UK High Court: landmark decision on copyright and Gen AI – Stability AI only liable for “extremely limited”, historical trade mark infringement and no UK copyright infringement

In a highly anticipated judgment handed down on 4 November 2025, the High Court held that Stability AI is not liable for copyright infringement arising from the download of copies of Stable Diffusion in the UK from online locations outside the UK (secondary infringement). Stability AI is liable however, for extremely limited, historical trade mark infringement….
By: Hogan Lovells