The lawyer representing Golden Dawn leader Nikos Michaloliakos argued in court on Thursday that the charges against him are not valid and that he is the victim of political persecution.
Takis Michalolias claimed that the case against his client, who is accused of heading a criminal gang, should be dropped.
Judge Maria Lepeniotou rejected his appeal and also denied a request for the live broadcasting of the trial.
The judge said she would only allow photographers into the courtroom.
The trial was adjourned and is due to resume on July 14.