from the Woodrow Wilson School of Public and International Affairs at Princeton University in 1954 after completing a 130-page long senior thesis titled "The Economic Section, Antitrust Division: Analysis of Purposes and Functions.

He earned a Juris Doctor from Stanford Law School in 1960, and went into private practice in San Diego, California, at the law firm of Gray, Cary, Ames & Frye (now a part of DLA Piper).

He was confirmed by the United States Senate on June 15, 1984, and received commission the same day.

[2][3] Brewster tossed out a February 2006 ruling against Microsoft for patent infringements tied to the licensing of the MP3 format, worth $1.5 billion.

Brewster held a fellowship with the American College of Trial Lawyers, was an associate of the American Board of Trial Advocates and served as president and chancellor: Louis M. Welsh Inn of Court.