Seth Herring

Seth Herring is a patent litigation attorney with a focus on complex intellectual property disputes across various technology sectors. As of May 2026, Mr. Herring is a Partner in the San Francisco office of Kilpatrick Townsend & Stockton LLP, having previously been a Partner at Reed Smith LLP. His practice encompasses a wide range of technologies, including computer software and hardware, wireless and wired networks, semiconductors, cybersecurity, and medical devices. He is an accomplished trial lawyer who also handles trademark, trade dress, and copyright litigation.

Throughout his career, Mr. Herring has represented both plaintiffs and defendants in patent infringement suits, with a significant track record in defending technology companies. Notably, he represented Keysight Technologies, Inc. as a defendant in the multi-forum patent infringement dispute, Centripetal Networks, Inc. v. Keysight Technologies, Inc. et al.. This extensive litigation involved proceedings in the Eastern District of Virginia, the ITC, the Unified Patent Court (UPC), and German national courts, as well as multiple inter partes reviews (IPRs) before the USPTO. Recent victories for Keysight include Federal Circuit affirmances of ITC decisions finding no Section 337 violation and PTAB decisions finding numerous patent claims unpatentable. Other prominent defense work includes representing Box, Inc. in Open Text v. Box, a $270 million patent infringement suit where he prevailed on a motion to strike the plaintiff's damages expert, and serving as trial counsel for Netgear in Fujitsu Ltd. v. Netgear, securing a verdict of patent invalidity, non-infringement, and no willfulness after a three-week jury trial. He also represented Mizuho OSI as a plaintiff in multiple patent infringement suits, achieving a jury award after a two-week trial.

Mr. Herring is admitted to practice in California. He earned his Juris Doctor from the University of California, Hastings College of the Law in 2007, and holds a Bachelor of Arts in Chemistry and Philosophy from Brandeis University, which he received in 2003.