Vodafone is rubbing more salt in the wounds of Vonage after its dismal IPO. Verizon Service and Verizon Laboratories have slapped Vonage with patent infringement lawsuits, claiming the company infringed on seven patents related to VoIP technology. Vonage said it was surprised by the lawsuit and will "vigorously defend" the lawsuit.

To read more about the patent infringement lawsuit against Vonage:
- take a look at this article from The Wall Street Journal (sub. req.)