The Restoule litigation centers on the Robinson‑Huron and Robinson‑Superior Treaties of 1850, in which the Anishinaabe of the Upper Great Lakes ceded more than 100,000 km² of land to the Crown in exchange for lump‑sum payments, perpetual annuities, hunting and fishing rights, and reserve lands. Crucially, these treaties included an Augmentation Clause, requiring that annuities “shall be augmented from time to time” if revenues from the ceded territory allowed the Crown to do so “without incurring loss.”
The annuity increased once, in 1875, to $4 per person. It never increased again, despite extensive resource development across the treaty territory. Over time, litigation emerged as First Nations sought a declaration that the Crown had failed to implement the Augmentation Clause and owed compensation.
Two major claims were filed: the Superior plaintiffs (2001) and the Huron plaintiffs (2014). These actions were heard together in three stages: treaty interpretation, limitations and Crown immunity, and damages.
Lower Court Decisions
Ontario Superior Court of Justice
Regarding Stage One the trial judge held that the Crown had a mandatory and reviewable obligation to increase annuities when economic conditions permitted an increase “without incurring loss.” She concluded the Augmentation Clause created both a collective entitlement and an individual entitlement, with the $4 figure acting only as an individual cap and not a cap on the collective payment. The trial judge also found that although no sui generis fiduciary duty existed, the honour of the Crown and an ad hoc fiduciary duty required diligent implementation. In Stage Two the Court rejected Ontario’s defences of Crown immunity and statutory limitation periods, concluding that limitations legislation did not bar treaty breach claims.Ontario Court of Appeal
The Court of Appeal agreed that the Crown’s obligation to consider augmentation was mandatory and reviewable, and that the $4 amount served as a soft cap, but it rejected the trial judge’s finding that the treaties guaranteed a “fair share” of Crown revenues. The Court also held there was no fiduciary duty, but confirmed the duty of diligent implementation arising from the honour of the Crown. It unanimously confirmed that limitations legislation did not extinguish the claims. Before the Supreme Court of Canada appeal, the Huron plaintiffs settled with Ontario and Canada for $10 billion, an agreement finalized and court‑approved on February 26, 2024.Supreme Court of Canada Decision
In its unanimous ruling, the Supreme Court of Canada determined that both Canada and Ontario had failed to diligently uphold the treaty promises set out in the Robinson‑Huron and Robinson‑Superior Treaties. The Court then articulated several important conclusions concerning the scope of the Crown’s obligations and related interpretive issues.Limitations and Crown Immunity
On the limitations issue, the SCC confirmed the lower courts’ conclusion that the claims were not statute‑barred. Treaty obligations are constitutional in nature rather than private law claims, and the Treaties cannot be reduced to common‑law categories such as “actions on the case” or “actions of account.” Because Ontario’s historic limitations legislation did not apply to constitutional treaty claims (and it is generally understood that the modern 2002 Limitations Act expressly excludes Aboriginal rights), the claims were properly before the courts.Treaty Interpretation and the Standard of Review
The Supreme Court held firmly that treaty interpretation is a question of law reviewed for correctness, rejecting the idea, accepted in some quarters since Sattva Capital Corp. v. Creston Moly Corp., 2014 SCC 53 that appellate courts should defer to lower‑court treaty interpretations as mixed questions of fact and law. The Court emphasized that because historic treaties are constitutional instruments, their interpretation requires national consistency, and appellate courts cannot simply defer to a trial judge’s reading of their meaning. Questions about the language of the treaties, the intention of the parties, and the legal consequences of historical context fall squarely within a court’s legal expertise and therefore demand a correctness standard. Historical fact‑finding, however, remains subject to palpable and overriding error.The Augmentation Clause
The Court clarified that the Treaties establish one unified annuity, payable to the “Chiefs and their Tribes,” rather than a dual structure divided into collective and individual components. It further held that the historic $4 figure operates as a soft cap, obliging the Crown to raise the annuity when circumstances permit, while permitting but not requiring increases beyond it.The Honour of the Crown and the Duty of Diligent Implementation
Although the Court rejected the trial judge’s finding of a specific ad hoc or sui generis fiduciary duty, it reaffirmed a powerful constraint on Crown conduct: the duty of diligent implementation, which flows from the honour of the Crown. The duty requires the Crown to periodically consider whether annuity augmentation is possible and to make decisions governed by honourable conduct rather than administrative convenience or political preference. The Court concluded that the Crown’s century‑and‑a‑half failure to revisit the annuity level violated this constitutional duty. The Court emphasized that while the honour of the Crown is not itself a cause of action, it informs and shapes the Crown’s obligations under the Treaties. If the Crown neglects those obligations, the resulting breach is a breach of the Treaties themselves.Remedy
After finding a longstanding breach of the Robinson Treaties, the Supreme Court concluded that declaratory relief alone would be inadequate. Instead, it ordered a structured remedial process aimed at implementing the treaty promise rather than merely describing it. The Court directed the Crown to engage meaningfully and honourably with the Robinson‑Superior plaintiffs to attempt to negotiate compensation for past breaches. If no agreement is reached, the Crown must, within six months of the decision, exercise its discretion to determine a compensation amount itself. The Court’s structured remedial framework reflects its expectation that the Crown’s determination of compensation must be “just and honourable,” and that any subsequent judicial review would assess both the process followed and the substance of the amount determined. The Court specified if negotiations fail and the Crown sets an amount, the Superior plaintiffs may seek judicial review of both the process followed and the substance of the determination.Conclusion
The SCC’s decision in Restoule reshapes Canadian treaty law on multiple fronts: it elevates the standard of review, clarifies the structure of treaty obligations, rejects the notion of unfettered Crown discretion, and introduces a new model for enforcing treaty promises. By grounding its analysis in correctness review, the honour of the Crown, and a structured remedial framework, the Court has provided a decision that will guide treaty litigation for decades.How Barriston Law Can Help
Barriston Law’s Indigenous Legal Department has experience advising First Nations communities on treaty rights, specific claims, and the evolving legal framework governing Crown-Indigenous relationships. Whether your community is assessing the implications of Restoule for existing treaty obligations, evaluating potential claims, or navigating negotiations with the Crown, we are available to assist.Contact Barriston Law
To learn more about how Barriston Law can support your community or organization, visit barristonlaw.com or contact our Indigenous Legal Department directly. Written by Garnik Martirosov and Bennett MarshallDisclaimer: This article is provided for general informational purposes only and does not constitute legal advice. The information presented reflects the authors’ summary of a judicial decision and is not a substitute for independent legal advice. Every community’s circumstances are unique. Readers should obtain legal advice tailored to their specific situation before taking any action in reliance on the matters discussed in this article.