Shannon M. Dacus

Shannon M. Dacus is a principal at The Dacus Firm, P.C. in Tyler, Texas, with a practice focused on patent litigation in the U.S. District Court for the Eastern District of Texas. Her firm represents clients in hundreds of patent cases and has experience serving as both local and lead counsel. The firm's website notes it is a woman-owned business certified by the Women's Enterprise National Council.

Ms. Dacus litigates for both plaintiffs and defendants. The firm's reported results include securing multi-million dollar judgments for patent holders and also obtaining defense verdicts of non-infringement and invalidity for accused infringers. While the provided case list shows a single appearance for a plaintiff, her firm's broader litigation history reflects a balanced practice representing a range of clients from individuals to Fortune 100 companies. Her role in the tracked case, AutoConnect Holdings LLC v. Volkswagen Group of America, Inc. et al., was as local counsel for the plaintiff.

A notable outcome for her firm involved representing plaintiff Genband US LLC as co-counsel in a significant patent dispute over Voice-over-IP (VoIP) technology. In 2016, a jury in the Eastern District of Texas found that competitor Metaswitch Networks infringed seven Genband patents and awarded $8.1 million in damages. The case also involved a subsequent appeal to the Federal Circuit regarding the denial of a permanent injunction. In a separate matter, the firm secured a jury verdict for Genband as a defendant, with the jury finding non-infringement and invalidity of the asserted patents. Searches did not identify any appearances by Ms. Dacus in IPR or other PTAB proceedings.

Ms. Dacus earned her law degree from Baylor University School of Law and was admitted to the Texas bar in 1994.