Absence of consent, incompetence, mistake and consanguinity may all be grounds for annulment.423 Grounds for annulment vary from province to province.424 In addition, an annulment of a marriage is generally retroactive to the date on which it took place.425 Finally, it is also important to emphasize that, compared with divorce, the evidence necessary for an annulment is difficult to produce, so that annulments are rarely granted.
De plus, en général, la déclaration de nullité du mariage rétroagit au jour de la célébration425. Enfin, il importe de souligner que, comparativement au divorce, la preuve nécessaire à l’annulation d’un mariage demeure difficile à faire, de telle sorte qu’elle est rarement octroyée.