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Find a Lawyer Ā» Canada Legal Guides Ā» Money, Taxes & IP Canada Ā» Copyright, Trademark & Patents Canada Ā» Trade Secret Theft by a Co-Founder: Canadian Legal Steps

Trade Secret Theft by a Co-Founder: Canadian Legal Steps

1 Jul 2026 5 min read No comments Copyright, Trademark & Patents Canada
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If a co-founder steals your startup’s trade secrets in Canada, you must act immediately to prevent irreparable harm. You can apply to a provincial superior court for an interlocutory injunction to stop them, though initial legal fees for emergency actions typically start around $15,000 CAD.

Building a startup is a thrilling journey, but discovering that a trusted co-founder has stolen proprietary code, client lists, or sensitive business strategies is devastating. In Canada’s competitive tech hubs like Toronto, Vancouver, and Waterloo, intellectual property (IP) is often the most valuable asset a company owns. When a business partner goes rogue, the damage to your competitive advantage can be swift and permanent.

Unlike patents or registered trademarks, trade secrets are not formally registered with the government. 🔒 Their legal protection comes from common law (or the Civil Code in Quebec) and relies entirely on your ability to prove the information was confidential and that reasonable steps were taken to protect it. If a co-founder breaches their fiduciary duty to the company, you generally have strong grounds to pursue civil remedies.

Time is of the essence when dealing with intellectual property theft. You cannot wait for the stolen code to be launched in a rival product. Canadian law provides powerful emergency tools, such as injunctions, to freeze the rogue founder’s activities. Whether your business is incorporated federally or provincially, your law firm will typically file these emergency motions in your local provincial court, such as the Superior Court of Justice in Ontario or the Supreme Court of British Columbia.

Step-by-Step Process in Canada to Stop Trade Secret Theft

Navigating IP theft requires strategic and rapid action. If you operate a startup anywhere in Canada and suspect a co-founder of stealing trade secrets, the process generally involves these critical steps.

Step 1: Secure Digital Evidence Immediately

Before confronting the co-founder, secure the evidence of the theft. Work with your IT team to preserve email server logs, cloud storage access records, and Git repository histories. Do not illegally hack their personal devices, but you can absolutely review activity on company-owned laptops and networks. Document exactly what was downloaded and when. 📊 Preserving the chain of custody for digital evidence is vital for your future court case.

Step 2: Hire a Canadian IP Litigation Lawyer

Trade secret theft is complex, and you need a specialized law firm, not a general corporate lawyer. Retain an IP litigation lawyer who is licensed in your province. They will review your founders’ agreement, shareholder agreements, and confidentiality clauses to determine the strongest legal basis for your claim.

Step 3: Issue a Formal Cease and Desist (C&D)

Your lawyer will usually draft a heavily worded Cease and Desist letter. 📩 This puts the co-founder on formal notice that they are in breach of their duties and demands the immediate return and destruction of all stolen confidential information. Sometimes, the threat of ruinous litigation is enough to force them to the negotiation table.

Step 4: Apply for an Interlocutory Injunction

If the co-founder ignores the C&D, your law firm can file for an emergency interlocutory injunction at your local provincial courthouse. This is a temporary court order commanding the individual to stop using, selling, or disclosing the trade secrets until a full trial can be held. You must convince the judge that your startup will suffer “irreparable harm” if the order is not granted.

Step 5: Seek an Anton Piller Order (If Necessary)

In extreme cases where you fear the co-founder will delete or destroy evidence, you may apply for an Anton Piller order. 🔍 This acts as a civil search warrant. It allows your legal team, usually accompanied by an independent supervising lawyer, to enter the rogue founder’s premises without warning to search for and seize stolen digital files and hardware.

Step 6: Pursue Civil Damages

Finally, you will proceed with a full civil lawsuit for breach of confidence and breach of fiduciary duty. You may be entitled to financial compensation for any lost profits, or you can seek an “accounting of profits,” which forces the thief to hand over any money they made by illegally using your startup’s IP.

How Much Does it Cost in Canada?

Litigating trade secret theft is notoriously expensive. Because emergency court orders require massive upfront preparation by your legal team, the initial costs can be steep.

Expense TypeEstimated Cost (CAD)
IP Law Firm Initial Retainer$5,000 to $20,000+
Cease & Desist Letter$1,000 to $2,500
Emergency Injunction Application$15,000 to $50,000+ (including preparation)
Court Filing Fees (e.g., Ontario)Approx. $200 to $350 per motion
Digital Forensics Expert$3,000 to $10,000+

How Long Does the Process Take?

Securing an emergency injunction is designed to be fast. If the evidence of theft is overwhelming, your lawyer can often secure a temporary injunction within 48 hours to 2 weeks. An Anton Piller order can also be obtained in a matter of days in urgent scenarios.

However, the actual civil lawsuit to recover damages and make the injunction permanent is a lengthy process. 📅 Navigating discoveries, mediations, and trial scheduling in busy jurisdictions like the Court of King’s Bench in Alberta or the Superior Court in Ontario typically takes 2 to 4 years to fully resolve.

Frequently Asked Questions (FAQ)

Is trade secret theft a criminal offence in Canada?

Yes. Under Section 391 of the Canadian Criminal Code (introduced in July 2020 following the CUSMA trade agreement), it is a serious criminal offence to knowingly obtain, communicate, or make available a trade secret by deceit, falsehood, or other fraudulent means. This offence carries a maximum penalty of up to 14 years in prison. However, because law enforcement can be slow to investigate corporate disputes, founders still rely heavily on swift civil remedies like injunctions.

What if we didn’t sign a Non-Disclosure Agreement (NDA)?

Even without a formal NDA, a co-founder or company director owes a “fiduciary duty” and a common law duty of confidence to the business. You can still successfully sue them for stealing trade secrets, though having a signed written agreement makes your legal case much stronger.

Can I stop them from raising capital with my code?

Yes. If you secure an interlocutory injunction, the court order legally bars the rogue founder from demonstrating or using the stolen code. If they show it to investors, they are in contempt of court and could face severe financial penalties or even jail time.

How do courts define a trade secret?

In Canada, information is generally considered a trade secret if it has commercial value because it is kept secret, and you have made reasonable efforts to maintain its secrecy (like using passwords, restricted access, and NDAs). This includes source code, algorithms, client lists, and manufacturing processes.

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