That is very old news (and very old misreading of the news).

What happened is that some MtGOX victim tried to bypass the bankruptcy process by claiming that some of the remaining 200 kBTC in MtGOX's spoils were his property, and he was entitled to have his property back. 

(As one redditor explained, it would be like a customer of a bankrupt dry cleaner demanding to repossess his suit that he had left there for cleaning, rather than seeing it to be auctioned and the money divided among creditors.) 

But the court said nope, the bitcoins in MtGOX wallets (like the dollars in MtGOX bank accounts) were owned by MtGOX and not by the depositors, because one cannot claim ownership of specific bitcoins, but only the right to receive their value (like one cannot claim ownership of specific dollar bills or euro bills, but only the right to receive their value).  So that customer was told to file a claim and wait for his share of the spoils, like the other MtGOX victims and creditors.