Spain’s Constitutional Court has partially ruled Catalonia’s sovereignty claim as illegal.
Lawmakers in the northern region last year adopted a declaration of self determination, calling for a referendum.
The Madrid court said they have no right to infringe Spain’s constitution.
Catalan’s President Artur Mas who has promised to hold a vote on November 9 has been encouraged by a groundswell of public support for his separatist policies.
However both Madrid and the European Union oppose the idea of full independence.