A merger or demerger may be declared null and void only if the deliberations of one of the meetings that decided on the merger or demerger are null and void or if the declaration of conformity referred to in Article L. 236-17 has not been filed. Where it is possible to remedy the irregularity likely to result in nullity, the court hearing the action for nullity of a merger or demerger shall grant the companies concerned a period in which to rectify the situation.
.