Patent vs. Copyright vs. Trademark: When to Use Each

The 30-second decision tree

If you're not sure which one you need, walk through these in order:

Most products need two or three of these at once. A mobile app might use copyright for the source code, a trademark for the app name and logo, and a patent for a novel algorithm inside it.

Patents: protect how something works

A patent gives you the exclusive right to make, use, sell, or import your invention in the US for a fixed term. Patents protect the underlying idea or mechanism, not a specific implementation.

Use a patent when:

• You've invented a new device, process, machine, or composition of matter.
• The invention is non-obvious to a person skilled in your field.
• You can describe how to make and use it in enough detail that someone else could reproduce it.
• The commercial value justifies $2K–$20K+ in costs and 1–3 years of waiting for examination.

Don't use a patent when:

• You're protecting a name or brand — that's a trademark.
• You're protecting written code, text, or art — that's copyright.
• You can keep the invention secret indefinitely and it's not easy to reverse-engineer — a trade secret is cheaper.
• Your invention is "obvious in light of the prior art" — most rejected patents fail this test.

A patent is also a disclosure bargain: in exchange for protection, you publish exactly how your invention works. After 20 years, anyone can make it.

Copyrights: protect creative expression

Copyright protects original works of authorship the moment they're fixed in a tangible medium — written down, recorded, saved to a file. You don't have to register a copyright for protection to exist, but you do have to register to sue for infringement.

Use copyright when:

• You've written original text (books, articles, blog posts, marketing copy).
• You've created software (source code, object code, even configuration files).
• You've made artwork, photography, music, video, or designs.
• You've authored architectural drawings or choreography.

Copyright doesn't protect:

• Ideas — only the specific expression of them. You can copyright your specific novel; you can't copyright "a wizard goes to school."
• Names, titles, or short phrases — those need trademark protection.
• Facts or data — only the original arrangement or selection of facts.
• Useful articles — the functional aspects of a product are patent territory, not copyright.

US copyright registration costs $45–$65 and is handled through the US Copyright Office, not the USPTO.

Trademarks: protect brand identifiers

A trademark is anything that identifies the source of goods or services to consumers — a name, logo, slogan, color, sound, or even a smell. Trademarks prevent others from using a confusingly similar identifier in your market.

Use a trademark when:

• You have a brand name for your product or company.
• You have a distinctive logo.
• You have a slogan or tagline customers recognize.
• You want to prevent competitors from creating consumer confusion about who made what.

Trademark rights have two important wrinkles:

• You get common-law trademark rights from using the mark in commerce, even without registering. But common-law rights are limited to your geographic area of use.
• Federal registration gives you nationwide rights, the ability to sue in federal court, and the ® symbol — but it requires the mark to actually be used in interstate commerce.

Trademarks must be distinctive. "Apple" for computers is distinctive (computers aren't fruit). "Apple" for selling apples isn't — it's just descriptive. The more arbitrary or fanciful your mark, the stronger the protection.

Read more in our Trademarks Hub.

Trade secrets: protect what you can hide

A trade secret is information that has commercial value because it's not generally known and you take reasonable steps to keep it secret. Coca-Cola's formula is the canonical example.

Use a trade secret when:

• The information isn't easy to reverse-engineer from your product.
• You can control who knows it (NDAs, internal access controls).
• The value of keeping it secret exceeds the value of a 20-year patent monopoly.

Don't rely on trade secret when:

• You ship the product to customers who can take it apart (a mechanical device's geometry is hard to keep secret once it's in someone's hands).
• You publish papers or whitepapers about it.
• Employees who know the secret routinely leave for competitors.

Real-world combinations

The best protection often layers multiple IP rights:

• A SaaS product: Copyright on the source code. Trademark on the product name and logo. Patent on a novel algorithm or workflow. Trade secret on internal infrastructure.
• A consumer electronics device: Utility patent on the underlying technology. Design patent on the housing. Trademark on the brand name. Copyright on the user interface artwork.
• A novel: Copyright on the manuscript. Trademark on a distinctive series name (e.g., "Harry Potter").
• A restaurant: Trademark on the name and logo. Trade secret on the signature sauce recipe. Copyright on the menu artwork and marketing materials.

Frequently asked questions

Can I patent a business idea or business method?

Pure abstract ideas aren't patentable. Business methods that are tied to a specific technical implementation may be patentable but face heightened scrutiny under §101 (subject matter eligibility). If your idea is "use AI to do X," it's usually unpatentable unless you've invented a specific novel technical implementation.

What if I just want to protect "my idea"?

Ideas alone are not protected by any form of IP. You can protect the specific expression of an idea (copyright), the specific invention that implements the idea (patent), or the brand you build around it (trademark). The idea itself is free for anyone to have.

Do I need a lawyer for any of these?

Not strictly. Copyright registration and trademark registration are accessible to non-lawyers — the USPTO and Copyright Office both publish guides for unrepresented filers. Patents are more complex, but solo inventors regularly file pro se utility and design patents. Trade secret protection is internal policy (NDAs, access controls) and benefits from legal review when stakes are high.

How does Einstein IP help me decide?

Our intake flow asks the questions that determine which type of protection fits your situation — what's novel, what's the commercial value, what's already in the prior art. The first step is always understanding what's already out there.