Singthong Buachum, a lawyer for the Pheu Thai Party, said he submitted the petition asking the Constitution Court to deliberate and reject three petitions filed by the Office of the Ombudsman, the Election Commission (EC) and Thaworn Senneam, a key anti-government protest leader.
The Office of the Ombudsman was seeking the court's ruling on the constitutionality of the February 2 general election.
The EC asked the court to rule on whether a new Royal Decree on election is needed for the poll in the 28 constituencies in eight southern provinces where there were no MP candidates.
The EC has also asked the court whether the election agency violated the Constitution by holding the general election after it failed to organise the election for all constituencies nationwide and could not announce the election result to get 95 per cent of overall MPs within 30 days for the opening of Parliament.
Mr Thaworn, a leading member of the People’s Democratic Reform Committee (PDRC) and former Democrat MP, was seeking the court's decision on the status of the caretaker government and whether the protesters' demand for a neutral prime minister was breaching the Constitution.
Mr Singthong said that the election could not be completed and Parliament could not open because protesters obstructed candidate registration procedures.
He also asked the Constitution Court to dissolve the Democrat Party and ban its executive members from politics for five years for allegedly helping the PDRC obstruct eligible voters from voting.