Quinn emanuel trial lawyers

Sohn, Josh

Josh Sohn

Of Counsel


Josh Sohn is Of Counsel in Quinn Emanuel’s Washington, D.C. office.  He focuses his practice on patent, appellate, and general commercial litigation.  He has argued case-dispositive motions in the District of Delaware, Eastern District of Virginia, and Eastern District of Texas, and has also authored briefs before the Supreme Court, Federal Circuit, and Ninth Circuit.  He is the author of five law review publications, which have been cited in federal appellate and district court opinions, Supreme Court briefs, district court briefs, and numerous legal treatises.

  Representative Clients

  • Google
  • Avery Dennison
  • Rovi
  • Motorola
  • Samsung
  • Shell
  • U.S. Chamber of Commerce
  • UPS

  Notable Representations

  • Represented Google in patent litigation brought by I/P Engine, Inc. At trial, Google obtained a finding of laches that eliminated over $400 million in pre-suit damages. On appeal, Google invalidated all asserted patent claims before the Federal Circuit. The Federal Circuit decision was called one of the 10 Most Significant Patent Stories of 2014 by IAM Magazine.
  • Represented Google in patent and breach-of-contract litigation against Personalized User Model, LLP (PUM). Google obtained a favorable trial verdict on all counts, invalidated all asserted patent claims in parallel inter partes re-examination, and won dismissal of PUM’s appeal of the district court’s claim construction.
  • Represented Avery Dennison in antitrust and unfair competition litigation against 3M. Following discovery and dispositive motions practice, the case settled on favorable terms.
  • Represented Rovi in breach-of-contract litigation against Hyundai Digital Technology (HDT). Rovi defeated HDT’s application for temporary restraining order, after which HDT dismissed its lawsuit.
  • Represented Google and the U.S. Chamber of Commerce in merits amicus briefs before the Supreme Court.
  • Represented California state prisoner Ronald Foster in pro bono civil rights litigation in the Ninth Circuit.


  • Harvard Law School
    (J.D., magna cum laude, 2006)
    • National Native American Law Students Association Writing Competition:
      • First Place Prize, 2006

  • Stanford University
    (A.B., Political Science, with Distinction, 2003)
    • Phi Beta Kappa


The State Bar of California; The District of Columbia Bar; The Supreme Court of the United States; United States Court of Appeals: Federal Circuit, Ninth Circuit; United States District Court: Northern District of California, Southern District of California, Eastern District of Texas, District of Colorado

  Prior Associations

  • Law Clerk to the Hon. Jerome Farris:
    • United States Court of Appeals for the Ninth Circuit, 2006-2007

Publications and Lectures

  • “A Defense of the Current Jurisprudence on Section 101,” Law360 (2016)
  • “Specialized Juries for Patent Cases: An Empirical Proposal,” 18 U. Pa. J. Bus. L. 1175 (2016)
  • “Can’t the PTO Get a Little Respect?,” 26 Berkeley Tech. L. J. 1603 (2012)
  • "The Case for Prudential Standing,"39 U. Mem. L. Rev. 727 (2009)
  • "What Can Booker Teach Us About Chevron?," 30 T. Jefferson L. Rev. 197 (2007)
  • "The Double-Edged Sword of Indian Gaming," 42 Tulsa L. Rev. 139 (2006)