California
California Trade Secret Laws: UTSA, Remedies & Deadlines
California's California Uniform Trade Secrets Act (CUTSA), Cal. Civ. Code §§ 3426 to 3426.11, enacted in 1984, is distinctive for its broad preemption rule: California courts consistently interpret CUTSA to displace virtually all competing common-law tort theories that rest on the same facts as a trade secret misappropriation claim. The limitations period is three years from discovery.
This guide is part of our Trade Secret Laws by State series.
Information last verified on 2026-06-25. This article presents general legal information, not legal advice. For guidance specific to your situation, see our full Trade Secret Laws by State resource or consult an attorney licensed in California.
Does California have a trade secret law?
Yes. California enacted CUTSA in 1984, codified at Cal. Civ. Code §§ 3426 to 3426.11. CUTSA covers civil misappropriation claims and preempts conflicting civil causes of action based on the same underlying facts (Cal. Civ. Code § 3426.7). California courts have applied this preemption broadly, routinely dismissing conversion, unjust enrichment, intentional interference, and similar common-law tort claims when the alleged wrongdoing amounts to trade secret misappropriation. Federal criminal liability may also arise under the Economic Espionage Act, 18 U.S.C. §§ 1831-1832, and the federal DTSA provides a parallel civil cause of action that is not displaced by CUTSA.
What counts as a trade secret and misappropriation in California?
Under Cal. Civ. Code § 3426.1(d), a trade secret is information, including a formula, pattern, compilation, program, device, method, technique, or process, that (1) derives independent economic value, actual or potential, from not being generally known to or readily ascertainable by others who could gain economic value from it, and (2) is subject to reasonable efforts to maintain its secrecy.
Misappropriation under Cal. Civ. Code § 3426.1(b) means acquisition by improper means, or disclosure or use without consent by someone who knew or should have known the information was obtained through improper means or under a duty of secrecy. Improper means include theft, bribery, misrepresentation, breach of a duty to maintain secrecy, and espionage. Reverse engineering and independent development are expressly lawful under CUTSA and do not constitute misappropriation.
Remedies and the limitations period in California
Cal. Civ. Code § 3426.2 authorizes injunctive relief to prevent actual or threatened misappropriation, including orders prohibiting future use. In exceptional circumstances where an injunction would be inequitable, a court may instead require payment of a reasonable royalty for the duration of unauthorized use.
Actual damages plus unjust enrichment, or a reasonable royalty where neither can be proved with certainty, are available under Cal. Civ. Code § 3426.3. Willful and malicious misappropriation allows the court to award exemplary damages of up to twice the compensatory amount. Attorney fees may be awarded when a claim or motion is made in bad faith or when willful and malicious misappropriation is established (Cal. Civ. Code § 3426.4).
The three-year limitations period runs from when the plaintiff discovered the misappropriation, or through reasonable diligence should have discovered it (Cal. Civ. Code § 3426.6). California courts apply a discovery rule; the clock does not automatically start on the date the first act of misappropriation occurred.
CUTSA's super-preemption and how it affects California litigation
CUTSA's preemption provision (Cal. Civ. Code § 3426.7) is broader than preemption in most UTSA states. When a plaintiff's common-law claims, such as conversion, interference with prospective economic advantage, or fraud, share factual allegations with the trade secret claim, California courts dismiss those independent claims as preempted. Plaintiffs must structure their complaints carefully: only allegations that rest on facts wholly independent from the misappropriation will survive.
CUTSA preemption does not extend to criminal prosecution, contract claims, or civil claims based on entirely separate conduct. It also leaves untouched any remedies available under the federal DTSA. Defendants in California trade secret litigation routinely file early motions to narrow or dismiss preempted counts, so plaintiffs benefit from clearly separating any non-misappropriation theories in their initial filings.
How the federal DTSA applies in California
The Defend Trade Secrets Act of 2016, 18 U.S.C. §§ 1836-1839, creates a federal civil remedy when the trade secret relates to a product or service used in, or intended for use in, interstate or foreign commerce. The DTSA does not preempt CUTSA (18 U.S.C. § 1838), and plaintiffs in California federal courts regularly plead both claims together. The DTSA's three-year limitations period matches CUTSA's period (18 U.S.C. § 1836(d)).
Federal remedies include injunction, actual damages, unjust enrichment or a reasonable royalty, exemplary damages up to 2x for willful and malicious misappropriation, and attorney fees (18 U.S.C. § 1836(b)(3)). Any confidentiality agreement signed or updated after May 11, 2016, must include a whistleblower-immunity notice under 18 U.S.C. § 1833(b)(3). Omitting it forfeits exemplary damages and attorney fees under the DTSA. California employers with large workforces and extensive use of NDAs face particular exposure to this requirement.
As of 2026-06-25, this article reflects California statutes and federal law as publicly available. Laws change; consult a lawyer licensed in California before taking or forgoing any legal action.
Related articles
- Trade Secret Laws by State
- Nevada Trade Secret Laws
- Arizona Trade Secret Laws
- Is AI-generated code copyright infringement?
Last updated: 2026-06-25.
Frequently Asked Questions
Does CUTSA preemption eliminate all non-trade-secret claims in California?
No. CUTSA preempts civil claims that are based on the same underlying facts as the trade secret misappropriation. Claims arising from wholly independent conduct, contract claims, and criminal charges are not preempted. California courts examine whether the complaint's allegations depend on the same conduct that constitutes the alleged misappropriation before dismissing a parallel count.
Can a former employee's customer relationships be a trade secret in California?
Customer lists and relationship data can qualify as trade secrets in California if they derive economic value from secrecy and are protected by reasonable measures, such as restricted access and confidentiality agreements. California Labor Code § 16600 also broadly restricts non-compete clauses, so trade secret law is often the primary tool for protecting customer relationships after a departure.
When does the three-year CUTSA clock begin in California?
The period starts when the plaintiff discovered the misappropriation or, through the exercise of reasonable diligence, should have discovered it (Cal. Civ. Code § 3426.6). California applies a discovery rule, so the clock is tied to knowledge or constructive notice, not necessarily to the date the first misappropriation occurred.
What happens if a California employer omits the DTSA whistleblower notice?
Omitting the required notice from a confidentiality agreement signed or updated after May 11, 2016, means the employer cannot seek exemplary damages or attorney fees under the DTSA in any subsequent misappropriation action. The underlying trade secret claim remains available, and CUTSA remedies are unaffected; only those two enhanced federal remedies are forfeited.
Is reverse engineering lawful in California?
Yes. CUTSA expressly permits reverse engineering and independent development as lawful means of acquiring information. A party that independently recreates a formula, process, or device through legitimate analysis does not commit misappropriation under California law, even if the resulting information is identical to the trade secret.
Updates
Governing law re-checked for recent changes
Governing law re-checked for recent changes
The Law Behind This Article
This article rests on 5 statutory provisions held in our own legal record, each retrieved from the official source. Tap a section to read the operative text.
California Civil Code
§ 3426In forcecited in 2 of our articles
This title may be cited as the Uniform Trade Secrets Act.
Official text (excerpt) · as of 2026-07-28 · Read the full section at leginfo.legislature.ca.gov
Also relied on in: Trade Secret Laws by State: UTSA & DTSA (2026)
United States Code Title 18
§ 1831Economic espionageIn forcecited in 24 of our articles
Whoever, intending or knowing that the offense will benefit any foreign government, foreign instrumentality, or foreign agent, knowingly— steals, or without authorization appropriates, takes, carries away, or conceals, or by fraud, artifice, or deception obtains a trade secret; without authorization copies, duplicates, sketches, draws, photographs, downloads, uploads, alters, destroys, photocopies, replicates, transmits, delivers, sends, mails, communicates, or conveys a trade secret; receives, buys, or possesses a trade secret, knowing the same to have been stolen or appropriated, obtained, or converted without authorization; attempts to commit any offense described in any of paragraphs (1) through (3); or conspires with one or more other persons to commit any offense described in any of paragraphs (1) through (3), and one or more of such persons do any act to effect the object of the conspiracy, shall, except as provided in subsection (b), be fined not more than $5,000,000 or imprisoned not more than 15 years, or both.
Official text (excerpt) · as of 2026-07-28 · Read the full section at uscode.house.gov
Also relied on in: Arkansas Trade Secret Laws: UTSA, Remedies & Deadlines, Colorado Trade Secret Laws: UTSA, Remedies & Deadlines, Connecticut Trade Secret Laws: UTSA, Remedies & Deadlines
§ 1833Exceptions to prohibitionsIn forcecited in 40 of our articles
This chapter does not prohibit or create a private right of action for— any otherwise lawful activity conducted by a governmental entity of the United States, a State, or a political subdivision of a State; or the disclosure of a trade secret in accordance with subsection (b). An individual shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of a trade secret that— is made— in confidence to a Federal, State, or local government official, either directly or indirectly, or to an attorney; and solely for the purpose of reporting or investigating a suspected violation of law; or is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal. An individual who files a lawsuit for retaliation by an employer for reporting a suspected violation of law may disclose the trade secret to the attorney of the individual and use the trade secret information in the court proceeding, if the individual— files any document containing the trade secret under seal; and does not disclose the trade secret, except pursuant to court order.
Official text (excerpt) · as of 2026-07-28 · Read the full section at uscode.house.gov
Also relied on in: Alabama Trade Secret Laws: UTSA, Remedies & Deadlines, Alaska Trade Secret Laws: UTSA, Remedies & Deadlines, Arizona Trade Secret Laws: UTSA, Remedies & Deadlines
§ 1836Civil proceedingsIn forcecited in 52 of our articles
The Attorney General may, in a civil action, obtain appropriate injunctive relief against any violation of this chapter. An owner of a trade secret that is misappropriated may bring a civil action under this subsection if the trade secret is related to a product or service used in, or intended for use in, interstate or foreign commerce. Based on an affidavit or verified complaint satisfying the requirements of this paragraph, the court may, upon ex parte application but only in extraordinary circumstances, issue an order providing for the seizure of property necessary to prevent the propagation or dissemination of the trade secret that is the subject of the action.
Official text (excerpt) · as of 2026-07-28 · Read the full section at uscode.house.gov
Also relied on in: Delaware Trade Secret Laws: UTSA, Remedies & Deadlines, District of Columbia Trade Secret Laws: UTSA, Remedies & Deadlines, Florida Trade Secret Laws: UTSA, Remedies & Deadlines
§ 1838Construction with other lawsIn forcecited in 52 of our articles
Except as provided in section 1833(b), this chapter shall not be construed to preempt or displace any other remedies, whether civil or criminal, provided by United States Federal, State, commonwealth, possession, or territory law for the misappropriation of a trade secret, or to affect the otherwise lawful disclosure of information by any Government employee under section 552 of title 5 (commonly known as the Freedom of Information Act).
Official text (excerpt) · as of 2026-07-28 · Read the full section at uscode.house.gov
Also relied on in: Georgia Trade Secret Laws: UTSA, Remedies & Deadlines, Hawaii Trade Secret Laws: UTSA, Remedies & Deadlines, Idaho Trade Secret Laws: UTSA, Remedies & Deadlines
Search our full record of US law — 1.79 million sections, every state + federal →
Sources and References
- California Uniform Trade Secrets Act, Cal. Civ. Code §§ 3426 to 3426.11(leginfo.legislature.ca.gov).gov
- Defend Trade Secrets Act, 18 U.S.C. §§ 1836-1839(law.cornell.edu)
- Uniform Trade Secrets Act (Uniform Law Commission)(uniformlaws.org)
- Economic Espionage Act, 18 U.S.C. §§ 1831-1832(law.cornell.edu)