Biography
Sydney Johnson is a trial attorney in the firm’s Intellectual Property practice group, focusing on complex patent, trademark and copyright disputes. She represents a wide array of clients, including those involved in the telecommunications, biometrics, defense technologies and agricultural sciences industries.
Sydney manages disputes across federal district and appellate courts, the Patent Trial and Appeal Board and the International Trade Commission. She is integral to every phase of litigation, from pre-suit to discovery to trial. Sydney has been a key member of multiple trial teams in high-stakes jury trials. Her experience extends beyond settlements or judgments, assisting with indemnification, post-trial proceedings and appeals.
Services and Industries
Education
- University of Missouri School of Law (J.D., 2020)
- Business, Entrepreneurship & Tax Law Review (Associate Editor-in-Chief)
- Dean’s List
- Shook Hardy & Bacon Teaching Fellow for Torts
- CALI Excellence for the Future Award for Torts §2
- CALI Excellence for the Future Award for Advocacy & Research §2A
- Eighth Annual University of Missouri Patent Law Moot Court Competition, Co-Champion
- University of Missouri (B.A., 2017)
- Chemistry
- Minor in Spanish
- Multicultural Certificate
- Dean’s List
- Phi Sigma Pi National Honor Fraternity
Background
Prior to joining Armstrong Teasdale full time, Sydney served as a teaching assistant for Patent Law and Policy at the University of Missouri School of Law. In addition, Sydney worked as a summer associate for another St. Louis area law firm, assisting with litigation matters involving pharmaceuticals and toxic torts.
Admissions
Accolades
- Leadership Counsel on Legal Diversity Pathfinder (2025)
