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Find a Lawyer » Canada Legal Guides » New Brunswick Legal Guides » Business & Commercial Law New Brunswick » Business Litigation Guides New Brunswick » Requirements for Proving Tortious Interference with Business in New Brunswick

Requirements for Proving Tortious Interference with Business in New Brunswick

23 May 2026 3 min read No comments Business Litigation Guides New Brunswick
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To successfully sue for tortious interference in New Brunswick, you must prove that a third party intentionally and unlawfully caused someone to break an existing contract with your business, resulting in actual financial damages. You must file your Statement of Claim at the Court of King’s Bench.

Building strong contracts with suppliers and clients is the backbone of any successful enterprise. 💼 But what happens when a malicious competitor steps in and intentionally blows up your business deals? In Canadian common law, this aggressive and unfair tactic is known as “tortious interference with economic relations” or “inducing breach of contract.”

If you run a manufacturing plant in Dieppe, a retail chain in Saint John, or a service firm in Fredericton, you have the right to protect your commercial agreements. 📍 However, the line between aggressive, legal competition and unlawful interference is very thin. This guide explains exactly what evidence is required to build a winning case in New Brunswick.

Step-by-Step Requirements to Prove Interference in New Brunswick

To win a lawsuit for tortious interference at the Court of King’s Bench, your commercial litigation lawyer cannot just argue that the competitor was “mean” or “cutthroat.” You must satisfy a very specific, multi-part legal test established by the Supreme Court of Canada.

Step 1: Prove a Valid Contract or Business Relationship Existed

First, you must prove there was actually something to interfere with. 📄 You must provide a valid, legally binding contract between your business and a third party (like a client or supplier). If the relationship was merely a casual expectation of future business with no formal agreement, it is much harder to prove interference.

Step 2: Prove the Defendant Knew About the Contract

A competitor cannot intentionally interfere with a contract they did not know existed. 🤔 Your law firm will use the discovery process to find emails, memos, or witness testimony showing the defendant had clear knowledge of your specific business agreement before they acted.

Step 3: Demonstrate Intentional and Unlawful Action

This is the hardest hurdle. It is perfectly legal for a competitor to offer your client a lower price, even if it makes the client want to break your contract. 🚨 To be tortious, the defendant must use unlawful means. This means they used fraud, defamation, blackmail, physical threats, or bribery to force the third party to break their contract with you.

Step 4: Calculate Your Financial Damages

Finally, you must show that the interference caused actual, measurable financial harm to your business in CAD. 💵 You will likely need to hire a forensic accountant to calculate lost profits, wasted materials, and the long-term impact on your business’s valuation. This data is compiled and submitted to the Court of King’s Bench.

How Much Does Commercial Litigation Cost in New Brunswick?

Business lawsuits are high-stakes and require deep financial resources. 💰 Here is a breakdown of potential costs if you take a tortious interference case to trial:

Litigation ExpenseEstimated Cost (CAD)
Court Filing Fee (Statement of Claim)$100
Commercial Litigation Lawyer$300 – $600 per hour
Forensic Accountant / Expert Witness$5,000 – $15,000+
Total Trial Estimate (If not settled)$50,000 – $150,000+

How Long Does the Process Take?

Corporate litigation is a marathon, not a sprint. 🕑 From the moment you file your Statement of Claim, the process of exchanging documents (discovery), conducting examinations, and waiting for a trial date at the New Brunswick Court of King’s Bench generally takes 1.5 to 3 years. However, most commercial disputes are settled out of court through mediation long before a trial happens.

Frequently Asked Questions (FAQ)

Is offering a better price considered tortious interference?

No. Offering a better price or superior service is considered normal market competition. It only becomes tortious interference if the competitor uses unlawful means-like lying about your company’s financial stability or bribing the client-to break the contract.

What is the statute of limitations in New Brunswick?

Under the New Brunswick Limitation of Actions Act, you generally have exactly 2 years from the date you discovered (or ought to have discovered) the interference and resulting financial loss to file your lawsuit.

Can I sue the client who broke the contract too?

Yes. You can typically sue the client for standard “breach of contract,” and simultaneously sue the competitor for “tortious interference.” Your lawyer will advise on the best strategy to recover your financial losses.

Can I be awarded punitive damages?

It is possible, though rare. If the competitor’s conduct was exceptionally malicious, high-handed, or outrageous, a New Brunswick judge may award punitive damages on top of your actual lost profits to punish the defendant’s bad behaviour.

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