Intellectual Property in California: A 2026 Guide for Founders & Creators

If you are a founder or creator in California, most of what you read online about intellectual property is only half the story. Trademarks, copyrights, and patents are federal — the same in Sacramento as in Miami. What actually sets California apart is a cluster of state laws that decide whether you can be stopped from joining a competitor, who controls your face and voice, how a college athlete can get paid, and what counts as a protectable secret. This guide walks through what makes California different and links you to deeper, step-by-step guides on each topic.

Why California is different

California has deliberately built a legal environment that favors mobility, free competition, and individual control over one’s identity. That is not an accident — it is widely credited as part of why Silicon Valley’s talent could move fluidly between companies for decades. For you, that means two practical realities. First, some contract terms that are routine in other states (like a non-compete) are simply void here. Second, California has been first to legislate on emerging issues like AI-generated likenesses and college-athlete pay, so the rules here are often ahead of the rest of the country.

The rest of this guide covers five areas where California law diverges most: non-competes, the right of publicity (including new AI laws), NIL, trade secrets, and content takedowns. Each section is a short overview that links down to a dedicated deep-dive guide.

Non-competes are (almost) unenforceable

This is the single biggest surprise for founders who relocate to California. Under Business and Professions Code section 16600, every contract that restrains someone from engaging in a lawful profession, trade, or business is void, with only narrow exceptions (mainly tied to the sale of a business). In plain terms: a typical employee non-compete that says “you can’t work for a competitor for two years” is unenforceable in California.

Two laws that took effect on January 1, 2024 made this even stronger:

• AB 1076 added section 16600.1, confirming that employee non-competes are unlawful and requiring employers to notify current and certain former employees that their non-competes are void.
• SB 699 added section 16600.5, providing that a contract void under this chapter is unenforceable regardless of where or when it was signed — so an employer generally cannot use an out-of-state non-compete to stop someone from working in California. It also lets employees and prospective employees sue for damages, injunctive relief, and attorney’s fees.

This matters whether you are the employer or the employee. If you are hiring, building your retention strategy around a non-compete is a mistake here. If you are leaving a job to start something new, that clause you signed is probably not the obstacle you fear. For the full picture, see Are non-competes enforceable in California?.

One nuance trips people up: a non-compete is not the same as a confidentiality agreement. NDAs and trade-secret protections are still very much enforceable in California — they just can’t be used as a backdoor non-compete. If you are deciding which agreement you actually need, read NDA vs. non-compete in California.

The right of publicity — and new AI laws

California has long given people strong control over the commercial use of their identity. Civil Code section 3344 protects living people: you generally can’t use someone’s name, voice, signature, photograph, or likeness for advertising or selling without consent. Civil Code section 3344.1 extends a similar right to deceased personalities, which is why the estates of late celebrities can still control the use of their image.

In 2024 California went further to address artificial intelligence, with two laws effective January 1, 2025:

• AB 1836 amended section 3344.1 to create liability for producing, distributing, or making available an unauthorized AI digital replica of a deceased personality’s voice or likeness in expressive works, with limited exceptions (such as news, commentary, criticism, parody, and documentary use) and a statutory minimum award.
• AB 2602 addresses living performers by making certain contract terms unenforceable: a provision allowing a digital replica to replace work the person would have done in person is contrary to public policy unless the contract reasonably describes the intended uses and the person was represented by counsel or a union when negotiating.

For creators, this is a double-edged sword. It means your face and voice — and your AI clone — get meaningful protection. It also means that if you build products that use real people’s likenesses (including synthetic media or voice cloning), you need consent and careful contracts. Start with Right of publicity in California, and browse real disputes in the publicity case archive.

NIL: name, image, and likeness for athletes and creators

California started a national movement here. The Fair Pay to Play Act (SB 206), codified at Education Code section 67456, made California the first state to bar colleges and athletic associations (including the NCAA) from preventing student-athletes from earning compensation for the use of their name, image, and likeness. Crucially, earning NIL money cannot cost a student their scholarship eligibility.

For athletes, this opened the door to sponsorships, endorsements, social-media deals, autograph sessions, and merchandise. For creators and brands, it created a new partner pool — but also new compliance questions about contracts, disclosures, and representation. NIL is really the right of publicity applied to a specific, fast-moving market, so the same identity-control principles apply. For the details, see NIL rights in California.

Trade-secret protection under CUTSA

When information is too valuable (or too hard) to patent, the answer is often a trade secret. California protects these under the California Uniform Trade Secrets Act (CUTSA), found at Civil Code section 3426 and following. A trade secret is information that (1) derives independent economic value from not being generally known and (2) is the subject of reasonable efforts to keep it secret. Classic examples: customer lists, formulas, source code, pricing models, and manufacturing know-how.

The “reasonable efforts” part is where most businesses win or lose. To rely on CUTSA, you generally need to actually behave as if the information is secret:

• Use NDAs and confidentiality clauses with employees, contractors, and partners.
• Limit access to a need-to-know basis, and use passwords and encryption.
• Label and segregate sensitive materials.
• Have clear on-boarding and off-boarding procedures so departing employees return confidential materials.

Remember the California twist from above: you can protect secrets aggressively, but you cannot use trade-secret claims to functionally prevent a former employee from working elsewhere. There is a real line between “don’t take our files” (enforceable) and “don’t compete with us” (not enforceable). For a practical walkthrough, read Protecting a trade secret in California, and review how courts have handled real cases in the trade-secrets case archive.

Content takedowns: enforcing copyright online

If you are a creator, the most common enforcement tool you will actually use isn’t a lawsuit — it’s a takedown. Copyright is federal, but the practical mechanics matter to every California creator publishing online. The Digital Millennium Copyright Act (DMCA) lets you ask platforms (YouTube, Instagram, web hosts, marketplaces) to remove content that infringes your copyrighted work, and it gives those platforms a “safe harbor” if they respond properly.

A valid takedown notice has specific required elements, and sending one carelessly — or targeting fair use — can expose you to a counter-notice or even liability for misrepresentation. The same process protects you in reverse: if someone wrongly targets your content, you can file a counter-notice. Learn how to do it correctly in DMCA takedowns.

How these fit together for a California business

These five areas overlap more than they look. A typical California startup might: rely on trade secrets and NDAs (not non-competes) to protect its know-how; use the right of publicity rules when it features founders, customers, or talent in marketing; navigate AI digital-replica rules if it builds generative tools; partner with NIL athletes for promotion; and use DMCA takedowns to police its content online. Layer the federal basics — trademark for your brand, copyright for your content, patents for inventions — on top, and you have a complete picture. If you are still deciding which federal protection to file first, our companion guide on which IP protection you need is a good starting point.

The bottom line

Intellectual property in California is mostly federal at its core, but the state’s distinctive rules — a near-total non-compete ban, a broad and AI-aware right of publicity, pioneering NIL protections, and its own trade-secret act — often have the biggest day-to-day impact on founders and creators. The practical takeaway: don’t rely on non-competes, take confidentiality and consent seriously, document your secrets, and know your enforcement tools. Then dive into the linked guides for the step-by-step details on whichever issue you are facing.

This article is general legal education, not legal advice, and does not create an attorney-client relationship; for guidance on your specific situation, consult an attorney licensed in your jurisdiction.