LONDON—Stability AI won a largely favorable ruling in a closely watched U.K. case brought by Getty Images, as a High Court judge rejected secondary copyright claims tied to the training of the Stable Diffusion model and found only limited trademark liability over watermarked outputs. Getty—having withdrawn its primary copyright claims during trial—called the decision a victory for IP owners, while Stability said it resolves core copyright concerns. Getty shares fell about 3% premarket. The dispute underscores the escalating clash between AI developers and content owners, with parallel suits against Meta and Midjourney and a continuing U.S. case by Getty against Stability likely to shape the boundaries of AI training and IP rights.





























