- A patent gives you an exclusive right to make, use, and sell your invention for a fixed period, granted by the federal government after a formal application and examination process.
- A trade secret is confidential information — a formula, process, algorithm, or method — that has value precisely because competitors don't know it.
You've built something — a process, a formula, a piece of technology — that gives your business an edge. Now comes a decision that's easy to get wrong: do you patent it, or keep it as a trade secret? These two strategies are almost opposites. One is built entirely on public disclosure; the other depends entirely on secrecy. Choosing the wrong one for your specific situation can mean losing protection you thought you had.
There's no universally "better" option — it depends on what you've built, how easily it could be copied or reverse-engineered, and how your business plans to use it. This article walks through how each protection works and the trade-offs to weigh.
How Patent Protection Works
A patent gives you an exclusive right to make, use, and sell your invention for a fixed period, granted by the federal government after a formal application and examination process. In exchange for that exclusivity, you must publicly disclose exactly how your invention works, in enough detail that someone skilled in the field could reproduce it.
That trade-off matters:
- You get an enforceable, government-backed right. If someone infringes your patent, you can sue — you don't need to prove they copied you or had access to your secret, because the right exists regardless of how the copying happened.
- But the invention becomes public. Once a patent application is published, and certainly once granted, competitors anywhere can read exactly how it works, even if they can't legally use it themselves.
- Protection is time-limited. A patent lasts for a fixed statutory term and then expires, after which the invention enters the public domain and anyone can use it freely.
- It costs money and time. Patents generally require a registered patent agent, a detailed application, and an examination process — this is a genuine investment, not a quick filing.
How Trade Secret Protection Works
A trade secret is confidential information — a formula, process, algorithm, or method — that has value precisely because competitors don't know it. There's no application, no government office, and no registry involved.
- Protection can last indefinitely — as long as the information stays genuinely secret, there's no expiry date the way there is with a patent.
- It's cheap to "obtain." There's no filing fee, because there's no filing. The cost instead goes into confidentiality agreements, access controls, and internal security.
- It disappears the moment secrecy is lost — through a leak, a departing employee, a supply-chain disclosure, or independent discovery by a competitor.
- It generally doesn't stop independent invention. If a competitor arrives at the same process on their own, or lawfully reverse-engineers a product, trade-secret law typically doesn't give you a claim against them the way patent infringement would.
Comparing Patents and Trade Secrets
| Factor | Patent | Trade Secret |
|---|---|---|
| Disclosure required? | Yes — full public disclosure | No — must stay confidential |
| Duration | Fixed statutory term, then expires | Indefinite, as long as secrecy holds |
| Upfront cost | Application and agent fees | Low filing cost; ongoing security cost |
| Protects against independent invention or reverse engineering? | Generally yes | Generally no |
| Enforcement | Sue for patent infringement | Sue for breach of confidence or contract |
| Best suited for | Inventions that are easy to reverse-engineer once sold | Processes or formulas that are hard to detect or reverse-engineer |
Questions to Ask Before Choosing
- Could a competitor figure this out just by examining your product? If yes, secrecy may not hold, and a patent may be the only real protection available.
- Do you actually need to stop independent invention, or just outright copying? Trade secrets don't stop someone who legitimately develops the same thing separately.
- How long do you realistically need protection? A patent expires; a trade secret theoretically doesn't, but only if secrecy is genuinely maintained for that whole time.
- Can your business actually keep it secret? Consider how many employees, suppliers, or investors will need to know the details, and whether your confidentiality agreements are strong enough to hold up.
- What's your budget and timeline? A patent application is a real investment of both; trade secret protection front-loads cost differently, into internal controls instead.
Can You Use Both?
Not for the same invention — you can't patent something and also keep it secret, since a patent requires public disclosure. But a business built around one core innovation often uses both strategies for different pieces: a patented core technology alongside trade-secret manufacturing know-how or a proprietary process that isn't disclosed in the patent application itself.
Frequently asked questions
Is it too late to patent something I've already been selling?
It can be, depending on how long the product has been publicly available — public disclosure or sale can affect your ability to patent later. If you're considering a patent, talk to a patent agent or lawyer before you sell or publicly demonstrate the invention, not after.
Can I patent something and still keep parts of it secret?
Sometimes. A patent only protects what's disclosed in the application itself — related know-how that isn't included, like a specific manufacturing technique, may remain a trade secret, as long as it's genuinely kept confidential.
What do I actually need to protect a trade secret?
There's no registration, but you need real safeguards: written confidentiality agreements with employees, contractors, and business partners, restricted access to sensitive information, and internal policies that treat the information as genuinely confidential, not just labelled that way.
Does a non-disclosure agreement (NDA) alone protect a trade secret?
An NDA is an important piece, but it's not the whole picture. Courts also look at what steps you actually took to keep the information secret in practice — an NDA that isn't backed up by real access controls and confidentiality practices is weaker protection than one that is.
This is a corporate question
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