Emboldened by settlements with Apple and AT&T, inventor Judah Klausner filed a voicemail patent lawsuit on Tuesday against Google, Verizon Communications, LG Electronics, Comverse Technology, Citrix Systems, and Embarq. Anticipating the attack, Verizon filed its own lawsuit against Klausner two weeks ago in the U.S. District Court for the Eastern District of New York that seeks to have a federal judge declare the inventor's visual voicemail patent invalid.
The new case involves claims by Klausner tied to patents in various countries he began receiving in 1992 for "visual voicemail"—applying a graphical way of interacting with voicemail messages that allow it to be used like e-mail. In June, Apple, which recently popularized "visual voicemail" through its hit iPhone device, together with AT&T and eBay, the owner of Web-based calling service Skype, settled a patent suit filed last December by Klausner. Klausner previously sued and won settlements from Time Warner's AOL and Vonage.
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