Medical Malpractice Lawyer in Toronto & the GTA

A medical malpractice claim in Ontario asks whether a health-care provider failed to meet the standard of care and caused you harm. To succeed, you generally have to prove four things: a duty of care, a breach of the standard of care, that the breach caused your injury, and measurable damages. These cases are expert-driven and have strict time limits.

Trusting a health-care provider and being harmed by their negligence is deeply distressing. Not every bad medical outcome is malpractice, because medicine carries genuine risk even when care is competent. A claim arises when the care fell below the accepted standard and that failure caused harm. These are among the most complex personal injury cases, so understanding the basics early helps.

What you have to prove

In short: a successful claim generally requires four elements — the provider owed you a duty of care, they breached the standard of care a competent peer would have met, that breach caused your injury, and you suffered measurable damages.

The hardest of these is usually the standard of care and causation, because they require showing what a reasonably competent provider would have done and that the failure, rather than the underlying illness, caused the harm. This is why independent expert medical evidence is essential.

Why expert evidence is central

Ontario medical malpractice claims are expert-driven. A case generally cannot proceed without independent medical specialists who review the records and provide opinions on whether the standard of care was breached and whether that breach caused the injury. Building this evidence takes time and is a major reason these cases are resource-intensive.

Strict time limits

Ontario's Limitations Act, 2002 sets a general two-year limitation period, but in malpractice cases the clock runs from when you discovered, or reasonably should have discovered, that negligence may have caused your injury. This matters because patients often do not realize harm was caused by negligence until later. There is also an ultimate limitation of fifteen years from the act or omission. Exceptions apply for minors and people under a disability.

How AK Lawyers handles medical malpractice claims

AK Lawyers (Antonov Kaganovich LLP) is a Toronto personal injury firm that represents injured patients, never hospitals or insurers. With these claims, our focus is on:

• Obtaining and reviewing the medical records to understand what happened and when.
• Retaining independent medical experts to assess the standard of care and causation.
• Protecting your limitation period, which can be complex in malpractice cases and is a common reason valid claims are lost.
• Preparing the case carefully for the steps ahead, including discoveries and mandatory mediation. Most claims resolve before trial.
• Contingency fees — you don't pay legal fees unless your claim succeeds. The fee is a percentage set out in a written contingency-fee agreement at the start, which also covers disbursements.

What to do if you suspect medical negligence

If you think negligent care harmed you or a family member, a few early steps help:

• Request your complete medical records. You are generally entitled to copies, and they are the foundation of any claim.
• Write down the timeline, including appointments, who you saw, what was said, and how your condition changed.
• Keep following medical advice and continue treatment, both for your health and to document your course of recovery.
• Note the dates, particularly when you first suspected the care may have caused harm, since this can affect limitation deadlines.
• Get legal advice early, because building the expert evidence these cases require takes time.

Common types of medical malpractice claims

Negligence can arise in many settings. Examples include a missed or delayed diagnosis, surgical errors, medication or anaesthesia mistakes, birth-related injuries, and a failure to obtain informed consent before a procedure. What matters is not simply that something went wrong, but whether the care fell below the standard a reasonably competent provider would have met and whether that failure caused the harm.

What compensation may cover

Where a claim succeeds, compensation generally reflects both financial and non-financial losses. Pecuniary losses can include past and future income loss, the cost of future care and treatment, and out-of-pocket expenses, which in serious cases can be substantial and require expert evidence to project. Non-pecuniary damages compensate for pain, suffering, and loss of enjoyment of life. The appropriate amount depends entirely on the severity and permanence of the injury and its effect on the person's life.

Serving Toronto & the Greater Toronto Area

Based in Toronto, AK Lawyers represents patients harmed by negligent care across Toronto and the GTA, including Mississauga, Brampton, Vaughan, North York, Scarborough, Barrie, Richmond Hill, Aurora, and King City. Medical malpractice lawsuits are generally brought in the Ontario Superior Court of Justice.

Frequently asked questions