What is a Trade Secret, Legally?

(Trade Secret Law Lecture Series)

Lecture Overview

Trade secret law protects valuable business information that derives its economic value from remaining confidential. Unlike trademark and copyright law, which grant exclusive rights through federal statutory systems, trade secret protection historically developed through state common law governing unfair competition. Modern trade secret law is now shaped by both state statutes — primarily the Uniform Trade Secrets Act — and a federal cause of action created by the Defend Trade Secrets Act. This lecture explains the legal foundations of trade secret protection in the United States. We begin by examining the historical origins of trade secret law, then review the statutory framework governing trade secret protection. From there we unpack the legal definition of a trade secret and the elements required to establish protection. Finally, we consider key judicial decisions and the practical implications of trade secret law for businesses that rely on confidential information.

1. Historical Origin

Trade secret law developed through the common law long before modern intellectual property statutes emerged. Early courts recognized that certain forms of confidential business information — such as manufacturing processes, formulas, customer lists, and internal methods — could provide substantial economic advantages if kept secret.

Unlike patents, which protect publicly disclosed inventions for a limited period of time, trade secrets protect information precisely because it remains undisclosed. (See Lecture: Trade Secrets vs Patents — Lecture Pending). The law therefore developed around the principle that businesses should be protected from competitors who obtain valuable confidential information through improper means.

Historically, these disputes were addressed through doctrines of unfair competition and breach of confidence (See Lecture: What Is Unfair Competition, Legally?). Courts intervened when a party improperly obtained or disclosed confidential business information that another party had taken steps to keep secret. (See Lecture: Trade Secret Misappropriation — Lecture Pending)

As commercial competition intensified during the twentieth century, states began to codify these principles through statutory frameworks designed to create greater uniformity in trade secret protection.

2. Statutory Framework

Modern trade secret law in the United States operates through both state statutes and a federal cause of action.

Most states have adopted some version of the Uniform Trade Secrets Act (UTSA), which was first promulgated in 1979. The UTSA provides a standardized definition of trade secrets and establishes civil remedies for the misappropriation of protected information.

In 2016, Congress enacted the Defend Trade Secrets Act (DTSA), codified at 18 U.S.C. §§ 1831 - 1839. The DTSA created a federal civil cause of action for trade secret misappropriation while preserving the existing state law framework. As a result, trade secret disputes today often involve both federal and state law claims.

Although the UTSA and DTSA differ in certain procedural details, they rely on largely similar definitions of what constitutes a trade secret and what conduct qualifies as misappropriation (See Lecture: Trade Secret Misappropriation — Lecture Pending).

Together, these statutes form the modern legal framework governing trade secret protection in the United States.

3. The Doctrine: What Qualifies as a Trade Secret

Under both the UTSA and the DTSA, a trade secret generally consists of information that satisfies three core requirements.

First, the information must derive independent economic value from not being generally known. In other words, the information must provide a competitive advantage precisely because it remains secret.

Second, the information must not be readily ascertainable by proper means. Information that can easily be discovered through legitimate methods — such as reverse engineering or public observation — typically does not qualify as a trade secret.

Third, the owner of the information must make reasonable efforts to maintain its secrecy. These efforts may include confidentiality agreements, restricted access policies, security measures, and other practices designed to prevent disclosure. (See Lecture: Reasonable Secrecy Measures - Lecture Pending)

Trade secrets can encompass a wide range of business information, including:

  • formulas and manufacturing processes

  • software algorithms and technical data

  • customer lists and pricing strategies

  • marking plans and internal business methods

The defining characteristic of trade secrets is that their value depends on continued confidentiality.

Trade secret protection therefore differs fundamentally from other forms of intellectual property. Copyright protects creative expression fixed in tangible form (See Lecture: What Is Copyright, Legally?). Trademark law protects symbols that identify the source of goods and services in commerce (See Lecture: What Is a Trademark, Legally?). Trade secret law, by contrast, protects confidential business information that derives value from secrecy.

4. Key Cases

Judicial decisions have played an important role in defining the scope and purpose of trade secret protection.

In Kewanee Oil Co. v. Bicron Corp., 416 U.S. 470 (1974), the Supreme Court addressed whether trade secret law was preempted by federal patent law. The Court held that trade secret protection could coexist with the patent system because the two regimes serve different purposes. Patent law encourages public disclosure of inventions, while trade secret law protects confidential information that businesses choose not to disclose.

Another influential decision is E.I. duPont deNemours & Co. v. Christopher, 431 F.2d 1012 (5th Cir. 1970). In that case, the defendants hired a pilot to take aerial photographs of a chemical plant under construction in order to discover the plaintiff’s manufacturing process. The court held that obtaining trade secrets through such surveillance constituted improper means of acquisition.

A later case, PepsiCo, Inc. v. Redmond, 54 F.3d 1262 (7th Cir. 1995), addressed the risk that a departing employee might inevitably disclose trade secrets when joining a competitor. The court recognized the doctrine of inevitable disclosure, under which courts may restrict certain employment transitions when disclosure of confidential information is highly likely. (See Lecture: Employee Mobility and Trade Secrets — Lecture Pending)

These cases illustrate the range of issues that arise in trade secret disputes, including the definition of improper acquisition and the relationship between trade secrets and other areas of intellectual property law.

5. Practical Implications and Open Questions

Trade secret law plays a central role in protecting commercially valuable information that may not qualify for protection under other intellectual property regimes.

For businesses, trade secrets often include proprietary manufacturing processes, software code, customer data, and strategic plans. Maintaining protection for this information requires organizations to implement policies designed to preserve confidentiality.

Unlike patents or copyrights, trade secret protection can potentially last indefinitely, so long as the information remains secret and continues to derive economic value from that secrecy.

At the same time, trade secret law must balance the protection of confidential business information with legitimate competition and employee mobility. Courts frequently confront disputes involving former employees who move between competitors while possessing knowledge of confidential information.

As modern industries increasingly depend on data, algorithms, and confidential technical information, trade secret law continues to evolve in response to new technological and commercial realities.

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About the Author

David Bosland is an intellectual property attorney who advises businesses and creators on trademark protection, copyright enforcement, and brand strategy. Learn more about David Bosland.