Sydney K. Johnson

Sydney K. Johnson is a trial attorney at Armstrong Teasdale, focusing her practice on complex patent, trademark, and copyright disputes. Her experience spans various technology areas, including telecommunications, biometrics, defense technologies, and agricultural sciences, supported by an undergraduate background in Chemistry. Johnson is experienced in representing both plaintiffs and defendants in patent litigation, with her tracked appearances reflecting engagement on both sides of disputes.

Johnson's litigation experience includes handling cases in federal district and appellate courts, the Patent Trial and Appeal Board (PTAB), and the International Trade Commission. A notable case is her representation of Kubota North America Corporation as a defendant in Kubota North America Corporation et al. v. Vermeer Manufacturing Co., a patent infringement case concerning skid steer machinery that was stayed pending inter partes reviews (IPRs). She has also been a key member of trial teams, successfully defending a corporation against patent and copyright infringement allegations, which resulted in the dismissal of all counts, including a $35 million claim.

Her practice also involves managing disputes before the PTAB, as evidenced by her firm profile and the stay in the Kubota v. Vermeer case for IPR proceedings.

Johnson earned her J.D. from the University of Missouri School of Law in 2020 and a B.A. in Chemistry from the University of Missouri in 2017. She is admitted to practice in Missouri and before the U.S. District Courts for the Western and Eastern Districts of Missouri.