Michael Jackson's lawyer has said the star will sue for the return of memorabilia sold to a European buyer.
Jackson is fighting to have the memorabilia returned
The items were sold as part of a Jackson family collection by Henry Vaccaro Sr, who was awarded them after a bankruptcy legal case.
A Los Angeles court ruled last week that Mr Vaccaro Sr could not sell on Mr Jackson's possessions.
But Mr Vaccaro Sr admitted he had already sold the goods to a European buyer for more than £792,000.
Jackson's lawyer Brian Wolf said the possessions should never have been included in the goods given to Mr Vaccaro Sr as part of the bankruptcy settlement.
He said that the case only entitled him to property belonging to two of Jackson's brothers, Tito and Jermaine, as well as their parents.
The collection included gold-trimmed costumes, financial documents and awards, as well as one of the first outfits Jackson wore with The Jackson Five.
The pop star also won a legal fight to shut down a pay-per-view website operated by Mr Vaccaro Sr, which featured photos of the collection.
Mr Vaccaro Sr said he had spent 18 months photographing and cataloguing the collection for his website before selling it to the European buyer.
According to Jackson's lawyers, the site was shut down two weeks ago.