Trade Secrets

Attia v. Google: The DTSA Reaches Pre-Enactment Secrets, But Only If They Survive

The Ninth Circuit endorses a continued-use theory under the Defend Trade Secrets Act, then holds that Google's published patent applications extinguished the very secret the plaintiff needed.

February 19, 2026
A patent application document beside a glowing blueprint of a building design system
Attia shows the DTSA's reach over continuing misappropriation colliding with the trade-secret-destroying effect of patent publication. Shutterstock
Educational content, not legal advice. This article explains general legal concepts. It does not create an attorney–client relationship. For your specific situation, consult a licensed attorney.

In Attia v. Google LLC, No. 19-15771 (9th Cir. Dec. 16, 2020), the United States Court of Appeals for the Ninth Circuit took up one of the most consequential timing questions left open by the Defend Trade Secrets Act of 2016: whether a plaintiff may sue under the federal statute when the alleged misappropriation began years before the Act became law, so long as the defendant kept exploiting the secret afterward. A panel of Judges J. Clifford Wallace, A. Wallace Tashima, and Bridget S. Bade answered yes in principle—adopting a “continued use” reading of the DTSA that favors trade-secret owners—while affirming the dismissal of Eli Attia’s claim on a ground that swallowed the victory. The case arose from architect Eli Attia’s allegations that Google misappropriated his “Engineered Architecture” building-design technology after he disclosed it under a partnership; the appeal reached the Ninth Circuit from the Northern District of California, where Judge Beth Labson Freeman (No. 5:17-cv-06037) had dismissed Attia’s federal RICO and DTSA claims with prejudice and remanded the state-law claims. The Ninth Circuit affirmed, producing a decision that practitioners now cite both for what it gives plaintiffs and for the trap it lays for them.

At a glance

  • Case: Attia v. Google LLC, No. 19-15771
  • Court: U.S. Court of Appeals for the Ninth Circuit
  • Decided: December 16, 2020
  • Panel: J. Clifford Wallace, A. Wallace Tashima, Bridget S. Bade
  • Below: N.D. Cal. (Judge Beth Labson Freeman), No. 5:17-cv-06037, dismissal of federal claims with prejudice
  • Holding (timing): Misappropriation of a trade secret before the DTSA’s enactment does not bar a claim arising from post-enactment misappropriation or continued use of the same secret
  • Holding (dispositive): Attia nonetheless lacked a DTSA claim because Google’s 2012 patent applications published the information and extinguished its trade-secret status before the DTSA took effect
  • Disposition: Affirmed; RICO and DTSA dismissals upheld

The DTSA, signed into law on May 11, 2016, did not rewrite the substantive law of trade secrets so much as federalize it, importing the familiar Uniform Trade Secrets Act vocabulary—“trade secret,” “misappropriation,” “improper means”—into 18 U.S.C. § 1836 and opening the federal courthouse doors to any owner of a secret tied to interstate or foreign commerce. But the statute also carried a critical limiting instruction about when it applies, and Attia is the appellate decision that gave that instruction its dominant interpretation.

The DTSA’s effective-date clause and the continued-use problem

The pivotal text is not in the United States Code at all. Section 2(e) of the DTSA, an uncodified effective-date provision, states that the amendments “shall apply with respect to any misappropriation of a trade secret … for which any act occurs on or after the date of the enactment of this Act.” The clause is deceptively simple. It plainly forecloses suing under the DTSA for a misappropriation that was complete before May 11, 2016. But trade-secret misappropriation is frequently not a discrete event. A defendant who acquires a secret by improper means in 2012 and continues to use it in its products in 2018 has, on any natural reading, committed an “act” of misappropriation in 2018. Does § 2(e) reach that ongoing conduct, or does the pre-enactment origin of the wrongdoing immunize everything that flows from it?

That question matters because the answer determines whether a large swath of older misappropriations can be litigated under the more powerful federal statute—with its nationwide service, its ex parte seizure remedy, its exemplary damages and fee-shifting—or whether plaintiffs are confined to state UTSA claims. Attia’s case put the issue squarely: the conduct he complained of began around 2011–2012, years before the DTSA existed, yet he alleged Google continued to exploit his technology long afterward.

How the Ninth Circuit read Congress’s silence

The court’s reasoning turned on a comparison between the DTSA and its state-law template. The UTSA contains an express anti-continued-use provision. Section 11 of the uniform act declares that it “does not apply to the continuing misappropriation that occurs after the effective date” when the misappropriation began before that date—a deliberate choice to wall off pre-enactment conduct entirely, even when it bleeds past the statute’s start. The DTSA, by contrast, contains no analogue. Congress, drafting against the backdrop of a uniform statute it plainly knew, simply omitted any continuing-misappropriation carve-out.

The Ninth Circuit treated that omission as meaningful. As the panel put it, “the misappropriation of a trade secret prior to the enactment of the DTSA does not preclude a claim arising from post-enactment misappropriation or continued use.” Had Congress wished to bar claims built on post-enactment continued use of secrets first taken earlier, it knew exactly how—by lifting the UTSA’s section 11 language into the federal text. Its failure to do so, the court reasoned, evinced a congressional intent for the DTSA to reach post-enactment misappropriation even where the underlying scheme predated the statute. The decision thereby aligned the Ninth Circuit with district courts that had read § 2(e)‘s “any act … on or after” formulation to capture continuing conduct, and it gave the continued-use theory its most authoritative appellate endorsement.

This is the plaintiff-friendly half of Attia. It means a defendant cannot defeat a DTSA claim merely by showing that the first wrongful acquisition happened before May 2016. What counts is whether some qualifying act—a new use, a new disclosure, continued exploitation—occurred after the effective date.

Why Attia still lost: publication and the disappearance of the secret

Having handed plaintiffs a favorable timing rule, the court denied Attia its benefit. The continued-use doctrine presupposes that a trade secret still exists to be used; it answers a timing question, not the antecedent question of whether the information remained secret at all. And on that antecedent question, Google had a decisive fact: its own patent applications.

Attia alleged that he disclosed his Engineered Architecture technology to Google around 2010 under collaboration agreements, that Google then filed patent applications drawing on that technology in 2011, and that those applications published in 2012. Patent publication is the classic destroyer of trade secrecy. The premise of trade-secret protection is that the information derives independent economic value from not being generally known; once the same information is disclosed to the world in a published patent application, it is, by definition, generally known and ascertainable. The court held that Google’s 2012 patent publications placed the information in the public domain and necessarily extinguished its trade-secret status.

The consequence for the DTSA claim was fatal and, in the court’s framing, jurisdictional in flavor: Attia lacked standing to assert a DTSA claim because, by the time the statute took effect in May 2016, there was no protectable trade secret left for Google to misappropriate or continue using. A DTSA plaintiff must own a trade secret as of the period the statute governs. If the secret died in 2012 when the applications published, then nothing existed in 2016 onward to anchor a continued-use theory. The favorable timing rule had nothing to operate on.

The structure of the opinion is its lesson. The court could have stopped at the timing question, but it deliberately separated two inquiries that litigants often conflate: when the DTSA applies and whether the plaintiff has a secret to invoke it. A continued-use theory can carry a plaintiff over the effective-date hurdle and still leave the claim to die because the information lost its confidential character along the way. The panel likewise affirmed dismissal of Attia’s RICO and RICO-conspiracy claims, finding he had not pleaded a pattern of racketeering activity built on at least two adequately related predicate acts.

Open questions

Attia settles the headline timing rule in the Ninth Circuit but leaves its boundaries unmapped. The opinion does not define what minimum “act” after May 11, 2016 suffices to trigger the DTSA—whether passive retention of a secret counts as continued “use,” or whether the plaintiff must allege an affirmative post-enactment act of exploitation or disclosure. Nor does it address how the continued-use theory interacts with the DTSA’s three-year statute of limitations, which runs from when the misappropriation “is discovered or by the exercise of reasonable diligence should have been discovered” and treats a continuing misappropriation as a single claim. A plaintiff who clears the effective-date gate by pointing to recent use may still find that the limitations clock started running years earlier. The decision also leaves untouched the harder factual scenarios in which secrecy erodes only partially—where some elements of a combination secret are published and others are not—and how a court should parse continued use of the surviving portion. Those questions await cases where the secret does not vanish as cleanly as Attia’s did.

Implications

  • Pre-2016 misappropriation is not a safe harbor. In the Ninth Circuit, a defendant cannot defeat a DTSA claim simply by showing the scheme began before the Act; counsel must instead attack whether any qualifying act occurred post-enactment and whether a secret still existed.
  • Patent publication remains the trade-secret killer. Any party weighing patent protection alongside trade-secret protection must understand that publication of the application forecloses the secret going forward; the two regimes are, for the disclosed subject matter, mutually exclusive.
  • Plead the post-enactment act with specificity. Plaintiffs relying on continued use should allege concrete post-May-2016 acts of use or disclosure, not merely that an old taking has ongoing effects.
  • Separate timing from existence. A favorable effective-date ruling is worthless if the secret lapsed; defense counsel should look first for public disclosures—patents, publications, product releases—that extinguished secrecy before the DTSA window.
  • Watch the limitations interaction. Continued-use pleading that survives the effective-date inquiry may still expose the claim to a limitations defense measured from much earlier discovery.

Frequently asked questions

Did the Ninth Circuit hold that the DTSA never reaches conduct beginning before 2016? No. It held the opposite as a matter of law: pre-enactment misappropriation “does not preclude a claim arising from post-enactment misappropriation or continued use” of the same secret. The plaintiff-favorable timing rule is the durable holding of the case.

Then why did Attia lose? Because the timing rule presupposes a surviving secret, and Attia had none. Google’s 2012 patent applications published the Engineered Architecture information, extinguishing its trade-secret status before the DTSA took effect in 2016. With no protectable secret remaining, Attia lacked standing to assert a DTSA claim, and the continued-use theory had nothing to operate on.

What is the practical lesson for a company deciding between patents and trade secrets? The two cannot protect the same disclosed information at once. Filing and publishing a patent application destroys trade-secret status in whatever it discloses. Attia is a vivid illustration: the very patent filings at the center of the dispute are what defeated the trade-secret claim founded on the same technology.

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