Zachariah B. Summers

Zachariah B. Summers is a patent litigator and partner in Quinn Emanuel Urquhart & Sullivan's Los Angeles office, having previously been stationed in their New York office. His practice demonstrates a broad technical scope, encompassing life sciences (e.g., CRISPR-Cas9 gene-editing technology, biosimilar disputes for clients like Samsung Bioepis and Halozyme Therapeutics, Inc., as seen in cases such as Regeneron Pharmaceuticals, Inc. v. Samsung Bioepis Co., Ltd. and matters involving Merck and Halozyme), as well as various technology and electronics sectors (e.g., semiconductors for Qualcomm and MediaTek, smartphone and wireless technologies for Samsung and Motorola, and LED technology for Cree and Everlight).

Summers exhibits a versatile practice, representing both plaintiffs and defendants in patent disputes. While tracked appearances show a slight lean towards plaintiff-side work (6 plaintiff, 2 defendant), his firm profile highlights significant defense successes for major technology companies. He has successfully defended clients such as VIZIO against patent infringement claims, securing a summary judgment victory and a successful appeal, and Samsung against Apple in a follow-up patent infringement trial and appeal. His notable representations also include securing terminating sanctions for LED manufacturer Cree at the International Trade Commission (ITC) and invalidating asserted claims for Everlight in a jury trial involving semiconductor patents.

He possesses substantial experience in Patent Trial and Appeal Board (PTAB) proceedings. Summers has been prominently involved in CRISPR-Cas9 patent interference proceedings for the Broad Institute, successfully defending foundational patents and securing Federal Circuit affirmance of PTAB decisions, for which he was named "Litigator of the Week" by The American Lawyer Litigation Daily. Furthermore, he is designated as a provisionally recognized PTAB attorney in numerous ongoing Post-Grant Review (PGR) and Inter Partes Review (IPR) proceedings, including multiple IPRs and PGRs related to Merck Sharp & Dohme LLC v. Halozyme Inc..

Summers earned his J.D. from Yale Law School in 2007 and his B.A., summa cum laude, from Illinois Wesleyan University in 2003. He is admitted to practice in the State Bars of California and New York.