In Ontario, a Certificate of Appointment of Estate Trustee^[1] is not immune from challenge once issued. Beneficiaries and other interested parties sometimes discover problems after probate has been granted. A later will surfaces, capacity becomes an issue, or material facts come to light that were not disclosed in the original application.

The procedural gateways are found in the Rules of Civil Procedure^[2].

Rule 75.04 allows the court to revoke a certificate if it was issued in error, obtained by fraud on the court, if the appointment is no longer effective, or “for any other reason.”

Rule 75.05 permits the court, on motion, to order the certificate returned while issues of validity or entitlement are determined.

Both provisions are discretionary, reflecting the court’s supervisory jurisdiction over estates.

Limitation Periods and Revocation

Although the legislation does not prescribe a fixed deadline for seeking revocation or return of a certificate, Ontario courts have consistently applied the general two-year limitation period under the Limitations Act, 2002^[3] when revocation is tied to a will challenge. In these cases, revocation is treated as consequential relief flowing from the substantive claim.

In Leibel v. Leibel, 2014 ONSC 4516^[4], a dispute between brothers over their mother’s will, the application was dismissed as statute-barred because it was brought more than two years after death. The same reasoning carried through in Birtzu v. McCron, 2017 ONSC 1420^[5]  where a widow challenged her late husband’s will after the two-year window had closed.

Likewise, Bristol v. Bristol, 2020 ONSC 1684^[6] is instructive. Her Honour Madam Justice Cory Gilmore dismissed a daughter’s post-probate will challenge and request to revoke the certificate as statute-barred, holding that the two-year Limitations Act period applies when consequential relief (revocation/removal/accounting) is sought. Elizabeth Bristol died December 6, 2016. Although the applicant filed a Notice of Objection on December 30, 2016 and a Notice of Appearance in July 2017, she did not issue her application until June 6, 2019. The court ruled that a notice of objection/appearance (and a later motion for directions) is not a “proceeding” under the Act, the limitation ran from death (or, at latest, when the applicant knew the will’s contents), and discoverability and “purely declaratory” framing did not apply. The application was dismissed, with no costs ordered given impecuniosity, and the court emphasized that fairness cannot override legislated time limits.

Discoverability and Declaratory Relief

The courts have recognized important qualifications to the strict application of the two-year rule.

The first is discoverability. In Shannon v. Hrabovsky, 2018 ONSC 6593^[7]; aff’d 2024 ONCA 120^[8] a daughter launched her challenge more than two years after her father’s death, but the court concluded that the limitation period did not begin until she obtained access to the will and its contents. The Court of Appeal upheld this reasoning, confirming that discoverability principles apply in estate contexts.

The second qualification involves the narrow category of cases where only declaratory relief is sought. In Piekut v. Romoli, 2020 ONCA 26^[9] which turned on the validity of codicils, the Court of Appeal accepted that if the applicant seeks a declaration alone, with no consequential relief such as revocation or redistribution, section 16(1)(a) of the Limitations Act, 2002 applies and no limitation period governs the proceeding.

Fraud, Concealment, and Non-Disclosure

Because probate is typically granted without notice^[10], the applicant must act with full and frank disclosure. If material facts are concealed, the court may revoke the Certificate for fraud on the court. Fraudulent concealment also suspends the running of limitation periods. In Beaudoin Estate v. Campbellford Memorial Hospital, 2021 ONCA 57^[11], the estate alleged that the hospital concealed information about treatment contributing to the deceased’s death. The Court of Appeal confirmed that fraudulent concealment prevents reliance on the two-year limitation period. The principle applies equally in probate matters where the original application was tainted by omission or misrepresentation.

Evidentiary Thresholds and the Court’s Supervisory Role

The Ontario Court of Appeal has emphasized that there is no automatic right to reopen probate. In Neuberger Estate v. York, 2016 ONCA 191^[12], a high-value estate dispute, the Court underlined the inquisitorial role of the court in supervising probate but stressed the need for a meaningful evidentiary foundation. In Bitaxis Estate v. Bitaxis, 2023 ONCA 66^[13], involving a family dispute over their mother’s estate, the Court reaffirmed that speculative allegations are insufficient. Challengers must present evidence that crosses a minimal threshold. At the Superior Court level, Martin v. Martin, 2018 ONSC 1840^[14] illustrates how targeted disclosure, such as limited medical or solicitor’s records, may be ordered to determine whether a full-blown challenge is justified before disrupting an existing grant.

Lessons from the Cases

The case law demonstrates that Ontario courts will not revoke or recall a certificate lightly. In Leibel, Birtzu, and Bristol, the claims failed because they were out of time. In Shannon, discoverability preserved the challenge, while Piekut shows that truly declaratory relief can proceed without limitation. Beaudoin Estate reinforces that fraudulent concealment can toll the running of time. Neuberger, Bitaxis, and Martin all underscore the need for a real evidentiary basis before the courts will unsettle probate.

Conclusion

Beneficiaries who believe a Certificate was wrongly granted must act promptly. If the two-year period has expired, they must be prepared to prove that discoverability delays the start of time, that their claim is strictly declaratory, or that fraudulent concealment suspended the running of the clock. For those resisting revocation, the strongest arguments lie in highlighting delay, prejudice, and the absence of credible evidence. Ontario courts continue to strike a careful balance between preserving the integrity of probate and preventing estates from being mired in speculative or stale claims.