Sullivan & Cromwell LLP Logo Sullivan & Cromwell LLP Logo
  • Lawyers
  • Practices
  • Insights
  • About
  • Careers
  • Alumni
  • Twitter icon
  • LinkedIn icon
  •  icon
  • Podcasts icon
© 2026 Sullivan & Cromwell LLP
    • Home
    • Lawyers
    • Practices
    • Insights
    • About
    • Careers
    • Alumni
    Home /  About /  News and Events /  Client Highlights
    Client Highlights

    S&C Obtains Dismissal of Biotech Trade Secrets Litigation for Lexeo Therapeutics

    • Our Lawyers
    • Related Practices
    August 13, 2025

    In the middle of Lexeo’s 2023 IPO, gene-therapy competitor Rocket Pharmaceuticals filed a trade secret misappropriation lawsuit against Lexeo in the Southern District of New York. S&C helped Lexeo navigate an expedited internal investigation, allowing for a successful IPO, and then turned to defending Lexeo in the biotech litigation on the merits.  After full discovery, S&C recently obtained a voluntary dismissal with prejudice of all claims, successfully ending this litigation for Lexeo as it proceeds with clinical trials for multiple drug candidates.

    The S&C team was led by Dustin Guzior, Ann-Elizabeth Ostrager and Alexander Gross and included Stephen Elliott, Brittany Bruns, Justin Smallwood, Navraj Dhillon, Nikko Price, Conor Ferrall, Haley Sanders, Emma Burke, Coulson Canty, Sarah Fornshell and Dylan Gaffney. Medhi Ansari, Rachel Yu and Philippe Schiff advised on the settlement agreement. 

    Read More
    Stay Updated

    Subscribe to stay current on S&C Insights.

    Our Lawyers

    Our Lawyers

    Dustin F. Guzior Headshot Photo
    Dustin F. Guzior
    New York
    +1-212-558-4000
    Email
    vCard
    Ann-Elizabeth Ostrager Headshot Photo
    Ann-Elizabeth Ostrager
    New York
    +1-212-558-7357
    Email
    vCard
    Alexander N. Gross Headshot Photo
    Alexander N. Gross
    New York
    +1-212-558-4000
    Email
    vCard
    Stephen J. Elliott Headshot Photo
    Stephen J. Elliott
    New York
    +1-212-558-7446
    Email
    vCard
    Navraj S. Dhillon Headshot Photo
    Navraj S. Dhillon
    Los Angeles
    +1-310-712-6600
    Email
    vCard
    Nikko B. Price Headshot Photo
    Nikko B. Price
    New York
    +1-212-558-4000
    Email
    vCard
    Mehdi Ansari Headshot Photo
    Mehdi Ansari
    New York
    +1-212-558-4314
    Email
    vCard
    RuiHui (Rachel) Yu Headshot Photo
    RuiHui (Rachel) Yu
    New York
    +1-212-558-4000
    Email
    vCard
    Philippe Schiff Headshot Photo
    Philippe Schiff
    New York
    +1-212-558-4000
    Email
    vCard
    Read More

    Related Practices

    • Healthcare & Life Sciences
    • Intellectual Property & Technology Litigation
    • Litigation
    • Trade Secrets
    Sullivan & Cromwell LLP Logo Sullivan & Cromwell LLP Logo
    • Twitter icon
    • LinkedIn icon
    • RSS Feed icon
    • Podcasts icon
    • Contact Us
    • Cookies
    • Privacy & Disclaimers
    • Attorney Advertising
    © 2026 Sullivan & Cromwell LLP