A lawyer for Michael Jackson's Estate has branded new claims of sexual abuse against the star ''outrageous and pathetic''.

Choreographer Wade Robson - a witness in the late singer's 2005 child molestation trial who insisted he had never been inappropriately touched by the 'Billie Jean' star - has filed court documents to the estate seeking compensation for childhood sexual abuse, but Howard Weitzman believes the allegations won't stand up in court.

The lawyer said: ''Mr. Robson's claim is outrageous and pathetic. This is a young man who has testified at least twice under oath over the past 20 years and said in numerous interviews that Michael Jackson never did anything inappropriate to him or with him.

''Now, nearly four years after Michael has passed, this sad and less than credible claim has been made.

''We are confident that the court will see this for what it is.''

According to Wade's lawyer, the choreographer - who has worked with the likes of Britney Spears and Justin Timberlake - has decided to come forward about his alleged seven-year ordeal now because he ''collapsed'' under the strain last year.

Henry Gradstein told TMZ: ''Last year, on a career trajectory that was off the charts, [Wade] collapsed under the stress and sexual trauma of what had happened to him for seven years as a child.

''He [Wade] lived with the brain washing by a sexual predator until the burden of it all crushed him.''

And the lawyer claims Michael - who died of acute Propofol intoxication in June 2009 - was a ''monster'' who threatened Wade to keep him quiet at the time of the alleged abuse, which he claims took place from the age of seven.

The lawyer claims Michael told Wade: ''If anyone ever finds out about what we did we will go to jail for the rest of our lives.''

Mr. Gradstein added: ''This kind of intimidation of a child by a sexual predator is tragically characteristic and effective, keeping them quiet about the abuse - often for a lifetime.

''Michael Jackson was a monster and in their hearts every normal person knows it.''

The claims to the Michael Jackson Estate have been filed under seal, meaning they are not available to the public.