"The ruling," lawyer Khaled Abu Bakr said, "has no actual effect on the ground."
The Supreme Constitutional Court was acting in response to lawsuits filed against both the upper house, known as the Shura Council, and the 100-member constitutional committee.
Despite its ruling, the court said the Islamist-dominated Shura Council would continue to serve as the country's main legislative body for the time being. It also said the ruling would have no effect on the new constitutional charter, which was voted into effect in a popular referendum last December, because the charter is a representation of the popular will.
Still, the decision reflects a deepening rift between the country’s judicial authority and President
The court said the Shura Council could be dissolved only when a new lower house of parliament is elected. The lower house, known as the People's Assembly, was dissolved in June 2012, days before Morsi was sworn into office.
Many in Egypt's opposition were dismayed by the court's decision to maintain the Shura Council's legislative role, and some proposed the drafting of a new constitution.
“Back to square one: Shura council & constituent assembly declared unconstitutional. Consensus on new constitutional frame work only way out,” opposition leader
Morsi's office issued a statement saying all Egyptians are committed to "defend, protect and respect" the constitution.