blane.bramble writes "The Register reports that Sony cannot patent inventions in the UK that remove the anonymity of the peer-to-peer (P2P) user experience. Sony tried to patent a method of passing around user reviews of shared files, but the UK Patent Office rejected it, and then rejected it again on appeal. The article indicates the patents were rejected because the 'inventions' were not eligible for patenting. " From the article: "When a P2P user downloads a piece of content from another user's computer, be it a song or a game or a movie, he normally knows nothing about that user - or where that user obtained the content. Sony's proposal would change that experience. Sony describes a method for attaching a user history to content when it is shared among computers or other devices. When one user downloads a song, he can see who had it last and what he thought about it."