Intellectual Property
Trade Secrets
A trade secret can last forever and costs nothing to file — but it vanishes the instant it leaks or is reverse-engineered. Here is what qualifies, the measures you must take to protect one, how the law works, and how to decide between a trade secret and a patent.
Educational guide, not legal advice. Trade-secret programs should be set up with counsel.
What a trade secret is
A trade secret is confidential information that derives economic value from being secret and that you take reasonable steps to keep secret. Both halves matter equally: the information must be genuinely valuable BECAUSE it is not widely known, and you must actually protect it. Valuable information you leave unprotected is not legally a trade secret.
What can be a trade secret is broad: formulas (the Coca-Cola recipe), manufacturing processes, algorithms and source code, customer and supplier lists, pricing strategies, designs, and other confidential business know-how. Unlike patents, there is no subject-matter eligibility test and no examination — protection is automatic the moment the two requirements are met.
The trade-off vs a patent
Trade secrets and patents are opposites. A patent requires you to publicly disclose how your invention works, in exchange for a time-limited (20-year) monopoly. A trade secret requires no disclosure and can last forever — but offers zero protection against two things: independent discovery and legitimate reverse engineering. If a competitor figures out your secret on their own or reverse-engineers it from your product, they are free to use it, and your protection is gone.
This is the core decision. If your innovation is visible in the product or easily reverse-engineered once sold (most physical products and many features), a patent is usually the better protection. If it can be kept genuinely hidden — a manufacturing process, a backend algorithm, a formula that never ships — a trade secret can outlast any patent and costs nothing to "file."
Reasonable measures: how you actually protect one
Trade-secret protection is earned through the measures you take. If you end up in court, the first thing you will have to prove is that you took reasonable steps to keep the information secret. Skipping this is the most common way companies lose trade-secret claims.
NDAs and confidentiality terms
Bind employees, contractors, partners, and anyone exposed to the secret with non-disclosure agreements and confidentiality clauses in employment and vendor contracts.
Need-to-know access controls
Limit the secret to those who genuinely need it. The fewer people who know, the stronger the protection — and the smaller the leak surface.
Marking and labeling
Mark confidential documents and materials as such, so there is no ambiguity that the information was treated as secret.
Physical and digital security
Locked facilities, restricted systems, encryption, access logging. Demonstrable security measures are evidence of reasonable efforts.
Onboarding and exit procedures
Train employees on confidentiality; on departure, conduct exit interviews, recover materials, and remind departing staff of continuing obligations.
A written trade-secret policy
A documented program identifying what is secret and how it is protected makes the 'reasonable measures' case far stronger if litigation comes.
Misappropriation and the DTSA
Trade-secret law protects against misappropriation — wrongful acquisition, disclosure, or use, such as theft, bribery, breach of a confidentiality duty, or espionage. Crucially, it does NOT protect against independent discovery or legitimate reverse engineering, both of which are lawful.
In the US, the Defend Trade Secrets Act (DTSA) of 2016 created a federal civil cause of action, letting owners sue for misappropriation in federal court (in addition to state-law claims under the widely-adopted Uniform Trade Secrets Act). Remedies can include injunctions, damages, and in egregious cases exemplary damages and attorney fees. The DTSA also includes whistleblower-immunity provisions that, to preserve certain remedies, employers should reference in their confidentiality agreements.
Famous trade secrets
The classic example is the Coca-Cola formula — deliberately never patented, because a patent would have required public disclosure and expired decades ago. Kept as a trade secret, it has stayed protected for over a century. Other oft-cited examples include the recipe for certain food products, the methods behind some search and recommendation systems, and proprietary manufacturing processes.
The lesson these examples teach: for the right kind of secret — one that genuinely cannot be reverse-engineered from the end product — secrecy can be far more valuable than the 20-year monopoly a patent would have provided.