Examples of trade secrets range from soft-drink formulas and semiconductor process recipes to search-engine algorithms, curated customer databases, and even records of failed experiments. Under federal law, almost any financial, business, scientific, technical, or engineering information can qualify, provided the owner takes reasonable steps to keep it confidential and the secrecy itself gives the information economic value.1Office of the Law Revision Counsel. 18 USC 1839 – Definitions That two-part test is what separates a protectable secret from ordinary internal data: if a competitor could pull the same information from a public database, it doesn’t qualify.
The statutory definition is deliberately broad. It reaches formulas, designs, prototypes, compilations, programs, methods, techniques, and processes, whether stored on paper, on a hard drive, or only in someone’s head.1Office of the Law Revision Counsel. 18 USC 1839 – Definitions The categories below show what that looks like across real industries.
Proprietary Formulas and Recipes
The most famous trade secrets are formulas. The Coca-Cola concentrate recipe and WD-40’s lubricant blend have been kept confidential for decades, not through patents but through secrecy alone. Both companies made a deliberate choice: a patent would have given them a 20-year monopoly and then handed the exact recipe to every competitor.2Office of the Law Revision Counsel. 35 US Code 154 – Contents and Term of Patent; Provisional Rights Kept secret instead, protection lasts as long as the information stays confidential.
The category extends well beyond beverages and household products. Pharmaceutical companies guard proprietary chemical synthesis routes. Food manufacturers protect seasoning blends and fermentation processes. Cosmetics firms keep skin-care formulations under wraps. The common thread is that a competitor who obtained the exact formula could replicate the product at a fraction of the original development cost.
One wrinkle is worth knowing. Companies sometimes have to share formula details with government regulators for safety or environmental compliance. Federal law protects that information from public release under a Freedom of Information Act exemption for trade secrets and confidential commercial data.3Office of the Law Revision Counsel. 5 USC 552 – Public Information; Agency Rules, Opinions, Orders, Records, and Proceedings Filing a required disclosure with a regulator doesn’t automatically destroy the secret.
Manufacturing Methods and Technical Processes
How a product is built often matters as much as what’s in it. Specialized heat-treatment cycles for aerospace parts, chemical baths used in semiconductor fabrication, and proprietary quality-control sequences are all textbook trade secrets. These processes let a manufacturer hit tolerances, speeds, or yields competitors can’t easily match.
This kind of knowledge tends to live on the shop floor rather than in a filing cabinet. It includes machine calibration settings, the order of production steps, temperature and pressure profiles, and the informal techniques experienced operators develop over years. Courts recognize that this practical know-how qualifies for protection even when no single document spells it out.
Software, Algorithms, and Source Code
Search-engine ranking algorithms, recommendation engines, and fraud-detection systems are among the most economically valuable trade secrets in existence. The source code behind these tools is almost never released publicly, and for good reason: copyright protects only the code as written, not the underlying logic or method. A competitor who understood the algorithm could rewrite it from scratch in different code without infringing the copyright.1Office of the Law Revision Counsel. 18 USC 1839 – Definitions
Trade secret law fills that gap by protecting the idea itself, not just the expression. That makes it a natural fit for proprietary algorithms, machine-learning model architectures, and data-processing pipelines a company keeps confidential. Whether the secret lives in compiled software distributed to customers or in-house code that never leaves the server, the key question is the same: did the company take reasonable steps to restrict access?
Commercial and Business Information
Not every trade secret involves technology. Some of the most fiercely litigated cases involve customer lists, vendor pricing, and strategic plans. A customer list that simply reproduces names from a public directory probably won’t qualify. But a curated database of contacts enriched with purchasing histories, account preferences, and relationship notes, built over years of business, is a different story. Courts have held that even compilations of publicly available data can be trade secrets when the compilation itself required significant effort and adds real value.
Other common commercial trade secrets include:
- Vendor pricing and cost structures. Knowing what a competitor pays its suppliers lets a rival undercut bids with precision.
- Employee compensation data. Detailed salary and bonus structures help a competitor poach specific people with targeted offers.
- Marketing strategies and launch timelines. Advance knowledge of a product release lets a competitor time a spoiler campaign.
- Financial projections and deal terms. Internal forecasts reveal vulnerabilities that competitors or negotiating partners could exploit.
The economic value of these items comes specifically from their secrecy. Once a competitor knows your vendor pricing, the advantage evaporates, and so does the trade secret status.
Research Data and Negative Know-How
Laboratory notebooks, prototype designs, and test results represent enormous investments of time and money. What surprises many people is that records of failed experiments are just as protectable as breakthroughs. The official commentary to the Uniform Trade Secrets Act specifically recognizes that “the results of lengthy and expensive research which proves that a certain process will not work” can have great value to a competitor. Courts have repeatedly enforced this principle, sometimes calling it “negative know-how.”
The logic is straightforward. A competitor who knows which approaches failed can skip those dead ends entirely, saving months or years of development time. That head start has clear economic value, which is exactly what the statute requires.1Office of the Law Revision Counsel. 18 USC 1839 – Definitions
Unpublished patent applications are another form of protected R&D data. The Patent and Trademark Office keeps applications confidential by default, and federal regulations restrict public access until publication or grant.4Office of the Law Revision Counsel. 35 USC 122 – Confidential Status of Applications; Publication of Patent Applications If someone steals the application contents before that point, the company can pursue both trade secret and patent-related remedies.
What Does Not Qualify
Two important limits shape the list of examples above. First, information a competitor can lawfully obtain doesn’t get protection just because you called it confidential. Buying a product on the open market and taking it apart to figure out how it works is legal. So is arriving at the same formula or process through independent research. The Defend Trade Secrets Act draws a bright line: reverse engineering and independent derivation are not improper means of acquisition.1Office of the Law Revision Counsel. 18 USC 1839 – Definitions A product feature a competitor could dissect in a lab is a poor candidate for trade secret protection; a complex chemical formula or a manufacturing process that resists reverse engineering is a good one.
Second, the owner has to actually behave as if the information is a secret. Courts require “reasonable measures” to maintain secrecy, and what counts as reasonable depends on the value of the information, the size of the company, and how complex the organization is. Physical measures courts routinely look for include locked storage for sensitive documents, badge-controlled access to restricted areas, and limiting access to employees who genuinely need the information for their jobs. On the digital side, that means password-protected systems with tiered access permissions and monitoring of file activity, particularly when employees leave. Non-disclosure agreements with employees and outside partners are close to universal, and the specific language should define what counts as confidential and require the signer to take precautions against accidental disclosure.5United States Patent and Trademark Office. Intellectual Property Toolkit – Trade Secrets Skip these steps, and a court may find you didn’t take secrecy seriously enough to deserve protection.
When Trade Secret Status Ends
Unlike a patent with a fixed expiration date, a trade secret can theoretically last forever. In practice, protection ends the moment the information stops being secret. That can happen through accidental disclosure, a security breach, an employee who talks too freely, or a competitor who independently develops the same information.
A less obvious way to lose protection is neglect. If a company stops taking reasonable measures to guard the secret, or if the information stops providing economic value because the company has moved on to a new product generation and abandoned the old one, courts may find that the trade secret no longer qualifies. The economic-value requirement isn’t a one-time test; it has to remain true for as long as the protection lasts.1Office of the Law Revision Counsel. 18 USC 1839 – Definitions
That fragility is the price of potentially unlimited duration. A patent protects you even if the whole world knows how your invention works. A trade secret protects you only as long as nobody else does.