When a Family Court Litigant Is Declared Vexatious in Ontario

Most family court disagreements resolve through negotiation, a handful of motions, or a trial. But a small number of cases involve one party who keeps filing motion after motion, often without merit, long after the underlying issues should have been settled. Ontario's courts have a tool for exactly this situation: declaring a litigant vexatious and restricting their ability to keep filing without permission.

This guide explains what the designation means, how a court gets there, and what changes once it's in place.

What "Vexatious Litigant" Means

• A formal court finding that a person has misused the court process — typically through repeated, meritless, or harassing litigation
• Once made, it restricts that person's ability to start or continue court proceedings without first getting the court's permission (often called "leave")
• A significant, court-supervised restriction on a person's normal right to access the courts — not made lightly, and not common
• The general legal framework for this kind of order in Ontario comes from the province's Courts of Justice Act, which applies across many types of litigation, not just family cases

Signs a Court May Consider

No single factor guarantees a vexatious litigant finding, but courts commonly look at a pattern that includes:

• Repeatedly relitigating issues that have already been decided
• Bringing motions with no reasonable chance of success, over and over
• Using the court process primarily to harass or wear down the other party, rather than to resolve a genuine dispute
• Ignoring costs orders or other consequences from previous unsuccessful applications
• A documented history over time — not just one difficult motion

The Process to Get There

1. A pattern develops. Typically, the concerning party has already brought multiple unsuccessful or repetitive motions or proceedings.
2. The other party, or the court itself, raises the issue. A motion asking the court to declare the person vexatious and restrict further filings is brought, usually supported by a detailed history of the prior litigation.
3. The court reviews the full history. The judge considers the pattern of past filings, their outcomes, and their impact on the other party and the court system.
4. A decision is made. If the court agrees, it can order that the person may not start or continue proceedings without first obtaining the court's permission.
5. The restriction takes effect going forward. Future attempts to file without leave can be refused or struck out.

What Happens After the Designation

• The restricted party generally must ask the court's permission before filing anything new related to the case
• A request for leave to file typically requires showing the proposed step has genuine merit, not just that the person wants to raise it
• The designation doesn't undo existing, validly obtained orders — it controls what can be filed going forward
• It can be a real practical barrier for someone who genuinely does have a new, legitimate issue to raise, which is part of why courts treat the designation seriously and don't impose it casually

Alternatives Before It Gets There

Because a vexatious litigant finding is a significant step, courts and opposing parties often try other tools first, including:

• Cost awards against the party bringing meritless motions
• Case management by a single judge who becomes familiar with the file and can screen out repetitive requests more efficiently
• Directions limiting the scope or frequency of future motions, without going as far as a full vexatious litigant order

Frequently asked questions