Tessa Duxbury

Tessa Duxbury is an Associate in the Century City (Los Angeles) office of DLA Piper, where her practice focuses on patent litigation and intellectual property disputes. Her experience appears to center on defending technology companies, evidenced by her appearances on the defendant side in all tracked cases.

Duxbury's litigation experience includes representing Microsoft Corporation as counsel in the ongoing patent infringement case, Qomplx LLC v. Microsoft Corporation, in the Western District of Texas. This case involves patents related to software and cybersecurity, specifically concerning telemetry for cloud-based services, distributed computational graphs, risk-based authentication technology, and multi-factor authentication (MFA). While the district court litigation proceeds with a Markman Hearing scheduled for June 2026 and a jury trial for June 2027, Microsoft has also filed related inter partes review (IPR) petitions against Qomplx LLC patents at the PTAB.

Prior to joining DLA Piper, Ms. Duxbury gained experience as an Intellectual Property Intern at an IP boutique in the Bay Area. She is admitted to practice in California. Ms. Duxbury earned her J.D., summa cum laude, from Santa Clara University School of Law, and a B.A. from California State University at Fullerton.