CCQ-1991 - Civil Code of Québec

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542.23. A child whose filiation appearing in his act of birth is not consistent with the filiation established by uninterrupted possession of status may claim his filiation before the court. Similarly, the father and mother or the parents may claim a bond of filiation with regard to a child whose uninterrupted possession of status is not consistent with his act of birth.
If the child already has another filiation established by the acknowledgement of a bond of filiation in the declaration of birth, by uninterrupted possession of status, or by the effect of the presumption with regard to the spouse of the woman or person who gave birth to him, an action to claim status may not be brought unless it is joined to an action contesting the status thus established.
2023, c. 13, s. 21.