I've heard the Satrini rip-off but do you think they really meant to steal it from him, it sounds more like they came up with a part that was severely similar. I'm pretty sure it was Viva la Vida and I hate that particular songs anyway. I don't think they're similar to Radiohead now that I've listened and gotten into Coldplay. Other than that lawsuit which I'm gonna leave in the skeptic category they don't steal music from other people, Oasis definitely has stolen way more than Coldplay.
Digging: Sigur Ros - Ágætis Byrjun