Questão jurídica principal
Whether the entry-ban decision was void because notification failed at the old French address.
Decisão extraída
The irregular initial notification did not nullify the decision because it later reached the appellant, who could exercise his rights without prejudice.
Fundamentação extraída
A notification defect leads to nullity only if it causes prejudice or prevents the addressee from acting. Here the decision eventually reached the appellant and achieved its purpose.