Vonage has sued AT&T Corp. for trademark infringement, alleging that the name of AT&T's newly launched VOIP service is confusingly similar to its company and product name.
In its lawsuit filed last week in U.S. District Court in New Jersey, Vonage alleges that AT&T is infringing on its name by launching a VOIP service named CallVantage. Vonage also is accusing AT&T of cyber squatting for having filed a series of domain names in February that it says are similar to those owned by Vonage. Those Web addresses include variations on “callvontage” in the .com, .net and .biz domains.
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