I suggest you google Notthebom leading case of the International Court of Justice.
There is in fact a procedure but they notify you at you former address and you never notice it. The story that was told is from a client of mine who got citizenship in 2000 by one of the fake sentences of Court...
It is not. Immigration law says clearly you are a tourist if you are here 180 days a year. If you stay more you are an inhabitant with the right to get citizenship. This is the 7/5 rule developed by Court 2 and the Sala III of the Chamber of Appeals that the other 2 does not recognize.
This is the first hierarchy decision and the deadline for the appeal is not even over. 2 of the 3 rooms of the Chamber of Appeals accepts to revoque sentences like this one of the applican shows up at Court.
This is not entirely true. There are new leading cases where if the case was rejected and the applicant show up at the chamber of appeals, the judge decide on the actual facts, that he Is back.