Brett Aaron Mangrum

Brett Aaron Mangrum is an Of Counsel attorney at Etheridge Law Group, specializing in patent litigation with over two decades of intellectual property experience. His practice focuses on helping clients develop and monetize patent portfolios, as well as defending the validity of issued patents through trial and appeal. Mangrum possesses deep technical expertise, having worked as an engineer developing advanced nanoelectromechanical systems prior to his legal career.

Mangrum's experience spans both sides of patent disputes, encompassing work for both plaintiffs and defendants. While his one tracked case appearance is on the defendant side, his broader practice includes both patent monetization efforts (often associated with plaintiff representation) and the defense of patent validity, particularly in post-grant proceedings.

He is notably active in inter partes review (IPR) proceedings before the Patent Trials and Appeals Board (PTAB). Mangrum has been ranked nationally as the most active IPR attorney and among the top for achieving successful outcomes for patent owners. Etheridge Law Group is recognized as a leading firm in handling IPRs, having managed over 250 such proceedings, with its attorneys frequently ranking among the most active and best-performing in this area.

Prior to joining Etheridge Law Group, Mangrum cultivated his expertise at a respected national law firm, concentrating on patent prosecution and litigation. He also served as a senior vice president in-house, where he managed the monetization of a substantial patent portfolio, overseeing licensing and litigation matters. He is admitted to practice in Texas.