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Quinn Emanuel Urquhart & Sullivan Welcomes New Partner Class

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Quinn Emanuel Urquhart & Sullivan, LLP Welcomes New Partner Class

Global litigation firm elects partnership class of seven, drawing from a range of practice areas.

LOS ANGELES – Quinn Emanuel Urquhart & Sullivan, LLP, the global litigation powerhouse, has elected seven lawyers to join its partnership ranks, founder and Chairman John B. Quinn announced today. The new partners represent a wide array of practice areas and come from international as well as domestic offices, he noted.

“Our litigation practice is flourishing across diverse economic sectors. From crypto to IP, clients continue to demand our services for their high-stakes disputes. Our impressive new partner class reflects that,” Quinn said. “This year’s class also reflects our ability to attract and retain top-tier young legal talent.”

The elections took place at Quinn Emanuel’s annual partnership meeting on December 10 and take effect on January 1, 2023. The newly elected partners are as follows:


Jesse Bernstein is based in Quinn Emanuel’s New York office.  He joined the firm in 2015.  His practice focuses on complex commercial litigation, with an emphasis on securities fraud and corporate governance actions. He has represented plaintiffs and defendants in class actions and in individual actions involving the Securities Act of 1933, the Securities Exchange Act of 1934, and state blue sky laws. On the plaintiffs’ side, for example, he represents some of the world’s largest institutional investors in securities opt-out actions alleging violations of state and federal securities laws. On the defense side, he currently represents one of the world’s largest drug companies in a securities class action stemming from an alleged price-fixing conspiracy. He graduated from Harvard Law School in 2015.


Marina Boterashvili is based in the firm’s London office, having joined Quinn Emanuel in 2015.  Prior to joining the firm, she trained at a large international law firm, spending six months in Moscow. After graduating with a degree in Law from the London School of Economics in 2010, Marina went on to obtain an LLM with Distinction from University College London in 2011, with a focus on public international law and dispute resolution. Marina specializes in complex international litigation and arbitration, with an emphasis on civil fraud, asset tracing, and joint venture and shareholder disputes. Her arbitration experience includes acting on arbitrations under the UNCITRAL, ICSID, SCC, LCIA and ICC Rules.


Emily Kapur is based in the firm’s Silicon Valley Office. She focuses on complex commercial litigation, particularly cryptocurrency and finance cases featuring the operation of traditional and nascent trading markets. In the cryptocurrency area, she has defended numerous securities litigation matters filed against crypto companies, litigated commercial disputes among cryptocurrency-focused companies in court and arbitration, and advised numerous crypto projects considering securities liability issues. An experienced trial lawyer, she has represented plaintiffs and defendants in state and federal litigation in California, New York, and Delaware, and in numerous arbitration hearings. Emily holds a Ph.D. in Economics and served as an expert witness for high-profile litigation matters prior to joining Quinn Emanuel. Her Ph.D. and law degree are from Stanford.  

Owen Roberts is based in the firm’s New York office.  He focuses on federal and state appeals, case-dispositive briefing in trial-level matters, and mid-trial submissions. He regularly practices in federal and state court in both New York and California, where he was previously a member of Quinn Emanuel’s Los Angeles office.  He graduated magna cum laude from Harvard Law School, where he was the Coordinating & Outreach Chair of the Harvard Law Review, in 2014. Prior to joining the firm in 2017, he clerked for the Honorable Chief Justice Dana Fabe of the Supreme Court of Alaska and the Honorable Judge Katherine Forrest of the United States District Court for the Southern District of New York. 

William R. Sears is based in the firm’s Los Angeles office.  He re-joined the firm in 2017 following a clerkship for the Honorable Cynthia M. Rufe in the Eastern District of Pennsylvania, and previously worked in the firm’s New York office.  His practice focuses on antitrust, competition, and class-action litigation.  He has represented both plaintiffs and defendants at every stage of litigation and has tried cases in both federal and state court.  Prior to joining the firm, he graduated from Columbia Law School, where he won the Greenbaum prize for best oralist in the school’s Harlan Fiske Stone moot court competition and served as the Senior Executive Editor of the Columbia Journal of Environmental Law.

Margaret Shyr is based in the firm’s Silicon Valley office, having joined the firm in 2014.  She obtained a B.S. in Chemical Engineering from M.I.T. in 2003, a Ph.D. in Materials Science and Engineering from the University of Illinois at Urbana-Champaign in 2009, and a J.D. from Northwestern University School of Law in 2014.  Margaret is registered to practice before the United States Patent and Trademark Office.  Before attending law school, she prosecuted patent applications before the U.S.P.T.O. as a patent agent. 

Zach Summers is based in the firm’s Los Angeles office. He re-joined the firm in 2018. He focuses on technology-related litigation, with an emphasis on complex patent trials. Zach has represented clients such as the Broad Institute, VIZIO, Samsung, Google, Motorola, Cree, and Everlight Electronics at trial and in the ITC. Zach was named a “Litigator of the Week” by The American Lawyer’s Litigation Daily for his work for the Broad Institute on CRISPR-Cas9. He graduated from Yale Law School in 2007.