Pro tip: when suing the pants off another company for patent infringement, it's a good idea to make sure you're not violating any of that same company's intellectual property. That's the lesson we imagine Sprint is learning at this very moment. Just two months after it filed a lawsuit against Comcast for getting all up in its VoIP business, the digital services company is now ready to go Comcastic on the Now Network's derriere, as it has filed a lawsuit of its own in a Pennsylvania court. While it's not directly tied into December's case, it seems oddly coincidental that this new suit came into existence so soon after Sprint fired the first shot.Comcast and subsidiary TVWorks, LLC allege that Sprint is guilt
