profile picture of Daralyn Durie

Daralyn Durie

Partner | San Francisco


(District of Delaware) Lead counsel for Aptiv in a hotly contested patent lawsuit brought by supplier Microchip Technology, Inc., which sought nearly $85 million in damages involving technology connecting smartphones to a car’s infotainment system. Secured defense verdict of non-infringement following jury trial.

(Northern District of California) Lead counsel for Redbubble defending against copyright and trademark claims brought by Atari, alleging that infringing merchandise was sold on Redbubble. Jury handed Redbubble a complete defense verdict.

(District of Delaware) Represented Genentech in wide-ranging biosimilar litigation over blockbuster breast cancer antibody drug Herceptin. In addition to serving as lead counsel in district court litigation, she obtained a favorable Final Written Decision in an IPR proceeding that upheld the validity of critical patents protecting exclusivity.

(Central District of California) Lead counsel for Genentech in multiple actions enforcing its fundamental Cabilly family of patents relating to methods of making recombinantly engineered antibodies, which generated billions of dollars in licensing revenue

(Southern District of New York) Lead counsel for Google, defending Google Books from copyright infringement claims brought by classes of authors and publishers arising from the scanning of works in major library collections. Following extensive litigation on copyright and antitrust issues, Google prevailed on summary judgment, which resulted in Daralyn being named as an Attorney of the Year in California Lawyer Magazine.

(Cal. Super. Ct.) Obtained jury verdict for California State University over claims brought by class of over 170,000 students challenging fee increases imposed in the wake of the 2009 financial crisis.

2024 Ranked in California for Litigation

IAM Patent 1000