Jaysen Chung

Jaysen Chung is a partner in the San Francisco office of Gibson, Dunn & Crutcher, focusing on patent and appellate litigation. His practice encompasses a diverse range of technology areas, including pharmaceuticals, biotechnology, DNA sequencing applications, artificial intelligence, virtual networking, RF switch circuits, and semiconductor products and processes. He is noted for his deep understanding of Section 101 patent eligibility issues.

Chung's litigation experience spans all phases from pre-suit due diligence through trial and appeal. While his tracked cases show engagement on both plaintiff and defendant sides, his professional profile highlights significant defense victories. He was part of a trial team that secured a precedent-setting directed verdict of noninfringement in a Western District of Texas litigation involving cloud computing patents. Additionally, he contributed to a multi-billion-dollar patent litigation defense for EMD Serono, Inc. and Pfizer Inc. concerning a multiple sclerosis therapy, which ultimately resulted in the largest defense victory in a patent infringement suit to date after the Supreme Court denied certiorari on a $5.4 billion damages dispute. He also obtained a complete victory at trial in the WSOU litigation and secured a critical victory for Archer Aviation against a preliminary injunction in litigation involving eVTOL aircraft and trade secret misappropriation.

Details regarding Jaysen Chung's experience in PTAB or IPR proceedings are not explicitly detailed in publicly available professional summaries.

Chung earned his J.D. from the University of Southern California Gould School of Law in 2011, following a B.S. in Psychobiology from UCLA in 2007. He is admitted to practice in California, before the U.S. Court of Appeals for the Federal Circuit, the U.S. District Courts for the Northern and Central Districts of California, and the U.S. Patent and Trademark Office. He previously served as a law clerk to the Honorable Randall R. Rader, then-chief judge of the U.S. Court of Appeals for the Federal Circuit.