Proving access to and use of trade secrets are core elements in a trade secrets misappropriation case.  Recent rulings in a trade secrets action filed by Allergan against its competitor Revance Therapeutics (“Revance”) provide helpful guidance on what is sufficient to plead these elements. There, the court explained what facts are—and are not—sufficient to infer access to and use of trade secrets allegedly misappropriated. The court also explained how examining the similarity of design may help in this analysis. Finally, the court clarified that the ability to reverse engineer alone may not always preclude trade secret protection.  

Plaintiff Allergan, a pharmaceutical company that manufactures and sells botulinum neurotoxin (BoNT) injectable products (under the trade name Botox) and dermal fillers (under the trade name Juvéderm), filed suit against its competitor Revance in May 2023. Allergan alleged that its development of confidential know-how concerning BoNT regulatory, technical, and manufacturing efforts have been critical to Botox’s success. As such, it further alleged that it took significant precautions to ensure the confidentiality of its trade secrets, including implementing written policies and procedures governing its information technologies and limiting access to its trade secrets to certain employees.

As to its allegations against Revance, Allergan alleged that Revance misappropriated its trade secrets and repeatedly poached Allergan employees with access to those secrets, including certain high-level executives. In support of its misappropriation allegations, Allergan claimed that Revance’s misappropriation scheme has allowed it to produce a biosimilar imitating Botox that would be “very challenging (if not impossible) to produce” without access to highly confidential information. That information, according to Allergan, includes its unique potency reference standard used to assess whether manufactured products fall within acceptable potency levels, as well as its regulatory best practices, manufacturing information, drug substance characterization analysis, critical reagents, validation techniques, and stability data.

In response, Revance promptly moved to dismiss, calling Allergan’s complaint “an anticompetitive attempt by Allergen to preserve its place in the market for injectable botulinum toxin therapies.”  Revance asserted that to state a claim for trade secrets misappropriation requires more than simply alleging that Revance hired hired Allergan’s former employees. Revance also argued that Allergan’s complaint failed to describe with particularity the trade secrets that it allegedly misappropriated. In Revance’s words, the “laundry list of purported trade secrets are so broad as to encompass every aspect of Allergan’s business” and the “run-of-the-mill business information” described in the complaint was too vague to state a valid claim.

District Judge Eli Richardson disagreed, denying Revance’s motion to dismiss. The court noted that one former Allergan employee had accessed and downloaded documents containing confidential information, and another prepared and shared a presentation containing Allergan trade secrets in connection with her Revance job interview. The court found those actions sufficient to plausibly allege that Revance acquired trade secrets. In its use analysis, the court acknowledged that Revance is currently seeking FDA approval for a potency testing method comparable to the method used by Allergan. The court also noted that, despite the fact that Revance’s biosimilar has not yet been approved by the FDA or hit the market, the trade secrets described in the complaint are “precisely the type of information that an applicant would typically submit to the FDA about a particular biologic product to obtain biosimilar approval.” As such, the court inferred use of the trade secrets based on access and similarity. Moreover, in finding that Allergan’s claim for misappropriation could go forward, the court determined that Allergan’s warning letter sent to and acknowledged by Revance sufficiently showed that Revance knew or should have known that its new employee had access to Allergan trade secrets and that the employee had a duty of secrecy to Allergan. However, the court found an offer of employment insufficient to show that the acquisition occurred by improper means where the complaint did not allege that Revance did not actually use the trade secrets. To this end, the court did not find it plausible to “infer from this fact alone that Defendant induced [the employee] to breach her duty to maintain secrecy.” 

Finally, the court rejected Revance’s argument that because certain trade secrets could be reverse engineered, they were “readily ascertainable through proper means,” such that they would not be afforded protection. The court noted that “[e]ven if a trade secret could potentially be discovered through reverse engineering but it would be expensive, difficult, time-consuming, impracticable, or for any other reason not a reasonably desirable option, then trade secret protection would still apply.” 

Key Takeaways

  • In assessing whether a party used misappropriated trade secrets to manufacture its products, the relevant inquiry is whether the unique features of that party’s products resemble the trade secrets to which it supposedly had access. Here, where the Botox biosimilar is not yet FDA approved, Allergan’s allegations that the information was the type that would be required in order to develop and obtain FDA approval of a biosimilar were sufficient.
  • Information may only qualify as a trade secret if it is not generally known or readily ascertainable through proper means. The fact that something can be reverse engineered may make it ascertainable, but not necessarily readily ascertainable. 
  • An offer of employment alone does not give rise to an inference that an individual was induced to breach her duty of secrecy. Such an inference would require additional facts, such as allegations that the benefits and perks of the employment offer were contingent in some way on disclosing trade secrets.
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Photo of Alyson Tocicki Alyson Tocicki

Alyson Tocicki is an associate in the Litigation Department and a member of the Trials Practice Group. Alyson handles high-profile and complex litigation matters around the country, with a particular emphasis on product liability, false advertising, and intellectual property disputes.

Alyson has experience…

Alyson Tocicki is an associate in the Litigation Department and a member of the Trials Practice Group. Alyson handles high-profile and complex litigation matters around the country, with a particular emphasis on product liability, false advertising, and intellectual property disputes.

Alyson has experience representing clients at all stages of litigation, including: filing initial pleadings; coordinating discovery; briefing and arguing motions; assisting with key fact and expert witness depositions; writing jury addresses; drafting direct and cross examinations; and preparing witnesses for trial. She regularly represents Fortune 500 companies in the media and entertainment, consumer products, and pharmaceutical industries, as well as professional sports leagues and teams. Alyson leverages her experience to provide creative solutions and to manage her cases with an eye towards trial.

In addition, Alyson devotes significant time to pro bono matters, having been recognized at Proskauer’s 2023 Golden Gavel Awards for her substantial contributions to the Firm’s pro bono efforts. She also serves as a member of the Firm’s Associate Council and was selected to be a Protégée for Proskauer’s Women’s Sponsorship Program, an initiative for high-performing, mid-level lawyers that champions future leaders.

Prior to joining Proskauer, Alyson earned her J.D. from the UCLA School of Law, where she served as a Managing Editor of the UCLA Law Review and President of the Student Bar Association. While in law school, she also earned multiple Masin Family Academic Excellence Awards, advised first-year students on legal research and writing, and worked as a judicial extern for the Honorable Robert N. Kwan in the United States Bankruptcy Court for the Central District of California.

Photo of Baldassare Vinti Baldassare Vinti

Baldassare (“Baldo”) Vinti is the head of Proskauer’s Intellectual Property Litigation Group.

Baldo is a first-chair trial lawyer known for navigating complex, bet-the-company intellectual property disputes across industry verticals and next-generation technologies. With over 25 years of experience, Baldo represents leading global companies…

Baldassare (“Baldo”) Vinti is the head of Proskauer’s Intellectual Property Litigation Group.

Baldo is a first-chair trial lawyer known for navigating complex, bet-the-company intellectual property disputes across industry verticals and next-generation technologies. With over 25 years of experience, Baldo represents leading global companies and universities in patent, trade secret, false advertising, consumer class actions and technology-related breach of contract litigation in federal and state courts as well as before the International Trade Commission.

Baldo is particularly sought after for his courtroom skill and strategic depth, having led trials, arbitrations and appeals in high-stakes disputes involving technologies ranging from pharmaceuticals and medical devices to encryption, digital media, diagnostics, mobile platforms and software. Baldo has represented global corporations, including Arkema S.A., British Telecommunications PLC, Church & Dwight Co., Inc., Henry Schein, Inc., Maidenform Brands Inc., Mitsubishi Electric Corp., Ossur North America Inc., Panasonic Corp., Sony Corp., Welch Foods, Inc. and Zenith Electronics LLC.

With a background in pharmacy, Baldo brings deep domain expertise to pharmaceutical litigation. He has a proven record of driving successful outcomes in complex pharmaceutical milestone payment, royalty and licensing disputes—often stemming from collaboration agreements, co-development deals, and M&A transactions—where the financial and strategic stakes run high.

In addition to representing corporate clients, Baldo works closely with university innovation and technology transfer offices to maximize the financial return of research investments. He develops tailored IP asset optimization strategies and aggressively enforces intellectual property rights to protect and monetize core innovations—whether through high-value licensing agreements, shaping and advancing spin-out company development, or successful litigation.

Baldo also provides strategic counsel on IP due diligence, complex licensing, IP structuring, patentability and freedom-to-operate analyses, and infringement and validity opinions. He advises boards and executive teams on aligning IP strategy with business objectives, mitigating risk and maximizing the value of innovation assets.

A frequent author and commentator on intellectual property topics, Baldo has been quoted in the National Law Journal, Bloomberg BNA, Law360, Westlaw Journal and Inside Counsel magazine. He is also a regular contributor to articles published in Medical Product Outsourcing magazine that deal with the medical device industry.

Baldo served as a judicial intern for Hon. John E. Sprizzo of the United States District Court for the Southern District of New York and for Hon. Charles A. LaTorella of the New York Supreme Court.