Apple sued over iPhone voicemail patent

Fairfax

PATENT PROBLEM: Apple is being sued for $470 million for allegedly infringing on a patent for visual voicemail on its iPhone smartphone.

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Klausner Technologies has filed a $US360 million ($NZ470 million) suit against Apple and AT&T in the US over voicemail patents that Klausner claims the Apple iPhone infringes.

New York-based Klausner said the lawsuit also names Comcast Corp, Cablevision Systems Corp and eBay Inc's Skype as infringing its patent for "visual voicemail." The plaintiff seeks an additional $US300 million from the three.

Klausner said in a statement that it filed the lawsuit in U.S. Court for the Eastern District of Texas. A copy of the filing was not yet available from the court.

The suit alleges asserts that the defendants' Internet-based voicemail products and services violate a Klausner patent. It seeks damages and future royalties estimated at $US300 million, according to the press release.

The complaint involves US patent 5,572,576, the same one at issue in a suit Klausner filed in 2006 against voice-over-Internet telephone service provider Vonage Holdings Corp. The two sides agreed to settle that earlier case in October 2007, according a spokesman for Klausner.

Vonage is now a licensee of Klausner's voicemail technology for its Vonage Voicemail Plus service, as is Time Warner's AOL for its AOL Voicemail services, Klausner said.

Klausner sued Apple over different patents involving the Apple Newton in the mid-1990s, a spokeswoman said. Apple later agreed to a licensing deal with Klausner, she said. The new suit naming Apple as a defendant targets the sleek visual voicemail application offered by Apple in its iPhone.

The company alleged in its statement that Cablevision's Optimum Voicemail, Comcast's Digital Voice Voicemail and eBay's Skype Voicemail violate Klausner's patent by allowing users to selectively retrieve and listen to voice messages via message inbox displays.

An Apple spokeswoman said the company does not comment on pending litigation.

EBay spokesman Hani Durzy said his company has not received the suit and would not comment until its lawyers have seen it.

"We haven't seen it," echoed a Cablevision spokesman, who declined to comment further.

The suit was filed for the plaintiff by the California law firm of Dovel & Luner in Texas. "We have litigated this patent successfully on two prior occasions," Greg Dovel of Dovel & Luner, said in the statement issued by Klausner.

- Reuters