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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Business & Commercial Law Ontario » Business Litigation Guides Ontario » How to Seal Confidential Financial Records During a Public Commercial Trial in Ontario

How to Seal Confidential Financial Records During a Public Commercial Trial in Ontario

25 Jun 2026 4 min read No comments Business Litigation Guides Ontario
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Ontario courts follow an “open court” principle, meaning anyone can read your litigation documents. To protect proprietary pricing, trade secrets, or client lists, your lawyer must file a formal motion for a Sealing Order or Confidentiality Order at the Superior Court of Justice, proving that disclosure poses a serious risk to your business.

When a business dispute heads to court in Ontario, from the commercial hubs of Toronto to manufacturing centres like Hamilton, many corporate executives are shocked to learn that their filed documents become public records. 📝 The Canadian legal system relies heavily on transparency, meaning competitors, journalists, and the general public can theoretically walk into a courthouse and request to see your Statement of Claim, financial affidavits, or attached contracts. For businesses protecting sensitive intellectual property or tight profit margins, this exposure can be devastating.

Fortunately, you do not have to hand over your trade secrets to the public just because you are involved in a lawsuit. A commercial litigation lawyer can help you secure protective measures. However, judges do not grant these orders lightly; you must prove that the harm to your business outweighs the fundamental democratic right to an open justice system.

Step-by-Step Process for Securing a Sealing Order in Ontario

Getting a judge to seal a file or redact specific paragraphs requires highly persuasive legal arguments. 💼 You must satisfy the strict legal test set out by the Supreme Court of Canada, known as the Sherman Estate test.

Step 1: Identifying Sensitive Business Documents

Before heading to court, your legal team must meticulously audit the documents you need to file as evidence. You must isolate exactly what constitutes a “trade secret” or confidential financial data. Blanket requests to seal an entire lawsuit are almost always rejected. Judges prefer surgical redactions—blacking out only specific client names, pricing formulas, or proprietary source code.

Step 2: Negotiating a Protective Order with Opposing Counsel

The easiest way to protect documents during the discovery phase (before they are filed with the court) is to draft a mutual Confidentiality Agreement or Protective Order. 🤝 Most opposing law firms in Ontario will agree to this, stipulating that sensitive documents will only be viewed by the lawyers and experts involved, and will be destroyed after the trial concludes.

Step 3: Drafting the Motion for a Sealing Order

If you must file the sensitive document into the public court record, your lawyer will draft a formal Notice of Motion seeking a Sealing Order. This motion will argue that keeping the information public poses a serious risk to an important commercial interest, that the order is necessary to prevent this risk, and that the benefits of the order outweigh its negative effects on the open court principle.

Step 4: Swearing Affidavits to Prove “Serious Risk”

You cannot simply claim you will be embarrassed or lose a slight competitive edge. A senior executive from your company must swear an affidavit detailing exactly how the public release of the information will cause severe, irreparable financial harm. 📋 Concrete evidence, such as proof of non-disclosure agreements (NDAs) previously signed with clients, will strengthen your position.

Step 5: Arguing the Motion Before a Superior Court Judge

Your lawyer will attend the Superior Court of Justice to argue the motion. In highly publicised commercial disputes, third parties—such as media outlets—may occasionally intervene to oppose the sealing order, arguing that the public has a right to know how the dispute is being handled. Your lawyer must vigorously defend your commercial privacy.

How Much Does a Sealing Motion Cost in Ontario?

Bringing an interim motion during an ongoing lawsuit adds to your overall legal bill. 💰 However, failing to protect your client list could cost your business significantly more in lost revenue.

Court Fee / Legal StepEstimated Cost (CAD)
Filing a Notice of Motion (Court Fee)$339
Lawyer Drafting & Affidavit Prep$2,500 – $5,000+
Court Appearance (Lawyer Hourly)$350 – $750 / hour

The exact court filing fees can fluctuate slightly, but the primary expense is the highly technical legal drafting required to satisfy the strict judicial tests for sealing records.

How Long Does the Process Take?

Depending on the backlog at your local courthouse in Ontario, scheduling and arguing a motion for a Sealing Order can take anywhere from 1 to 3 months. 🕎 Most applicants in this province will request a temporary sealing order to protect the documents while they wait for the full motion to be heard.

Frequently Asked Questions (FAQ)

Do we need a sealing order for private mediation?

No. Alternative dispute resolution methods like mediation and arbitration are inherently private processes. Documents shared during these sessions do not enter the public record, which is why many businesses prefer mediation over a public trial.

Can the judge seal the entire lawsuit from the public?

It is incredibly rare for an Ontario judge to seal an entire proceeding. Courts overwhelmingly prefer tailored redactions, allowing the public to see the general nature of the dispute while blacking out specific sensitive data.

What happens to sealed documents after the trial?

Sealed documents typically remain sealed in the court archives indefinitely, accessible only by a specific court order. The judge’s final decision will usually refer to the confidential information in vague terms to preserve its secrecy.

Can media outlets challenge my sealing order?

Yes. Media consortiums frequently challenge sealing orders in high-profile corporate litigation, arguing that freedom of the press and open courts supersede corporate privacy. Your lawyer must be prepared for this resistance.

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