The nullity of the economic interest group and of its acts or deliberations may only result from a breach of the mandatory provisions of this chapter, or from one of the causes of nullity of contracts in general.
An action for nullity is extinguished when the cause of nullity has ceased to exist on the day on which the court rules on the merits at first instance, unless the nullity is based on the unlawfulness of the object of the grouping.
The articles 1844-12 to 1844-17 of the Civil Code are applicable to economic interest groupings.