Egypt's Supreme Constitutional Court on Thursday (June 14th) overturned the country's political isolation law and ruled that some of the articles in the law governing parliamentary elections are illegal, AFP reported.
The head of the constitutional court, Faruq Sultan, told AFP the decision "voids" parliament and must be respected by the authorities.
"The court affirmed in the details of its verdict that the parliamentary elections were not constitutional, and the entire composition of parliament has been illegitimate since its election," the official Middle Eastern News Agency (MENA) reported.
The final phase of Egypt's parliamentary elections concluded in January.
The ruling Supreme Council of the Armed Forces had decided on a complex electoral system in which voters cast ballots for party lists, which made up two-thirds of parliament, and for individual candidates for the remaining seats.
The individual candidates were meant to be "independents" but members of political parties were subsequently allowed to run.
That decision was challenged in court.
The other law in question, the political isolation law, barred top officials who served under former President Hosni Mubarak from running for public office.
Its overturning by the court clears Ahmed Shafiq, the last prime minister under Mubarak, to run for president.
The court's ruling comes just two days before the presidential runoff between Shafiq and Muslim Brotherhood candidate Mohamed Morsi.