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Breach of Confidence:
Improper Use of Business Information Including Trade Secrets
Last Updated: June 11 2026
Question: How can I stop a former employee or competitor from misusing my business’s confidential information in Ontario?
Answer: If your secret recipe, client list, proprietary software, or internal process was shared in confidence and is now being used without permission, Paladin LLP can help you pursue a breach of confidence claim and seek fast remedies like an injunction, evidence preservation, and damages to protect your business across Ontario through Paralegal services. Call (289) 925-1572 for a free 1-hour consultation to review what was shared, how it was communicated, and the proof needed to show misuse and business harm under Lac Minerals Ltd. v. International Corona Resources Ltd., [1989] 2 S.C.R. 574.
Misused Business Secrets
In business, the product recipes, proprietary software, systems and processes, among many other things, may be highly valuable and the misuse of such confidential information may result in considerable harm. The field of tort law includes a cause of action, meaning right to bring a lawsuit, known as breach of confidence which relates to the improper use of information by a person or other business with whom the confidential information was previously shared. Interestingly, where breach of confidence involves information that was previously shared, the wrongfulness arises from improper use of the information rather than theft of the information.
The Law
As per the case of Lac Minerals Ltd. v. International Corona Resources Ltd., [1989] 2 S.C.R. 574, a Supreme Court decision, the elements that must be proven within a breach of confidence case are:
- The information conveyed was confidential;
- The information was communicated in confidence; and
- The information was misused by the party to whom it was communicated.
Specifically, per Lac Minerals Ltd., the Supreme Court said:
I can deal quite briefly with the breach of confidence issue. I have already indicated that Lac breached a duty of confidence owed to Corona. The test for whether there has been a breach of confidence is not seriously disputed by the parties. It consists in establishing three elements: that the information conveyed was confidential, that it was communicated in confidence, and that it was misused by the party to whom it was communicated. In Coco v. A. N. Clark (Engineers) Ltd., [1969] R.P.C. 41 (Ch.), Megarry J. (as he then was) put it as follows at p. 47:
In my judgment, three elements are normally required if, apart from contract, a case of breach of confidence is to succeed. First, the information itself, in the words of Lord Greene, M.R. in the Saltman case on page 215, must "have the necessary quality of confidence about it." Secondly, that information must have been imparted in circumstances importing an obligation of confidence. Thirdly, there must be an unauthorized use of that information to the detriment of the party communicating it . . .
As a particularly interesting example case, Cadbury Schweppes Inc. v. FBI Foods Ltd., [1999] 1 S.C.R. 142 involved the licensing of the recipe for Clamato juice by Duffy-Mott (a company later acquired by Cadbury Schweppes Inc.) to Caesar Canning who then contracted production to FBI Foods Ltd. After Cadbury Schweppes acquired Duffy-Mott, Caesar Canning was notified of termination of the licensing agreement; however, FBI, who later acquired assets of Caesar Canning, made use of the recipe despite a lack of authorization to do so.
Conclusion
Improper use of secretive information may constitute as the tort of breach of confidence where information was confidential, information was communicated within a confidential context, and the information was then misused by the party that received the communication.
NOTE: A significant volume of online searches for “lawyers close to me” or “top lawyer in” typically indicates a desire for prompt and effective legal assistance rather than a particular job title. In Ontario, licensed paralegals fall under the jurisdiction of the same Law Society that governs lawyers, permitting them to act on behalf of clients in specific litigation cases. Core to their function are advocacy, legal insight, and procedural expertise. Paladin LLP provides legal representation within its authorised mandate/scope, focusing on strategic positioning, evidentiary preparation, and persuasive advocacy, all aimed at securing efficient and positive outcomes for clients.
