kickabear writes "AT&T has filed a lawsuit against Vonage, claiming patent infringement. This is the third major lawsuit to have been brought against Vonage by a major phone company. Vonage lost the previous two lawsuits, brought by Sprint-Nextel and Verizon. How much more money can Vonage afford to give away? How can Vonage educate a jury on prior art? 'It said in a filing to the U.S. Securities & Exchange Commission that AT&T is seeking injunctive relief, compensatory and treble damages and attorneys' fees in unspecified amounts. Vonage said the lawsuit was filed in the U.S. District Court of the Western District of Wisconsin on October 17.'"