The first major western judgment on generative AI and IP: Getty’s UK claims over Stable Diffusion’s training on millions of its images largely failed at trial, with only a narrow trademark win on watermark outputs.
LATEST DEVELOPMENT · APR 23, 2026
At the December 2025 consequentials hearing, Getty was granted permission to appeal the ‘infringing copy’ ruling to the Court of Appeal, while Stability was refused permission to challenge the narrow trademark findings. In the US, Getty’s refiled Northern District of California case largely survived Stability’s motion to dismiss on April 23, 2026, only a DMCA false-CMI claim was dismissed, with leave to amend, and is proceeding, with no trial date yet set.
BACKGROUND
Getty alleged that Stability AI scraped over 12 million Getty photographs to train Stable Diffusion, infringing copyright, database rights and trademarks, the flagship test of whether training generative models on scraped content is unlawful. Because the training occurred outside the UK, Getty dropped its primary training-infringement claims mid-trial and pressed secondary infringement and trademark theories.
In November 2025, the High Court rejected the secondary copyright infringement claim (holding that an AI model which stores no copy of the works is not an ‘infringing copy’) and gave Getty only a limited win on trademark infringement where outputs reproduced Getty watermarks. Getty has permission to appeal that copyright ruling, and the parallel US litigation, voluntarily refiled in the Northern District of California in August 2025, does reach the training conduct and continues, as do dozens of other AI training cases worldwide.
TIMELINE
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APR 23, 2026PROCEDURALN.D. Cal. largely denies Stability’s motion to dismissTrademark infringement, false designation, dilution and unfair competition claims proceed, and Getty’s copyright claims remain in the case. Only the DMCA false-CMI claim was dismissed, with leave to amend.
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DEC 16, 2025APPEALGetty granted permission to appeal to the Court of AppealPermission granted in full on the secondary infringement (‘infringing copy’) point as novel and important. Stability was refused permission to appeal the trademark findings.
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NOV 4, 2025JUDGMENTUK judgment: secondary copyright claim fails. Narrow trademark win[2025] EWHC 2863 (Ch): model weights that store no copies are not ‘infringing copies’ under the CDPA. Extremely limited trademark findings on watermark outputs. The s.10(3) claim dismissed.
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AUG 14, 2025PROCEDURALUS case voluntarily dismissed in Delaware and refiled in the Northern District of CaliforniaNo. 3:25-cv-06891, assigned to Judge Trina L. Thompson. The refiled complaint keeps copyright, DMCA and trademark theories and adds a market-dilution theory of harm.
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JUN 25, 2025PROCEDURALGetty drops primary training-infringement and database-right claims mid-trialGetty accepted it could not show the training of Stable Diffusion occurred in the UK, leaving secondary infringement and trademark claims for judgment.
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JUN 9, 2025HEARINGUK trial opens before Mrs Justice Joanna Smith
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FEB 3, 2023FILINGGetty files parallel US suit in the District of DelawareGetty Images (US), Inc. v. Stability AI, Inc., No. 1:23-cv-00135 (D. Del.).
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JAN 17, 2023FILINGGetty announces High Court proceedings against Stability AI in London