Justin Mulligan protects his clients’ intellectual property rights at all stages — from initially securing necessary protections to defending those rights through litigation in courts across the country.

Justin offers individuals and companies of all sizes a comprehensive, detail-oriented approach to various intellectual property and corporate disputes, including trademark, counterfeit, trade secret, copyright, patent and breach of contract matters. In addition to his knowledge and meticulous preparation, clients benefit from Justin’s stellar oral advocacy skills and comfort level in the courtroom. As aggressive as he needs to be to protect his clients’ rights, he never loses sight of his clients’ best business interests, and positions each case for the best possible result.

Although Justin is a litigator, his ultimate goal is to keep his clients out of the courtroom whenever possible, via strategic and proactive IP counseling. Whether he is preparing and prosecuting trademark and copyright registrations, drafting and/or negotiating intellectual property licensing agreements, or ensuring his clients’ trade secrets are contractually protected, Justin builds in client protections from the front end, in order to help achieve prompt resolutions at the outset and avoid the costs of litigation later.

Justin helps his clients understand and navigate the developing technologies that will affect their IP rights and businesses, such as artificial intelligence. But never lets clients lose sight of the most historically common traps and pitfalls that can still befall them—such as not proceeding with federal trademark registration or clearance at the outset. Justin’s own business background helps him to understand his clients’ business objectives, as well as to convey often complex IP concepts in a clear and actionable way.

  • Saint Louis University School of Law, J.D., 2014
    • Lead Notes and Comments Editor, Saint Louis University
    • Salutatorian
  • University of Missouri-Columbia, B.S.

Admissions

Bar Admissions

  • Missouri
  • Illinois

  • Bar Association of Metropolitan Saint Louis, Patent, Trademark and Copyright Section president, 2024

  • Listed in “Best Lawyers: Ones to Watch” for Intellectual Property Law, Litigation – Intellectual Property, and Patent Law in St. Louis, Missouri, 2021-2025 (by BL Rankings)
  • Included in “Missouri & Kansas Super Lawyers” Rising Stars, 2018-2021 (by Thomson Reuters)

I am a natural performer, and even took some acting in college, which serves me well when I’m up there in the courtroom protecting my clients’ rights. When I’m not working, I enjoy going to the gym and staying fit. As a St. Louis native, I also enjoy spending time with family and friends by exploring the ever-expanding food and beverage scene, whether it be by enjoying a glass of cabernet on a restaurant patio or a whiskey-based cocktail at one of my favorite local establishments.