By Marcus Leach

The latest in a long line of attempts by the Winklevoss twins to re-open their case against Facebook founder Mark Zuckerberg has been rejected by a US court.

Cameron and Tyler Winklevoss had gone to the 9th US Circuit of Appeals in San Francisco asking for the ruling from April upholding their $65 million settlement in 2008 to be reconsidered.

Their argument claimed Facebook concealed information from them and thus they should have received more shares in the social networking site than they did.

Mr Zuckerberg continues to deny the claims that he stole the idea of Facebook from the twins.

April's ruling, by a three-man panel, allowed for the original settlement to stand, although it stopped a fresh case being opened. In this, their latest attempt, the twins asked for a full panel of eleven judges.

With this appeal rejected the twins' lawyer, Jerome Falk, said they will now appeal to the Supreme Court.

The settlement in 2008 gave them $20m in cash and $45m of stock valued at $36 a share, although the twins claim they were duped given the shares are not yet traded anywhere and were valued, internally, at a lot less.