The Duke of York is being urged to fight back with "every ounce of energy" against allegations made in US court documents by a woman who claimed she was forced to have sex with him while she was still a minor. Harvard law professor Alan Dershowitz - who is also named in the court papers - said the claims against him were part of a pattern of "made-up stories" by the woman and her lawyers against prominent people. He said that he would not rest until he had shown that the claims regarding his conduct were false and he advised the Duke to do everything in his power to clear his name. Buckingham Palace has denied the Duke of York has committed any impropriety after he was reportedly named in US court documents related to a convicted paedophile "My only feeling is, if she's lied about me, which I know to an absolute certainty she has, she should not be believed about anyone else," he told the BBC Radio 4 Today programme. "We know she's lied about other public figures including a former prime minister and others who she claims to have participated in sexual activities with, so I think it must be presumed all her allegations against Prince Andrew were false as well. "You cannot allow these allegations to hang above you. The first question you have to ask yourself when you are charged with a crime like this is 'Is there any conceivable possibility you did it?' and if the answer to that is 'no', you have to fight back with every resource and ounce of energy available to you." Buckingham Palace last night took the unusual step of releasing a strongly-worded statement categorically denying any impropriety by Andrew with under-age minors. The claim by the woman is part of a lawsuit in connection with American billionaire and convicted paedophile Jeffrey Epstein - a former friend of the Duke . Andrew was photographed with Epstein in New York two years after the American's release from prison in 2009, and their friendship was a source of controversy. EF