Unified Patents is seeking prior art for claim 1 of US 8,490,123, which belongs to non-practising entity SISVEL. The '123 patent purports to disclose an invention that can "generate a user profile and recommendations on the basis of the user’s previously created playlists and properties derived from them." (see attached complaint from US district court). SISVEL has asserted this patent in US district court against Rhapsody and Spotify. One of the complaints from court is attached for your reference. You can also download the complaint here: https://drive.google.com/open?id=1iZLoH34AdKzzTESMuUcCupugkvhdY91Z This patent has also been challenged at the PTAB. You can find the filings at the PTAB here: https://portal.unifiedpatents.com/ptab/case/IPR2019-00522 ** PLEASE READ THE RULES FOR THIS CONTEST BEFORE YOU DECIDE TO PARTICIPATE. ** ** TO QUALIFY FOR CONSIDERATION, A CLAIM CHART IS REQUIRED. ** ** PRIOR ART THAT HAS BEEN PREVIOUSLY CITED DURING PROSECUTION --OR-- DURING A PTAB PROCEEDING WILL NOT BE CONSIDERED. **