Suing an Offshore Manufacturer for Canadian Patent Infringement

Inventing a unique product and securing a patent through the Canadian Intellectual Property Office (CIPO) is a massive achievement for any business. However, many Canadian inventors eventually face a frustrating reality: an offshore factory begins manufacturing cheap knock-offs. Because intellectual property rights are territorial, navigating the legal system to enforce your rights requires a strategic approach focused on Canadian borders rather than foreign courts.

The global economy makes it incredibly easy for overseas factories to copy designs and ship them worldwide. Whether you operate a tech startup in Waterloo or a manufacturing hub in Calgary, understanding how to block these goods from entering the Canadian market is your primary defence. By targeting the domestic supply chain, you can effectively cut off the offshore manufacturer’s profits in Canada without ever having to file a lawsuit overseas.

Step-by-Step Process for Enforcing Your Patent in Canada

Stopping offshore infringement involves a combination of legal action against local distributors and cooperation with federal border authorities. Here is how most law firms handle the process in Canada.

Step 1: Confirming Your CIPO Patent Claims

📝 Before taking any action, you must verify that your Canadian patent is active and that the imported product actually infringes on your specific patent claims. A patent lawyer will conduct a process called “purposive construction” to map the features of the knock-off product directly to the claims approved by CIPO. If the foreign product omits an essential element of your patent, it might not technically be an infringement under Canadian law.

Step 2: Identifying the Canadian Importers

Since you cannot easily sue the overseas factory, you must identify the businesses bringing the goods into Canada. This involves investigating local retailers, e-commerce sellers on platforms like Amazon Canada, or wholesale distributors operating in major ports like Halifax or Montreal. Purchasing a sample of the product and keeping the receipt is a critical step in proving that a commercial sale occurred within Canada.

Step 3: Sending a Cease and Desist Letter

Once the local importers are identified, your law firm will typically draft a formal cease and desist letter. This document notifies the Canadian distributor of your active CIPO patent and demands they immediately stop selling the infringing product. Many local retailers will voluntarily pull the product from their shelves to avoid costly litigation, which effectively kills the offshore factory’s Canadian market.

Step 4: Filing a Statement of Claim in Federal Court

If the local distributors refuse to stop, the next step is filing a Statement of Claim. ⚔️ While the Federal Court of Canada has concurrent jurisdiction with provincial superior courts to hear patent infringement actions under Section 54 of the Patent Act, it is the most common venue because it offers nationwide remedies. Note that only the Federal Court has exclusive jurisdiction over patent impeachment or invalidity actions. By suing the Canadian importers for patent infringement, you can seek financial compensation (damages) and a court order (injunction) legally forbidding them from importing the offshore goods ever again.

Step 5: Banning the Importation of Infringing Goods

To block future shipments of infringing goods from entering the Canadian market, you must secure a permanent injunction from the Federal Court directly against the Canadian importer or distributor. It is important to note that Canada’s Patent Act does not contain customs or border-enforcement provisions. Unlike the Copyright Act and Trademarks Act, there is no mechanism-either through the CBSA’s Request for Assistance (RFA) program or via court orders-to involve the Canada Border Services Agency (CBSA) in detaining or intercepting patent-infringing shipments at the border. Consequently, your primary legal remedy is to obtain a court order legally prohibiting the domestic importer from importing, marketing, or selling the offshore products within Canada.

How Much Does Patent Litigation Cost in Canada?

Enforcing a patent through the legal system is a significant financial investment. As of June 2026, typical costs in Canadian dollars (CAD) include:

• Cease and Desist Drafting: Generally ranges from $1,500 to $3,500 CAD depending on the technical complexity of the infringement analysis.
• Federal Court Filing Fee: The fee to issue a standard Statement of Claim in the Federal Court is currently $150 CAD.
• Law Firm Litigation Fees: Taking a patent infringement case to a full trial in the Federal Court easily costs between $100,000 and $500,000+ CAD in legal fees and expert witness costs.
• Interlocutory Injunction Legal Fees: Drafting and litigating an urgent motion for an interlocutory injunction in the Federal Court (to stop a Canadian distributor from selling or importing goods before a full trial) typically costs $20,000 to $50,000+ CAD in legal fees.

How Long Does the Enforcement Process Take?

The timeline heavily depends on how the Canadian distributors react. ⏱ If a cease and desist letter is successful, the infringement can be stopped in 2 to 4 weeks. However, if the importer decides to fight the allegation in the Federal Court of Canada, a full patent trial typically takes 2 to 4 years to reach a final judgment.

Frequently Asked Questions (FAQ)

Author: lawyerinfo.ca