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Civil LitigationMay 16, 2026

What is a Statement of Defence in Ontario litigation?

If you have been served with a Statement of Claim in Ontario Superior Court, you need to respond with a Statement of Defence.

What is a Statement of Defence in Ontario litigation?

If someone sues you in Ontario, you usually do not get to simply ignore it and hope it goes away. A lawsuit is a formal court process, and once you are served with a Statement of Claim, the clock usually starts running. One of the most important documents you may need to prepare is called a Statement of Defence.

A Statement of Defence is your written response to the lawsuit. It tells the court, and the person suing you, which parts of the claim you agree with, which parts you deny, and what your side of the story is. In simple terms, the Statement of Claim says, “Here is why I am suing you,” and the Statement of Defence says, “Here is why I disagree, or here is what really happened.”

For example, imagine someone sues you and says you owe them money under a contract. Your Statement of Defence might say that you already paid them, that they did not do what they promised, that the amount they are asking for is wrong, or that there was never a valid agreement in the first place. The defence does not have to be dramatic or emotional. It should clearly explain the facts and legal reasons why you say the plaintiff should not win all or part of the claim.

In Ontario, a Statement of Defence is especially important because failing to respond can have serious consequences. If you do not defend the claim on time, the plaintiff may be able to have you noted in default. That can make it much harder for you to participate in the case, and in some situations, the plaintiff may be able to obtain judgment against you without a full hearing where your side is properly considered.

A good Statement of Defence should deal with the allegations in the Statement of Claim carefully. It is usually not enough to say, “I deny everything.” The court process expects you to respond to the main allegations and explain your position. If a fact is true, you may admit it. If it is false, you may deny it. If you do not know whether it is true, you may say that you have no knowledge of it. The goal is to make the issues clear so everyone understands what the case is really about.

The Statement of Defence may also raise legal arguments. For example, you might say the claim was started too late, that the plaintiff is suing the wrong person, that the contract does not mean what they say it means, or that the plaintiff also did something wrong. In some cases, a defendant may also have a claim back against the plaintiff. That is usually called a counterclaim.

It is important to understand that a Statement of Defence is not the same thing as evidence. You do not usually attach every email, receipt, screenshot, or document to the defence itself. Instead, the defence sets out your position in writing. Evidence normally becomes important later in the case, such as during document disclosure, examinations, motions, or trial.

For many people, the hardest part is knowing what to include and what to leave out. A Statement of Defence should be clear, organized, and focused. It should not be filled with insults, long personal attacks, or unrelated complaints. Even if the lawsuit feels unfair or stressful, the document should be written in a way that helps the court understand the real dispute.

If you have been served with a Statement of Claim in the Ontario Superior Court of Justice, you should act quickly. There are deadlines for responding, and missing those deadlines can create avoidable problems. Even if you plan to settle the matter, it may still be necessary to protect your position in the court process.

Flatly.ca offers help with preparing a Statement of Defence for Ontario Superior Court. This can be useful if you need a clear, properly structured defence that responds to the lawsuit and helps you take the next step in the litigation process.

A Statement of Defence is your opportunity to tell your side of the story in the lawsuit. It does not mean the case is over, and it does not guarantee a result, but it is one of the most important first steps in defending yourself. Taking it seriously can make a major difference in how the case moves forward.

Legal Disclaimer

This article is for general information purposes only and does not constitute legal advice. It does not create a lawyer-client relationship. Laws and procedures may change. For advice specific to your situation, consult a licensed Ontario lawyer.

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