On August 31, 2026, Justice Martin Castonguay of the Superior Court of Québec rendered a highly anticipated judgment in Ouellet v. Groleau (the “Judgment”), granting the defamation action brought by Cardinal Marc Ouellet against Pamela Groleau and awarding him $100,000 in damages for injury to his reputation.

The significance of this decision extends far beyond the media attention surrounding the case. It draws a clear line by reaffirming that judicial proceedings are not a shield against defamation. False allegations that are irrelevant to the litigation and made recklessly may give rise to civil liability. The Judgment also underscores that the duty of prudence is proportionate to the seriousness of the allegations being made. When a person accuses another of particularly reprehensible conduct, heightened diligence is required to ensure both the accuracy of the alleged facts and the content of the court proceedings filed on their behalf.

1.   Background

The case arose from allegations made by Ms. Groleau in the context of a class action brought against the Diocese of Québec concerning sexual assaults allegedly committed by members of the clergy. Ms. Groleau recounted four interactions with Cardinal Ouellet between 2008 and 2010, which she characterized as sexual assaults.

Following extensive media attention surrounding these allegations, Cardinal Ouellet commenced a separate defamation action, maintaining that the allegations concerning him were false and had unfairly associated him with perpetrators of serious sexual assaults against children, which constituted the vast majority of the claims advanced in the class action.

2.   The Judgment

 2.1. The Fault

The Court emphasized that allegations made in judicial proceedings do not automatically give rise to a defamation claim. However, where certain specific conditions are met, the author of such allegations may be held liable. The case law[1] requires that the allegations be:

• false;
• irrelevant to the litigation;
• made maliciously or with recklessness equivalent to malice; and
• made without reasonable and probable cause.

According to the Court, all four of these conditions were present in this case.

First, the allegations were found to be false. The Court concluded that the events described in the class action could not reasonably support a finding of sexual assault and that various aspects of the narrative had been “grossly exaggerated”[2] or altered over time.

Second, the allegations were held to be irrelevant to the class action. The Judge noted that the proceeding primarily concerned serious sexual assaults committed against children and determined that the conduct alleged against Cardinal Ouellet bore no resemblance to the circumstances described by the other class members.

The Judgment also highlights a particularly significant fact: Ms. Groleau admitted that she had never read the class action in its entirety, even though it reproduced her allegations.

The evidence showed that she had limited her review to the few pages dealing with her personal account and had not read the proceeding as a whole. The Court observed that, had she done so, she would have realized that the class action principally concerned allegations of sexual assaults committed against children by clergy members.

For the Judge, this lack of verification was far from trivial. Given the seriousness of the allegations made against Cardinal Ouellet and the specific context in which they were presented, Ms. Groleau was required to exercise a greater degree of caution and diligence.

Another noteworthy aspect of the Judgment concerns the evolution of Ms. Groleau’s account between her original complaint and the allegations ultimately included in the class action.

The Judge noted that Ms. Groleau initially described one of the incidents as involving contact with her lower back, at the edge of what she referred to as the “grey area” of the back. In the class action, however, it was alleged that Cardinal Ouellet slid his hand “down to her buttocks.”

During her testimony, Ms. Groleau acknowledged that she had never claimed that the Cardinal touched her buttocks and explained that the wording had been adopted following discussions with her lawyers and a review of an anatomical diagram.

The Court was particularly critical on this point. In its view, a reasonable person would have ensured that court pleadings accurately reflected their version of events, especially where the allegations amounted to accusing another person of sexual assault. The Judge concluded that Ms. Groleau could not simply shift responsibility to her lawyers after approving the use of the allegations in the proceedings. Rather, she was required to exercise “greater caution and rigor.”[3]

The Court concludes that Ms. Groleau did not act as a reasonable person would have in the same circumstances and that, on the contrary, her “actions demonstrate a very high degree of recklessness amounting to malice.“[4]

Finally, the Judge held that Ms. Groleau’s liability stemmed not only from the allegations contained in the class action, but also from her participation in a strategy aimed at publicizing and promoting those allegations.

The Court found that Ms. Groleau took part in media appearances “to promote her story”[5] and that both her participation and her “approval of such statements”[6] formed part of the wrongful conduct that caused harm to Cardinal Ouellet’s reputation.

The Judge concluded that Ms. Groleau “chose to alter her version of the facts in order to attract public attention, but did so in a manner that amounted to recklessness, if not malice, toward Cardinal Ouellet.”[7]

2.2. The Prejudice

The Judgment also emphasizes the prejudice resulting from the context in which the allegations were made.

According to the Court, the inclusion of Ms. Groleau’s account in a class action primarily concerning sexual assaults committed against minors had the effect of associating Cardinal Ouellet, in the eyes of the public, with child sexual abusers. The Judge described this association as an “infamy”[8] and held that it harmed his reputation, integrity, and moral authority.

The evidence further demonstrated that the allegations generated a “media tsunami”[9] throughout Québec, across Canada, and internationally. The Judge concluded that Cardinal Ouellet’s integrity and moral authority had been “significantly”[10] affected by Ms. Groleau’s wrongful conduct.

3.   Key Takeaways from the Judgment

The Judgment serves as an important reminder of the principles governing access to the courts and the limits of immunity for allegations made in judicial proceedings. Two lessons are particularly noteworthy.

3.1. Judicial Proceedings Are Not Immune From Defamation Claims

The Judgment confirms that merely making allegations in a court proceeding does not grant absolute immunity to their author. While courts recognize the fundamental importance of access to justice and the right to assert one’s claims, these protections do not permit parties to advance allegations that lack a sufficient factual basis or are made without the required degree of caution.

In other words, a party who chooses to place another person’s reputation at issue in a pleading must ensure that the allegations are grounded in serious and verifiable information. The right to bring legal proceedings carries a corresponding obligation to act in good faith and with diligence.

3.2. The More Serious the Allegation, the Greater the Duty of Diligence

The Judgment reaffirms an important principle of defamation law: the degree of diligence required varies according to the seriousness of the allegations being made.

When a person accuses another of particularly reprehensible conduct, such as sexual assault, the potential consequences can be profound, both personally and professionally. In such circumstances, courts expect the author of the allegations to exercise heightened rigor before asserting them.

This requirement is especially significant in an era where allegations can spread rapidly and have lasting consequences for the individual concerned. The Judgment therefore confirms that the more serious the accusation, the greater the obligation to verify the facts and exercise prudence before making them.

4.   Conclusion

Ultimately, the Judgment serves as an important reminder that the right to access the courts, fundamental though it may be, is not absolute. A party who chooses to impugn another person’s reputation in judicial proceedings must ensure that the allegations advanced are supported by a sound factual foundation and are relevant to the issues in dispute.

The Judgment also confirms that the duty of prudence is proportional to the gravity of the allegations being made. When an individual accuses another of particularly serious misconduct, greater diligence is required to verify both the underlying facts and the accuracy of the pleadings filed in their name. The Court’s message is clear: the greater the potential harm to a person’s reputation, the more exacting the duty of diligence becomes.

[1] L.B. v. Sheehy, 2025 QCCS 759; S.B. v. Ostiguy, 2021 QCCS 3453

[2] Par. 253, Judgment.

[3] Par. 184, Judgment.

[4] Par. 261, Judgment.

[5] Par. 263, Judgment.

[6] Id.

[7] Par. 271, Judgment.

[8] Par. 238, Judgment.

[9] Par. 159, Judgment.

[10] Par. 268, Judgment.