Five Parramatta Eels officials who took the NRL to court after their registrations were suspended following alleged salary cap rorting have lost their bid to have the suspensions declared invalid.

Eels directors Steven Sharp, Tom Issa, Peter Serrao as well as chief executive John Boulous and general manager of football Daniel Anderson have until tomorrow to show cause why they shouldn't be permanently deregistered following a breach notice served on May 3.

The club has until Friday to answer the 64-page breach notice. The NRL has said sanctions available to it include docking competition points and a $1 million fine.

The so-called "gang of five" challenged their interim suspension on the basis that the NRL was obliged, as a matter of procedural fairness and natural justice, to give them notice of the suspension and the opportunity to be heard.