Mark has argued over 50 appeals, including in ten- and nine-figure matters, and has conducted multiple jury trials and complex litigations.
Described in Chambers USA as “an incredibly talented and gifted” lawyer who is “wonderful strategically” and “truly excels in storytelling and advocacy,” Mark is an elected fellow of the American Academy of Appellate Lawyers and has received numerous commendations from the Anti-Defamation League, the Supreme Court of Thailand, the FBI, the Department of Defense, the ATF, the Daily Journal, Law360, and the Federal Bar Association.
Mark served as a member of the Los Angeles Police Commission’s Advisory Committee on Building Trust and Equity, and the Deputy Chief of Appeals in the Los Angeles U.S. Attorney’s Office. He also serves on the boards of the Association of Business Trial Lawyers and the Friends of the Los Angeles County Law Library.
Mark Yohalem is a litigation partner in the Los Angeles office of Wilson Sonsini Goodrich & Rosati, where he focuses on complex litigation and appeals. Recognized by Chambers USA for his “rare ability to convert brilliant analysis of extremely complex business cases into clear and simply stated briefs and oral arguments,” Mark has argued over 50 appeals in federal and state court, twice before en banc panels of the Ninth Circuit, and has successfully conducted jury trials involving public corruption and other federal offenses.
Before joining Wilson Sonsini, Mark was a litigation partner in the Los Angeles office of Munger Tolles & Olson LLP. He previously served as the Deputy Chief of Appeals at the U.S. Attorney’s Office (USAO) for the Central District of California. As a federal prosecutor, he worked on many of the USAO’s highest-profile matters, including the well-publicized dispute between Apple and the Federal Bureau of Investigation regarding the unlocking of the iPhone belonging to one of the terrorists in the 2015 mass shooting in San Bernardino, California.
In 2024, Mark was elected into the American Academy of Appellate Lawyers. In 2022, he was inducted into the California Academy of Appellate Lawyers. In 2020, he was appointed to the Los Angeles Police Commission’s Advisory Committee on Building Trust and Equity, a group created to develop police reforms in Los Angeles. In 2018, Mark was named one of the Daily Journal’s “Top 40 Under 40.” He has also received commendations from the Anti-Defamation League, the Supreme Court of Thailand, the FBI, the Department of Defense, the Bureau of Alcohol, Tobacco, Firearms and Explosives, Law360, and the Federal Bar Association.
Mark has delivered lectures at the Supreme Court of Thailand and the U.S. Supreme Court, and he has taught appellate advocacy, cyberlaw, and jury selection at the National Advocacy Center, the USC Gould School of Law, the Los Angeles U.S. Attorney’s Office, and American Bar Association conferences. He regularly publishes and speaks about appellate advocacy and recent appellate decisions. Alongside his legal career, Mark is a prolific author. He has written stories for many award-winning computer games and has published dozens of short stories. He also penned two episodes of an animated children’s television show.
Following law school, Mark served as a law clerk for Justice Anthony M. Kennedy of the U.S. Supreme Court and Judge Pamela A. Rymer of the U.S. Court of Appeals for the Ninth Circuit.
Mark Yohalem is a litigation partner in the Los Angeles office of Wilson Sonsini Goodrich & Rosati, where he focuses on complex litigation and appeals. Recognized by Chambers USA for his “rare ability to convert brilliant analysis of extremely complex business cases into clear and simply stated briefs and oral arguments,” Mark has argued over 50 appeals in federal and state court, twice before en banc panels of the Ninth Circuit, and has successfully conducted jury trials involving public corruption and other federal offenses.
Before joining Wilson Sonsini, Mark was a litigation partner in the Los Angeles office of Munger Tolles & Olson LLP. He previously served as the Deputy Chief of Appeals at the U.S. Attorney’s Office (USAO) for the Central District of California. As a federal prosecutor, he worked on many of the USAO’s highest-profile matters, including the well-publicized dispute between Apple and the Federal Bureau of Investigation regarding the unlocking of the iPhone belonging to one of the terrorists in the 2015 mass shooting in San Bernardino, California.
In 2024, Mark was elected into the American Academy of Appellate Lawyers. In 2022, he was inducted into the California Academy of Appellate Lawyers. In 2020, he was appointed to the Los Angeles Police Commission’s Advisory Committee on Building Trust and Equity, a group created to develop police reforms in Los Angeles. In 2018, Mark was named one of the Daily Journal’s “Top 40 Under 40.” He has also received commendations from the Anti-Defamation League, the Supreme Court of Thailand, the FBI, the Department of Defense, the Bureau of Alcohol, Tobacco, Firearms and Explosives, Law360, and the Federal Bar Association.
Mark has delivered lectures at the Supreme Court of Thailand and the U.S. Supreme Court, and he has taught appellate advocacy, cyberlaw, and jury selection at the National Advocacy Center, the USC Gould School of Law, the Los Angeles U.S. Attorney’s Office, and American Bar Association conferences. He regularly publishes and speaks about appellate advocacy and recent appellate decisions. Alongside his legal career, Mark is a prolific author. He has written stories for many award-winning computer games and has published dozens of short stories. He also penned two episodes of an animated children’s television show.
Following law school, Mark served as a law clerk for Justice Anthony M. Kennedy of the U.S. Supreme Court and Judge Pamela A. Rymer of the U.S. Court of Appeals for the Ninth Circuit.
“Legal Advocacy as Interactive Storytelling,” American Bar Association Litigation Section, Winter 2022
“Legal Advocacy as Interactive Storytelling,” American Bar Association Litigation Section, Winter 2022