An Egyptian court on Tuesday decided to postpone a hearing to decide whether trials of Mubarak-regime officials should be open to the media.
The court postponed the trial to 26 July.
Ali Kamal, a member of the Lawyers Syndicate who helped file the lawsuit, told reporters that imposing secrecy on the trials is socially harmful.
He compared it to giving the defendants rewards for corruption and said it is unacceptable to secretly try corrupt figures who ruined political and economic lives, as well as Egypt's social values.
A number of ex-officials from the Mubarak regime face charges of seizing public funds and squandering state resources.
In April, the Muslim Brotherhood, Egypt's largest opposition group, demanded the trials be broadcast live, arguing that victims of crimes should be aware of the sessions' details.
In 2010, Egypt's Supreme Judicial Council issued a decree denying media outlets the ability to broadcast or record trials.