**Czech senators opposed to the EU’s Lisbon Treaty have filed a new complaint against it with the country’s constitutional court.**The complaint could create a new delay to treaty ratification, even if Irish voters back the treaty in a referendum on Friday.
Czech President Vaclav Klaus, a Eurosceptic, says he will not sign the treaty until the court decides.
The treaty cannot take effect unless all 27 EU member states back it.
The Czech court has rejected previous complaints about the treaty, which is aimed at streamlining EU institutions to improve decision-making in the enlarged bloc.
But it could take the court as long as six months to deliver its verdict on the new complaint, the BBC’s Rob Cameron reports from Prague.
Seventeen Eurosceptic senators signed the latest petition, despite the fact that the Czech parliament has approved the treaty.
The senator who lodged the new complaint, Jiri Oberfalzer, told the BBC it centred on persisting concerns that Lisbon infringed upon Czech sovereignty.
He and his colleagues want the court to decide whether the treaty forms the legal foundations for the creation of a European superstate. If it does, they say, then it clearly violates the Czech constitution.
A further threat to Lisbon would emerge if it is not ratified in time for the UK general election, expected next April or May, which the British Conservatives are favourites to win. They have pledged to put Lisbon to a UK referendum if it is not yet in force.
The treaty’s opponents say it undermines national sovereignty and concentrates too much power in Brussels.