Elizabeth L. DeRieux

EXECUTIVE SUMMARY: Elizabeth L. DeRieux
DATE: 2026-04-30

Elizabeth L. "Betty" DeRieux is a partner and co-founder of Capshaw DeRieux, LLP, in Gladewater, Texas, where her practice includes intellectual property and complex commercial litigation. She has extensive experience in federal court, particularly in the U.S. District Court for the Eastern District of Texas, where she frequently serves as local counsel for plaintiffs in patent infringement cases. Her firm bio notes a broad federal practice that also covers antitrust and employment discrimination, informed by a strong background in appellate law and procedure.

Based on tracked cases and public records, DeRieux's patent litigation work is exclusively on behalf of plaintiffs, often representing patent assertion entities. The single tracked case, Lepton Computing LLC v. Samsung Electronics America Inc et al., reflects this practice. In that matter, filed in April 2026, DeRieux acts as local counsel for Lepton Computing, an LLC asserting patents related to foldable smartphone technology against Samsung's Galaxy Z Fold and Flip products. Public dockets show her involved in a similar capacity for other patent plaintiffs in the Eastern District of Texas.

DeRieux co-founded Capshaw DeRieux in 2008 with S. Calvin Capshaw. Prior to that, she was an attorney at Brown McCarroll, LLP, and the Albritton Law Firm. A significant portion of her early career was spent in federal judicial clerkships; she clerked for the Honorable Robert M. Parker at both the U.S. District Court for the Eastern District of Texas (1991-1994) and the U.S. Court of Appeals for the Fifth Circuit (1994-2001). There is no readily available record of her involvement in IPR or other PTAB proceedings.

DeRieux earned her Doctor of Jurisprudence from the University of Houston College of Law in 1984 and a Bachelor of Arts from Lamar University in 1980. She is admitted to practice in Texas and numerous federal courts, including all Texas district courts and the Fifth Circuit Court of Appeals.