LAWYER PROFILE
Daralyn J Durie

Daralyn J Durie

Global 2026

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Ranked in 2 practice areas

Life Sciences: IP/Patent Litigation

USA

2 years ranked

About

Provided by Morrison Foerster

Global

Practice Areas

Daralyn Durie is one of the nation’s preeminent trial lawyers with significant experience litigating high-stakes disputes on behalf of leading innovators in the technology and life sciences sectors.

Daralyn draws on decades of experience serving as lead counsel in complex matters and securing successful outcomes in major litigation. Her recent notable wins include securing a defense verdict for Aptiv in a hotly contested patent case and scoring three back-to-back wins in the first post-COVID in-person jury trials.

Daralyn acts as go-to trial counsel for both plaintiffs and defendants. She has obtained a plaintiff-side jury verdict of $178 million in a patent infringement case involving melanoma therapy, and she has led the enforcement of Genentech’s Cabilly family of patents, which generated billions of dollars in licensing revenue. Daralyn has also won defense verdicts in major cases involving copyright or trademark infringement claims for Google, Redbubble, and Activision Blizzard.

Chambers Review

Provided by Chambers

Chambers Global Guide

Intellectual Property: Patent - USA

Band 1
Band 1

Individual Editorial
Daralyn Durie maintains a leading practice in pharmaceutical and biosimilar patent litigation. She offers additional expertise in copyright infringement disputes.

Life Sciences: IP/Patent Litigation - USA

Band 2
Band 2

Individual Editorial
Daralyn Durie is frequently called upon by leading life sciences companies to litigate major patent disputes.

Strengths

Provided by Chambers

  • A tremendous trial lawyer - one of the best in the country. Her ability to prepare a case and effectively communicate it in an understandable, compelling, persuasive manner is the best I’ve seen.

    Intellectual Property: PatentChambers Global Guide
  • Daralyn Durie really is a top notch trial lawyer.

    Intellectual Property: PatentChambers Global Guide

Ranked Individuals at Morrison Foerster (91)

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