Procedural rules in civil litigation can look like technicalities until they aren’t. Rule 14.08(1) of the Rules of Civil Procedure requires a Statement of Claim to be served within six months of issuance. The court has discretion under Rule 14.08(2) to extend the time. The framework for exercising that discretion was set down by the Ontario Court of Appeal in Chiarelli v Wiens, 2000 CanLII 3904 (ONCA), and it has been consistently applied for nearly a quarter century: the plaintiff bears the onus of demonstrating that the defendant will not be prejudiced by the extension; where prejudice has arisen during the delay, the extension will be denied.
Tookenay v O’Mahony Estate, 2024 ONSC 709, is a stark application of the Chiarelli framework. A medical malpractice claim brought by an amputation patient stalled because the plaintiff’s law firm did not serve the Statement of Claim within the six-month period. By the time the lawyer realized the omission and arranged irregular service almost a year later, one essential defence witness had died. By the time the motion to extend was heard, the defendant himself had become incapacitated and then died. The Ontario Superior Court of Justice held that the prejudice was significant, actual, and uncompensable. The motion to extend was dismissed. The malpractice action — which had survived limitation periods, issuance, and the initial year of investigation — was effectively over because of a missed deadline.
The case is doctrinally significant because it illustrates the operation of the Chiarelli framework in a context where the prejudice was real and not merely speculative, where the “invariable practice” doctrine made witness availability essential, and where the dead-defendant problem produced uncompensable harm.
The substantive case context
The plaintiff, Dr. Vincent Tookenay, was himself a physician. He sustained a puncture-type wound to the medial side of his right big toe on January 4, 2019. He had pre-existing diabetes and peripheral vascular disease — two conditions that materially affect foot wound healing and infection risk.
The plaintiff was a patient of Dr. O’Mahony, a family physician in Sarnia who practised in a clinic with a nurse practitioner, Ms. Melissa Georgiou. The plaintiff attended the clinic on multiple occasions between February 27, 2019, and April 25, 2019, but was seen by the nurse practitioner on most visits rather than by Dr. O’Mahony directly.
On the final visit on April 25, 2019, Dr. O’Mahony examined the patient, prescribed antibiotics, and arranged urgent surgical referrals to a cardiovascular surgeon and a vascular surgeon. On May 3, 2019, the vascular surgeon at London Health Sciences Centre diagnosed infected necrotic gangrene of the first and second toes. On May 4, 2019, the patient underwent a transmetatarsal amputation of those toes. On June 10, 2019, he underwent a below-knee amputation of the right leg.
The substantive medical issues — the standard of care for managing a diabetic patient with peripheral vascular disease and a foot wound; the involvement of the nurse practitioner versus the physician; the timing of antibiotics and surgical referrals — were classic medical malpractice questions. Whether they were answered in the plaintiff’s favour at trial was never determined. The procedural failure intervened.
The procedural timeline
The chronology is the heart of the case.
- January 23, 2020: The plaintiffs retained a lawyer to investigate the potential claim. Approximately seven months had passed since the amputation.
- April 28, 2021: The Statement of Claim was issued. The plaintiffs’ lawyers had completed a fifteen-month investigation, including obtaining medical records from various providers.
- September 13 and October 3, 2021: The plaintiffs’ lawyer received internal computer-based tickler reminders from his firm about the need to serve the Statement of Claim. There was no record of any response or action.
- October 28, 2021: The six-month service deadline under Rule 14.08(1) expired without service and without any motion to extend.
- January 31, 2022: The plaintiffs’ lawyer received an email from his legal assistant about Outlook Tasks entries from his former law clerk. The lawyer misinterpreted the entries to mean that the Statement of Claim had been served and that the file was awaiting a doctor’s review for a preliminary opinion.
- Early March 2022: Nurse practitioner Ms. Georgiou stopped working at Dr. O’Mahony’s clinic because her breast cancer had returned.
- April 6, 2022: Ms. Georgiou died. The Statement of Claim had been issued for nearly a year. The six-month service deadline had passed five months earlier. No service had been effected and no extension motion had been brought.
- July 25, 2022: The plaintiffs’ lawyer realized that the Statement of Claim had not been served.
- August 25, 2022: Approximately one month after the lawyer’s realization, a process server left a copy of the Statement of Claim in a sealed envelope for Dr. O’Mahony at his clinic. The service was irregular — it was not personal service, which is required.
- September 12, 2022: Defence counsel was retained and wrote to the plaintiff, advising that a motion to extend time for service might be necessary.
- September 21, 2022 (approximately): Within about nine days of defence counsel being retained, Dr. O’Mahony was non-verbal due to advancing Parkinson’s-related cognitive decline.
- January 16, 2023: The Statement of Claim was personally served on Dr. O’Mahony. By this point he had been incapacitated for several months. His evidence was not preserved.
- May 2, 2023: Dr. O’Mahony died.
- February 2, 2024: The motion to extend time for service was heard and dismissed.
The total delay between issuance and personal service was approximately 21 months. The delay between the expiry of the service deadline and personal service was approximately 15 months. Two essential witnesses (the nurse practitioner and the physician defendant) had become unavailable during the delay.
The Rule 14.08 framework
Rule 14.08(1) of the Rules of Civil Procedure requires service of a Statement of Claim within six months of issuance. Rule 14.08(2) gives the court discretion to extend the time on motion.
The framework for exercising that discretion was articulated in Chiarelli v Wiens. The principles can be stated as follows:
- The plaintiff bears the onus of showing that the defendant would not be prejudiced by an extension. The plaintiff cannot be expected to speculate, however, and the defendant has at least an evidentiary obligation to identify the prejudice in some detail.
- The defendant cannot manufacture prejudice by failing to take steps that could reasonably have been taken. A defendant who did not preserve evidence when they reasonably could have done so cannot complain about the unavailability of that evidence later.
- The prejudice that defeats an extension must be caused by the delay. Pre-existing prejudice (evidence already unavailable when the Statement of Claim was issued) does not count against the extension.
- An extension is not automatically denied simply because the limitation period has run. The limitation period is one factor in the analysis, not a dispositive one.
- The analysis is fact-specific. Each case turns on its own facts, focusing on whether the defendant is prejudiced by the delay.
The principles are typically supplemented by a list of practical factors: the length of the delay; the explanation for the delay; whether the explanation is sufficient; whether the plaintiff moved promptly for an extension; whether the plaintiff personally was involved in or directed the delay; whether the defendant bears any responsibility; whether it was reasonable for the defendant to infer abandonment; whether the limitation period has expired; whether the defendant had notice of the claim before the limitation period expired; and whether the defendant would be prejudiced.
The framework is concerned with the rights of the litigants more than the conduct of counsel. A plaintiff should not lose their claim because their lawyer made a procedural error — unless the procedural error has produced prejudice that cannot be remedied.
The presumption of prejudice
Where the Statement of Claim is served both late AND outside the limitation period, a presumption of prejudice arises. The presumption shifts the evidentiary burden: the plaintiff must affirmatively rebut the presumption with evidence that the defendant has not been prejudiced.
The doctrinal foundation for the presumption is the recognition that limitation periods serve substantive purposes. They protect defendants from stale claims where evidence has degraded, witnesses have died, and the equitable balance of the dispute has been disturbed. When a plaintiff has missed both the service deadline AND the limitation period, the procedural failure compounds the substantive prejudice that limitation periods are designed to prevent.
In Tookenay, the limitation issue was implicit in the facts. The two-year basic limitation period under the Limitations Act, 2002, would generally have run from the date of the amputation (June 10, 2019, or perhaps earlier) — placing the limitation expiry in approximately June 2021. The Statement of Claim was issued in April 2021 (within the limitation period) but not served until August 2022 (irregular) or January 2023 (personal) — well outside the limitation period. The presumption of prejudice attached.
The invariable practice doctrine
The “invariable practice” doctrine is doctrinally important in this case. Established in ter Neuzen v Korn and developed in subsequent jurisprudence, the doctrine recognizes that:
- Medical charting is not, and should not be, an exhaustive log of every detail of a patient interaction
- Many aspects of a patient encounter are routine and uncharted
- Evidence of a physician’s invariable or usual practice — what they “always” do in the relevant clinical situation — is admissible
- Such evidence is given significant weight at trial
- The same principle applies to nurses and other regulated health professionals
The doctrine has a critical consequence for evidence preservation: when a clinical witness dies or becomes unavailable, their evidence about their invariable practice is uniquely lost. It cannot be reconstructed from the chart, because the chart by definition does not capture it. It cannot be supplied by another witness, because invariable practice is personal to the practitioner.
In Tookenay, both Dr. O’Mahony and Ms. Georgiou were essential defence witnesses on the question of invariable practice. Their charting captured what they wrote down; their invariable practice — the standing assessments, the routine questions, the customary instructions — was uncharted and irretrievable once they were unavailable. The plaintiffs’ argument that the nurse practitioner’s evidence was available through her clinical notes failed to engage the invariable practice doctrine. The notes were not a substitute for the witness.
The “self-created prejudice” argument
The plaintiffs argued that the Estate should bear responsibility for failing to preserve Dr. O’Mahony’s evidence. On this theory, the Estate’s lawyers should have taken steps in the brief window after the irregular service to secure Dr. O’Mahony’s testimony before he became non-verbal. The argument is the Chiarelli point that prejudice cannot be manufactured by the defendant’s own failure to take reasonable steps.
The court rejected the argument. The Estate’s lawyers were retained shortly after the irregular service. Within approximately nine days of their retainer, Dr. O’Mahony was non-verbal. The window for evidence preservation was vanishingly short, and the Estate’s lawyers had no realistic opportunity to secure his evidence. They acted reasonably and promptly given the circumstances.
The court’s response to the self-created prejudice argument was pointed. The plaintiffs’ lawyers had themselves waited an entire month after realizing in July 2022 that the Statement of Claim had not been served before attempting any service at all. Having taken a leisurely approach to their own procedural obligations, the plaintiffs were not in a position to demand that the Estate’s lawyers should have jumped into action within days of being retained.
The analysis on its facts
The court found two grounds for dismissing the extension motion.
First, the explanation for the delay was inadequate. The two tickler reminders in September and October 2021 went unaddressed. There was no evidence about what the lawyer did or did not do in response to them. The “miscommunication” that explained part of the delay did not arise until January 2022 — three months after the deadline had already passed. And after the lawyer realized in July 2022 that the Statement of Claim had not been served, an entire additional month elapsed before any service attempt was made. The court found this final month of delay “absolutely no explanation at all” supported and held that, on this basis alone, the motion should be dismissed.
Second, the prejudice was actual, significant, and uncompensable. Two essential witnesses (the nurse practitioner and the defendant physician) had become unavailable during the delay. Their evidence about invariable practice was irretrievably lost. The Estate’s lawyers had no opportunity to preserve the evidence given the timing. The presumption of prejudice attached because the service occurred outside the limitation period, and the actual prejudice was demonstrated on the evidence.
The motion was dismissed.
The doctrinal lessons
The case stands for several propositions.
Service deadlines are substantive, not technical. The six-month service rule under Rule 14.08(1) exists to ensure that defendants receive timely notice of claims and that evidence is preserved while witnesses are available. A missed deadline can produce substantive consequences when prejudice accrues during the delay.
The Chiarelli framework is plaintiff-onerous. The plaintiff bears the onus of demonstrating no prejudice. Where witnesses have died or become unavailable during the delay, that onus is very difficult to discharge. The framework will protect plaintiffs from technical defaults that produce no prejudice, but will not save plaintiffs whose lawyers’ inaction has produced real harm to the defence.
The presumption of prejudice attaches when both deadlines have run. Where service is late AND outside the limitation period, the burden shifts. The plaintiff must affirmatively rebut the presumption, which is much harder than simply asserting no prejudice.
The invariable practice doctrine makes witnesses essential. Clinical charts do not capture invariable practice. When a clinical witness becomes unavailable, the evidence of their invariable practice is uniquely lost. This is doctrinally important in malpractice cases because invariable practice is often the decisive evidence on standard of care.
Self-created prejudice arguments require timing. A plaintiff who argues that the defendant should have preserved evidence must be able to demonstrate that the defendant had a reasonable opportunity to do so. Where the defendant’s lawyers were retained promptly after notice and the defendant became unavailable shortly afterwards, the argument fails.
Lawyer conduct matters at the margin. Chiarelli directs the court to focus on the rights of the litigants rather than the conduct of counsel. But where lawyer conduct has produced prejudice that cannot be remedied, the framework will not protect the plaintiff from the consequences. The court’s pointed observations about the plaintiffs’ lawyers’ delays were context, not dispositive — but the substance of the dismissal turned on the prejudice the delays had caused.
The procedural cluster
Tookenay is the seventh case in the rewritten procedural cluster on this site:
- Salamaszynski v Michael Garron Hospital (litigation privilege)
- Algarawi v Bartolomeo (QA/QCIPA protection)
- Martin v HPARB (PHIPA limits)
- Beazley v Johnston (summary judgment + White Burgess expert qualification)
- Veran v Lutyk (Rule 33 medical examination)
- Lal v Anderson (jury notice / s. 108 CJA)
- Tookenay v O’Mahony Estate (this case — Rule 14.08 service extension)
The cluster now covers the major procedural frameworks in Ontario medical malpractice practice: discovery and privilege (Salamaszynski, Algarawi), regulatory privacy (Martin), summary judgment and expert qualification (Beazley), defence medical examinations (Veran), jury notices (Lal), and service extensions (Tookenay).
Procedural deadlines and prejudice
A loose sub-grouping emerging from this case and from Bendah v Fleming addresses procedural deadlines and the prejudice analysis:
- Bendah: the discoverability framework under the Limitations Act, 2002, s. 5 — limitation period preserved because discovery required a supportive expert opinion (received in January 2015)
- Tookenay: the Rule 14.08 service framework — extension denied because actual prejudice arose during the delay
The two cases illustrate the framework operating in different directions. In Bendah, the discoverability framework rescued a stale claim because the plaintiff could not reasonably have discovered the claim sooner. In Tookenay, the prejudice framework defeated an extension because the plaintiff’s lawyers’ inaction produced harm during the delay. The frameworks share the underlying principle that procedural deadlines exist for substantive reasons, and that the courts will calibrate the deadlines to fairness on the facts of each case.
Why this case matters
For plaintiff counsel. Tookenay is a procedural cautionary tale. Service deadlines must be diarized and respected. Tickler reminders must be responded to. Misinterpretations of internal records must be checked against actual filings. And when an omission is discovered, immediate corrective action is essential — additional delay compounds the problem rather than mitigating it. The reputational and substantive consequences of Tookenay-style failures can be severe.
For defence counsel. The case is useful precedent on the prejudice analysis under Chiarelli. Where witnesses have died or become incapacitated during the plaintiff’s delay, and where the Estate or defence team has not had a reasonable opportunity to preserve their evidence, the prejudice is actual and uncompensable. The “self-created prejudice” argument can be defeated by demonstrating the timing realities of when the defence was retained and when the witnesses became unavailable.
For prospective clients. A malpractice claim is a multi-year process. The investigation phase before issuance typically takes a year or more. After issuance, the claim must be served promptly. After service, the claim proceeds through pleadings, discoveries, expert reports, and eventually mediation or trial — typically four to seven years from start to finish. Throughout this period, the case depends on the continued availability of witnesses. Procedural deadlines exist to ensure that the case proceeds at a pace that preserves the integrity of the evidence. Choosing a lawyer with the systems and discipline to meet procedural deadlines is part of the foundational decision about how to advance a malpractice claim. See Suing for Medical Malpractice in Ontario: What You Need to Know for the broader framework.
For practising physicians and other defendants. The case is a reminder that timely notice of a malpractice claim allows for the preservation of evidence — through deposition, statement, or other formal mechanism — that may not survive the natural attrition of human life. Defendants who become aware of a potential claim should consider, with counsel, whether early steps to memorialize their version of events are appropriate.
For more on the broader framework of malpractice claims and the procedural pathway, see Suing for Medical Malpractice in Ontario: What You Need to Know.
Decision Date: February 2, 2024
Jurisdiction: Ontario Superior Court of Justice
Citation: Tookenay v O’Mahony Estate, 2024 ONSC 709 (CanLII)
Key authorities: Chiarelli v Wiens, 2000 CanLII 3904 (ONCA) (extension of time for service); Rules of Civil Procedure, RRO 1990, Reg 194, Rule 14.08; ter Neuzen v Korn, [1995] 3 SCR 674 (invariable practice doctrine); Limitations Act, 2002, SO 2002, c 24, Sched B
