Last Updated: August 23 2026
What should I prove to sue for breach of confidence over misused business secrets in Ontario?
Vescio Legal Services can help if confidential business recipes, proprietary software, systems, or processes were shared under a duty of confidence and then misused, by preparing your claim around the key elements from Lac Minerals Ltd. v. International Corona Resources Ltd., Lac Minerals Ltd. v. International Corona Resources Ltd., [1989] 2 S.C.R. 574: the information had to be confidential, communicated in circumstances importing confidence, and used without authorization to the detriment of the party who disclosed it. In practice, a paralegal will help you collect disclosure and confidentiality evidence, pinpoint the unauthorized use, and assess remedies and next steps across Ontario, including in Toronto and surrounding communities. For a fast case review, call (416) 400-8255.
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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. Generally, breach of confidence involves the wrongful use of information that was openly shared with the party that subsequently misuses the secretive information; and in this respect, breach of confidence differs from theft of trade secrets which would involve an element of misappropriation.
Note: Please contact Vescio Legal Services by phone at: (416) 400-8255 to discuss any specific questions that you may have.
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 quantity of online searches such as “lawyers near me” or “best lawyer in” frequently indicates a desire for prompt and proficient legal support rather than a particular title. In Ontario, licensed paralegals operate under the same Law Society that governs lawyers and possess the authority to represent clients in specific litigation cases. Skills in advocacy, legal analysis, and procedural knowledge are fundamental to this position. Vescio Legal Services provides legal representation within its licensed parameters, focusing on strategic positioning, evidence preparation, and compelling advocacy to secure efficient and advantageous outcomes for clients.