Vexatious Litigant Orders in Ontario: When Courts Restrict Someone's Right to Sue

Access to the courts is a fundamental part of Ontario's justice system — anyone, in principle, can bring a claim. But that right is not unlimited. When a person repeatedly launches lawsuits or motions that are meritless, harassing, or an abuse of the court's process, Ontario courts have a tool of last resort: declaring the person a vexatious litigant and restricting their ability to start new proceedings without permission.

This article explains what that designation means, what it takes to get there, and what life looks like for someone under such an order.

What "Vexatious Litigant" Actually Means

A vexatious litigant order does not mean someone lost a case, or even lost several cases. Losing — even repeatedly — is not, on its own, grounds for this kind of order. Litigation is often genuinely difficult, and a losing record can simply reflect a weak case pursued in good faith.

What courts are targeting is a pattern of abusive conduct in how someone uses the litigation process itself — for example, relentlessly relitigating issues that have already been finally decided, bringing claims with no reasonable prospect of success against the same person or institution over and over, or using the court system to harass rather than to genuinely resolve a dispute.

Signs Courts Look For

There is no single formula, but Ontario courts considering whether someone should be declared vexatious tend to look at the pattern as a whole, including things like:

• Repeatedly starting proceedings that are bound to fail or that restate claims already dismissed
• Persistently relitigating matters that have already been finally decided by a court
• Pursuing multiple proceedings against the same party (or parties) with no reasonable basis
• Using the court process to harass, oppress, or burden another party rather than to resolve a genuine legal dispute
• Ignoring costs orders from earlier proceedings while continuing to file new claims
• A demonstrated pattern across a substantial history of litigation, rather than one or two difficult cases

No single factor is automatically decisive — courts look at the overall pattern and history before taking this significant step.

Who Can Bring This Kind of Motion

A vexatious litigant order is typically sought by a party (often one who has been repeatedly sued or targeted by the person in question) through a motion to the court, though the court itself can also raise the issue in the course of a proceeding. It is not something imposed lightly or quickly — the person facing the potential order generally has the opportunity to respond and argue against it before any restriction is imposed.

What Restrictions Follow an Order

Once someone is declared a vexatious litigant, the most significant consequence is usually a requirement to obtain the court's leave (permission) before starting any new legal proceeding, or sometimes before continuing an existing one. In practice, this means:

• The person cannot simply file a new claim or motion on their own initiative.
• They must first ask a judge for permission, typically explaining why the proposed proceeding has genuine merit and is not simply a continuation of the abusive pattern.
• A judge reviewing the leave request can refuse it if the proposed claim looks like more of the same conduct that led to the order in the first place.
• The restriction can be broad (covering any new proceeding) or narrower (limited to proceedings against a specific party or on a specific subject), depending on how the order is framed.

Being declared vexatious does not erase existing legal rights — it adds a gatekeeping step designed to filter out further abuse of the court process, while still, in principle, leaving room for a genuinely meritorious claim to proceed with permission.

Can the Order Ever Be Lifted?

A vexatious litigant order is not necessarily permanent. A person subject to one can, in principle, apply to have the restriction varied or lifted, generally by demonstrating that the pattern of conduct that led to the order is unlikely to continue. This is not a quick or easy process, and courts will look carefully at any such request given the history that led to the restriction in the first place.

Frequently asked questions