyright Act, with DMCA Section 1202 claims dismissed with prejudice on August 12, 2024; earlier October 2023 orders dismissed most claims but allowed direct infringement to advance, followed by a February 2026 third amended complaint.[1][2][3][6] It is a proposed class action for U.S. copyright owners whose works trained the defendants' AI tools, serving as a key test of AI training liability.[5][6][8]

Case details

Court
NDCA
Docket number
3:23-cv-00201
Filed
Jan 13, 2023
Status
Active

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