Esther Kim Chang

Of Counsel | San Francisco

echang@mofo.com | (415) 268-7562

echang@mofo.com
(415) 268-7562

Esther Kim Chang represents high-technology and life sciences companies in patent and trade secret disputes, specializing in high-stakes, bet‑the‑company litigation. She has experience in a wide variety of matters, including autonomous systems, smartphone technology, mobile device management, semiconductor chips, video compression technology, antibody engineering, and medical devices.

Esther successfully manages complex cases and recently was the lead trial associate for Uber in the high‑profile Waymo v. Uber litigation relating to the future of autonomous vehicles. After four days of trial, the case settled on terms that were very favorable for Uber. She was also a member of the team that successfully tried a high-profile smartphone case leading to a jury verdict of over $1 billion.

Esther is a registered patent attorney and is admitted to practice before the U.S. Patent and Trademark Office (PTO). She earned a bachelor’s degree in chemistry from the Massachusetts Institute of Technology and a master’s degree in chemistry from the University of California, Berkeley. After graduate school, Esther worked at Morgan Stanley Capital International Barra, where she developed financial models and analytics for portfolio risk management. Esther received her J.D. from the George Washington University Law School, where she was elected to the Order of the Coif and was a member of the George Washington Law Review. 

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Experience

  • (Northern District of California). Acted as lead trial associate and represented Uber in a high-profile case involving claims of trade secret misappropriation and patent infringement related to autonomous vehicle technology. Successfully defended Uber against far-reaching preliminary injunction motion and obtained favorable settlement after four days of jury trial.

  • (Northern District of California). Defended Uber in a patent infringement case involving two patents related to two-way location sharing.

  • (Southern District of California). Represented Genentech as plaintiff in a patent infringement case against Eli Lilly involving patent directed to humanized monoclonal antibodies that bind to the IL-17A/F heterodimer.

  • Member of the team that successfully tried a high-profile smartphone case leading to a jury verdict of more than $1 billion.

  • (Connecticut Superior Court).Defended Clearwater against claims of trade secret misappropriation and obtained favorable settlement. Acted as lead associate with case management responsibilities and oversaw technical case.

  • (Northern District of California). Defended AirWatch in a patent infringement case involving four patents relating to mobile device management technology against competitor. Obtained favorable settlement after expert discovery.

  • Represented a multinational corporation in the medical field in high-stakes arbitration with potential damages in the nine figures. After two-week evidentiary hearing, panel ruled in our client’s favor on every patent—an unusually complete victory for one side in the arbitration context.

  • (Eastern District of Texas and Federal Circuit). Represented EchoStar and DISH in a case involving analog and digital television technology. Case settled on favorable terms after plaintiff failed to get evidence excluded with pretrial motions.

  • (Western District of Texas and U.S. Court of Appeals for the Federal Circuit). Secured summary judgment for EchoStar and DISH in a case involving satellite television reception equipment. Affirmed on appeal.

  • (Northern District of California, District of New Jersey). Represented PLR IP Holdings/Polaroid and C&A Marketing in a pair of cases against GoPro, asserting design patent claims and defending against claims of utility patent infringement, copyright infringement, and false advertising. Defeated early motion for judgment on the pleadings in design patent case and secured favorable claim construction in utility patent case. Case resolved in settlement.

  • (Northern District of California). Represented Sling Media in a patent infringement action involving Java hardware acceleration and obtained summary judgment of non‑infringement in favor of client.

  • (Eastern District of Texas). Successfully defended Logitech in a patent case involving data processing and home automation systems. Case settled on favorable terms.

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