A defense lawyer in the Pirate Bay file-sharing case says he will demand a retrial after media reports that the judge was a member of a copyright protection organization.

Four men behind the notorious Web site were convicted of helping others commit copyright violations and were given one-year prison sentences last week.

Swedish Radio reported Thursday that Judge Tomas Norstrom is a member of a Swedish copyright group and that two people who represented the entertainment industry during the trial also are members of the organization.