When patent troll Acacia sued Red Hat in 2007, it ended with a bang: Acacia’s patents were invalidated by the court, and all software developers, open-source or not, had one less legal risk to cope with. So, why is the outcome of Red Hat’s next tangle with Acacia being kept secret, and how is a Texas court helping to keep it that way? Could the outcome have placed Red Hat in violation of the open-source licenses on its own product?