There are, however, measures that can be taken to prevent a decision from being annulled even before the end of the limitation period, in particular confirmation and regularisation.
Read the article by Sébastien HAREL, partner, in a dossier entitled "La nullité des décisions sociales" ("The nullity of corporate decisions") in the LexisNexis journal Actes Pratiques et Ingénierie Sociétaire.