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** FILE ** In this March 5, 2009 file photo US singer Michael Jackson announces that he is set to play ten live concerts at the London O2 Arena in July, which he announced at a press conference at the London O2 Arena. A federal judge ruled in favor of Jackson’s estate Friday Aug. 10, 2012 that a businessman who operated a website using the likeness and some of the singer’s works had infringed copyrights and should be blocked from future usage of the material. (AP Photo/Joel Ryan, File) Image Credit: AP

A federal judge ruled on Friday that a businessman working with Michael Jackson’s mother has violated copyrights owned by the singer’s estate and should be blocked from future uses of the work.

US District Judge Dean Pregerson sided with the singer’s estate in a ruling against Howard Mann and the website michaeljacksonsecretvault.com , which appeared to be inactive on Friday morning.

The estate sued Mann in January 2011, claiming he was violating copyrights and posed unfair competition to Jackson’s estate. Pregerson ruled that the website improperly used art from the film This Is It, a logo featuring Jackson and the song Destiny, as well as other material.

“In light of defendants’ past and present infringement, it is also undisputed that future violations are likely, causing ongoing harm to plaintiffs and misled consumers,” Pregerson wrote.

An upcoming trial will address damages, although the judge noted that Mann and the site probably will not be able to pay any amount because of debts.

A phone message for one of Mann’s lawyers, Lee Durst, was not immediately returned on Friday. Mann has collaborated with Katherine Jackson, who is a beneficiary of the singer’s estate, on several projects, including a book of recollections about her son. Several of the Jackson Secret Vault releases occurred at the same time as estate projects were being released, including the anniversary of Jackson’s death and the release of the album Michael in December 2010.

Mann’s attorneys recently wrote in court filings that they hoped to introduce evidence during the upcoming trial that the singer’s will was a fraud. The businessman had claimed he obtained rights to the works in a bankruptcy sale years ago, but Pregerson ruled there was no evidence that the items could be used commercially.

“The court’s ruling makes clear that Howard Mann had no right to use Michael Jackson’s intellectual property for his own benefit,” attorney Zia Modabber, who represented the estate in the case, wrote in a statement. Estate attorney Howard Weitzman said executors John Branca and John McClain are “extremely pleased” by the ruling.