"U.S. Trial Firm of the Year" – 3 Consecutive Years (Benchmark; Law360)






  • Hon. Karin Immergut, U.S. District Court for the District of Oregon


  • California

Kelsey Dayton focuses on complex commercial litigation, managing all aspects of a case for a wide variety of clients.

During law school, Ms. Dayton served as a comments editor for The University of Chicago Law Review. She was also a volunteer for the ACLU of Kentucky conducting legal research related to COVID-19.

Ms. Dayton was a member of the inaugural class of trial fellows at Hueston Hennigan, where she served on the trial team for two trials and one arbitration.


Obtained a favorable settlement, after two weeks of trial, for the country’s largest integrated health care system in a lawsuit brought by a group of California hospitals seeking hundreds of millions of dollars for emergency medical services provided to its members.

Representing a former Big 4 firm audit partner in SEC proceedings.

Representing Union Pacific as trial counsel in a wrongful death lawsuit.

Representing Public Service Company of New Mexico and PNM Resources Inc. in litigation arising out of the 2022 McBride Fire.

Show More

Representing Sonder Corp., an apartment-hotel company that manages short-term rentals in North America and Europe, in several landlord-tenant disputes across the country.

Represented Amazon.com in a patent infringement dispute concerning cloud computing network and digital rights management.


Comment, “Tangled Arms: Modernizing and Harmonizing the Arm-of-the-State Doctrine,” 86 U. Chi. L. Rev. 1603 (2019).