For Fun, Let's Sue TiVo

Has TiVo become the Rodney Dangerfield of the electronic industry; no respect.  It seems that everyone loves to sue TiVo.  Although TiVo likes to sue others, too.  "Cisco Systems this week filed a federal lawsuit against TiVo, seeking to void four of the DVR maker's patents -- including the infamous "Time Warp" patent that Dish Network was found to have infringed -- opening a new front in the litigation battle over cable set-tops."  Is there a real case here or is it an attempt to continue to delay until frankly the technology becomes outdated itself.  If anything all these lawsuits will certainly keep the lawyers busy and happy.