Elon argued that even though the events in question took place sometime between 2017 and 2020 OpenAI intentionally hid the information from him until 2022-2023 which is why he wasn't able to file the lawsuit until 2024.

That's what the jury found against - they said he was reasonably informed enough to have brought the suit earlier and thus the 3 year clock should start ticking in 2020 not 2023.