Walt is a seasoned trial lawyer and the leader of Orrick's White Collar Criminal Defense practice. His practice focuses on complex business litigation, white collar criminal defense and crisis management.
He represents companies and individuals in connection with criminal and regulatory investigations, parallel civil and administrative litigation and proceedings, and complex business litigation. Over the past 25 years, Walt has been on the front lines of many of the most significant government investigations, prosecutions and litigation. He has extensive experience in cases involving securities fraud, antitrust offenses, the Foreign Corrupt Practices Act, healthcare fraud, trade secret misappropriation and government fraud. Walt also is engaged routinely by public and private companies, and by audit and special committees of boards of directors, to conduct internal investigations.
In 2020, Walt and a team of Orrick lawyers obtained a complete acquittal of their client in a criminal trade secrets case, following a jury trial. In 2017, Benchmark Litigation named Walt one of the top 100 trial lawyers in the United States. Since 2005, Walt has been selected by Chambers USA as one of America’s Leading Lawyers in the area of White-Collar Crime and Government Investigations. The current edition of Chambers USA awards Walt a “Band 1” ranking in California, stating that he is “…firmly positioned at the forefront of the white-collar Bar, regularly utilizing his ‘tremendous experience’ to defend clients in major corporate investigations. Interviewees praise him as a ‘really committed’ attorney who is ‘extremely well versed in all matters regarding white-collar crime and FCPA.’”
Before joining Orrick, Walt served as an Assistant United States Attorney in the Criminal Division of the United States Attorney’s Office for the Central District of California (Los Angeles), where he focused on white collar criminal matters. During that time, he tried 20 felony cases to verdict in United States District Court and handled numerous appeals before the United States Court of Appeals for the Ninth Circuit.
Mr. Brown is Orrick's Partner in Charge, United States. He served on Orrick's Board from 2010 to 2016, and as a member of Orrick's Management Committee from 2013 to 2019.
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