This claim has been brought by Getty Images against AI image generator Stability AI in the UK High Court.
Getty Images' claim (as summarised in its press release when commencing the claim) is that, through its Stable Diffusion model (under the name DreamStudio), Stability AI has "unlawfully copied and processed millions of images protected by copyright and the associated metadata owned or represented by Getty Images absent a license to benefit Stability AI's commercial interests and to the detriment of content creators".
The claims relate to copyright infringement, database right infringement, and trade mark infringement and passing off.
In brief, Getty Images claims that Stable Diffusion was trained using various subsets of the LAION-5B Dataset which was created by scraping links to photos and videos and associated captions from various websites: Getty Images claims that Stable Diffusion 1.0 was trained using around 12 million visual assets (of which around 7.3 million are copyright works) from Getty Images websites. It further claims that Stable Diffusion 2.0 was trained using around 7.5 million visual assets (of which around 4.4 million are copyright works) from Getty Images websites.
Getty Images also claims that in some cases the synthetic image produced by a user comprises a substantial part of one or more of its copyright works and/or visual assets, suggesting that Stable Diffusion sometimes memorises and generates very similar images to those used to train it. In some cases, the synthetic images produced bear the GETTY IMAGES and ISTOCK signs as a watermark.
Getty Images seeks to restrain the Defendant from doing a number of acts in the UK, without a written licence or agreement from Getty Images.
Stability AI applied for summary judgment / strike out in respect of certain aspects of Getty Images' claim. In particular, it argued that, as the evidence indicated that the training and development of Stable Diffusion took place outside the UK, the claim relating to copyright and database right infringement in that process was bound to fail. On 1 December 2023, the Court rejected Stability AI's application. Whilst the evidence referred to would on its face provide strong support for a finding that no development or training had taken place in the UK, there was other evidence pointing away from that conclusion, as well as a number of unanswered questions and inconsistencies in the evidence. Accordingly, the Court allowed that claim to proceed to trial, alongside a claim for secondary infringement of copyright which again the Court concluded could not be determined on a summary basis.
On 27 February 2024, Stability AI filed its Defence. In summary, it denies that:
- Development and training of the Stable Diffusion models infringed any of Getty Images' IP rights on the basis that the models were trained and developed outside the UK.
- Making the Stable Diffusion model checkpoints available for download on GitHub or Hugging Face, or for use via DreamStudio, involves any acts of secondary infringement (because Stable Diffusion is not an infringing copy, is not an article, and has not been imported into the UK by Stability).
- Use of Stability Diffusion by users gives rise to claims of infringement. In particular, it argues that the examples of infringing outputs relied upon were generated by 'wilful contrivance using prompts corresponding exactly or substantially to captions' for Getty Images' works. It further asserts that the act of generating outputs is that of the user (over whom it has no control or knowledge of its prompts), not Stability; it has not made any use of the Getty trade marks in the course of trade; and it is entitled to rely upon caching and hosting safe harbours.
Interestingly, Stability AI also assert that to the extent that any images do include any element of a copyright work, it is possible to rely upon the fair dealing defence for the purposes of pastiche (a defence which has not yet been the subject of significant judicial commentary, other than in the Shazam case relating to Only Fools and Horses).
As part of the claim, the sixth Claimant brought a representative action on behalf of all the owners of artistic works and films licensed on an exclusive basis to the first Claimant.
In a decision dated 14 January 2025, Mrs Justice Joanna Smith concluded that the representative claim should not be permitted to continue under CPR 19.8. The proposed class definition was "owners of … copyright … works … the copyright in which has been infringed … that can be identified on the basis that (i) they have entered into an exclusive license with the First Claimant…; and (ii) the … works include works which were used to train [the AI model]". However, that definition was dependent on a disputed issue (whether copyright had been infringed), and so it was not possibly to satisfactorily identify the members of the class before a judgment on liability. Further, while Stability had admitted that some images had been used to train the AI model, the question of which works had been used was not a question that could currently be determined. There was therefore no basis on which the Court could be satisfied that any particular person qualified as a member of the class proposed, or that it therefore had jurisdiction to permit the representative claim. Even if that was wrong, the judge was not persuaded that the claim should be permitted to proceed, given the absence of clear proposals as to how the representative claim should be dealt with at trial, whether samples would be used and extrapolated, and whether (and if so how) any individualised assessments required were to be bifurcated.
The judge went on to refuse permission for the action to continue under CPR 19.3(1) in the absence of joinder of owners of copyright works with whom the Claimants have concurrent rights of action (which provides that all persons jointly entitled to the remedy claimed by a claimant must be parties unless the court orders otherwise). Noting that there seem to be very few cases on the point, the judge rejected the submission that a failure in relation to CPR 19.8 necessarily precludes a party from relying on CPR 19.3 (and indeed, in this case the judge considered that an order under CPR 19.3 would, in theory, make very good sense). However, given the current absence of proper evidence as to the potential prejudice to Stability, it was not an application the Court could accede to at this stage.
Subsequently, the Claimants applied for an order allowing a representative action under CPR 19.3 and s.102(1) of the Copyright, Designs and Patents Act 1988 on behalf of individuals who are parties to the exclusive licence agreements with Getty, without those individuals being joined as parties. This order was granted on the basis that Getty undertake to indemnify Stability AI against all damages and legal costs that Stability reasonably incurs as a result of any subsequent copyright infringement proceedings against it by any copyright owner who is jointly entitled to the remedies claimed by Getty as a result of being party to any of the exclusive licence agreements. Getty has also undertaken to take reasonable steps to assert and enforce right to control claims clauses in the exclusive licence agreements.