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Klausner Sues VoIP Giants Over Voicemail Patent

New York — VoIP technology firm Klausner Technologies launched a legal broadside against three of the VoIP industry’s largest firms — Comcast, Cablevision and the eBay-owned Skype.

Klausner claims the companies’ voicemail-to-email systems infringe on Klausner’s visual voicemail patents. The company has already successfully litigated against Time Warner (for its AOL Voicemail) and Vonage. Both companies currently license Klausner’s voicemail technology.

According to Klausner, damages and future royalties from the suit are estimated at $300 million.

The suit has been filed in a federal court in the Eastern District of Texas.