Is it possible for Vonage to have even more bad news? Absolutely. Despite the firm forking out scads of cash over to Sprint, a huge chunk of change over to Verizon as well, security concerns and even more, they still have more trouble to face.

This time. Vonage has earned the ire of Nortel who has filed a lawsuit against the company over, you guessed it, patent violations. Whether that is now the hip thing to do or Nortel really does feel violated, they are asking for compensation due to infringements in the areas of 911 and 411 calling, click to call and more. It isn't clear how much Nortel wants out of Vonage, but there's only so much blood you can get from a stone. Even though Vonage is managing to stay afloat, they are just barely doing so. One more blow might be all it takes to send them crashing down.