The European Parliament proposes to officially recognise three Catalan leaders as MEPs next week, following a decision by the European Union's top court.

A leaked internal note issued by the European Parliament says politicians will "take note" of the election of former Catalan president Carles Puigdemont, former vice-president Oriol Junqueras and former minister Toni Comin during a plenary sitting next week, with effect from July 2 2019.

The European Parliament's communication service said the full accreditation as MEPs of Junqueras, Puigdemont and Comin "will be processed by EP administration without any further delay".

The move follows a decision last month from the EU's top court, the European Court of Justice (ECJ), which overturned a ruling preventing Puigdemont and Comin from taking their European Parliament seats.

READ MORE: Fresh calls to free Catalan indy leader Oriol Junqueras

The two are wanted in Spain for their role in the 2017 independence bid, which Spin declared illegal, by the Catalan government and separatist politicians.

They fled in exile to Belgium after the attempt failed and were elected to the European Parliament in May as representatives of Catalan separatist parties from Spain.

The ECJ also ruled that Junqueras, a former Catalan regional vice-president serving a prison sentence in Spain for his role in Catalonia's banned independence referendum, had earned the right to immunity when he was elected as an MEP alongside Puigdemont and Comin.

A Spanish court sentenced Junqueras in October to 13 years in prison for sedition.

Spain's state attorney has called for Junqueras to be released temporarily so he can be sworn in as a member of the EU's legislative body.