April 18, 2011 5:08 PM

Winklevosses appeal Facebook settlement ruling

Tyler and Cameron Winkelvoss attend

Tyler and Cameron Winkelvoss attend "The Social Network" Paris premiere. (Julien M. Hekimian)

SAN FRANCISCO - A Facebook lawsuit at the heart of the Hollywood blockbuster "The Social Network" lives on.

Two former Harvard University classmates of company founder Mark Zuckerberg asked a federal appeals court Monday to reconsider its order that they accept a settlement over the website's creation.

Tyler and Cameron Winklevoss initially claimed Zuckerberg stole their idea for Facebook but agreed to drop their lawsuit in 2008 in exchange for $20 million in cash plus stock in the company.

The twins say they later discovered the stock was worth less than claimed at the time, and they sought to have the deal voided.

A three-judge panel of the 9th U.S. Circuit Court of Appeals ruled against the Winklevosses last week. Their lawyers have asked for a special 11-judge panel to consider their appeal.

The federal court said last week that Winklevosses were savvy enough to understand what they were agreeing to when they signed the agreement in 2008. The deal called for a $20 million cash payment and a partial ownership of Facebook. A third classmate, Divya Narendra, was part of the settlement with the twins but did not pursue the second lawsuit seeking to undo the agreement.

The settlement is now worth more than $160 million because of Facebook's increased valuation.

"At some point, litigation must come to an end," chief justice Alex Kozinksi wrote for the unanimous three-judge panel "That point has now been reached."

© 2011 CBS Interactive Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.
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