David Keyzer serves as a Special Master and as a Technical Advisor assisting federal district court judges with claim construction and other pre-trial proceedings in patent cases.

David earned his undergraduate degree in Mechanical Engineering from Brown University in Providence, Rhode Island. While at Brown, David competed on the Formula SAE race car design team and also studied welding, machining, casting, piston engine design, and turbojet engine design. David earned his law degree at the University of the Pacific, McGeorge School of Law in Sacramento, California, and competed in the Giles Rich Moot Court Competition.

David served as a law clerk to the Honorable David Folsom in the Eastern District of Texas in 2006–2007 and again in 2009–2012. Between his two clerkships, David worked as an associate in patent litigation and patent prosecution at Fish & Richardson P.C.

As a technical advisor, David has assisted with more than 200 claim construction proceedings since 2012. As a special master, David has conducted hearings and has entered reports and recommendations on claim construction proceedings, discovery disputes, motions for summary judgment, Daubert motions, and motions in limine.