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Brendan R. Zee-Cheng

Brendan R. Zee-Cheng

Senior Associate

An IP litigator, Brendan understands innovation, and works to protect it over the long term.

Brendan focuses on intellectual property matters pending before trial and appellate courts throughout the United States. Working with individuals, startups and established companies, he handles matters of patent, trademark, copyright and trade secret law regarding:

  • Life sciences
  • Biochemistry
  • Healthcare
  • Telecommunications
  • Software
  • Finance
  • Consumer products

Before establishing his legal practice, Brendan presented his undergraduate biology research at a conference and contributed to leading journal publications stemming from his three summers of research at a top-ranked medical school. He then joined a startup orthobiologics company, manufacturing engineered cartilage grafts for use in a clinical trial, scaling and improving cell culture processes and validating procedures.

Brendan enjoys distilling complex subject matter across technologies into compelling legal arguments. Clients appreciate that Brendan understands the work of inventors, designers and developers, and advocates to protect their discoveries using durable long-term legal strategy.




  • Best Lawyers: Ones to Watch, Intellectual Property Law, Litigation - Intellectual Property, 2022-2024; Patent Law, 2023 and 2024
  • Missouri & Kansas Super Lawyers, Intellectual Property Litigation, Rising Star, 2020-2023
  • Missouri Bar Pro Bono Wall of Fame, 2021


  • J.D., Saint Louis University School of Law
    • Intellectual Property and Business Transactional Law concentrations
    • Saint Louis University Law Journal
  • B.S., Truman State University
    • with honors


  • Missouri
  • U.S. District Court, Eastern District of Missouri
  • U.S. Patent and Trademark Office

Professional Memberships and Certifications

  • Missouri Asian American Bar Association
2023 Pro Bono Contributor
  • Served on legal team that secured summary judgment for one of nation's largest nonprofit hospitals in trademark infringement suit in federal court.
  • As part of larger team, defended international gaming client in copyright infringement lawsuit against competitor in U.S. District Court, District of New Jersey.
  • Assisted in successfully petitioning Trademark Trial and Appeal Board (TTAB) at U.S. Patent and Trademark Office (USPTO) on behalf of feminine hygiene product client to cancel competitor's trademark and sustained its opposition to three other trademark filings filed by same competitor.
  • Served on legal team that successfully opposed trademark application for Fortune 500 multinational consumer products company involving competitor's mark before TTAB.
  • As part of larger team, successfully opposed trademark registration for multinational personal care company regarding competing mark through trial and decision before TTAB.
  • Assisted to successfully resolve trademark lawsuit in favor of large health care conglomerate.
  • Served on legal team that obtained summary judgment and favorable resolution for major manufacturer, regarding six patents in U.S. District Court, Eastern District of Missouri.
Outside the Office

Brendan stays busy as Dad to three small children.

Brendan, his wife and their three kids can often be found at the city’s family attractions: Saint Louis Science Center, Saint Louis Zoo and The Magic House. He also enjoys cycling, running, home improvement projects and, when time allows, the occasional fishing trip.

Community Leadership

Brendan devotes his talents to many worthy causes.

Brendan has remodeled homes in collaboration with Rebuilding Together, a nonprofit that revitalizes homes of veterans, people with disabilities and low-income homeowners. He has also donated his legal skills to pro bono cases. And Brendan has mentored Saint Louis University School of Law students, providing them with on-campus interview training.