Depends on how sloppy and bullheaded they are.  In this case, the defendant had already paid to license these patents, and the troll evidently dragged its feed in dealing with its mistake.  A bit akin to <i>The SCO Group v. The Universe</i>, in which they didn&#x27;t have the rights to UNIX(TM).<p>No way is a good judge going to let this off with a &quot;mistakes were made&quot; attitude.