Kenneth Steven Geller (born September 22, 1947) is a former managing partner of the global law firm Mayer Brown LLP. Prior to that, he served as Deputy Solicitor General of the United States and as an Assistant Special Prosecutor in the Watergate Special Prosecution Force. Career After graduating from Harvard Law School, magna cum laude, in 1971, where he served as an editor of the Harvard Law Review, Geller worked as Law Clerk to the Honorable Walter R. Mansfield, United States Court of Appeals for the Second Circuit. Between 1973 and 1975, he served on the federal government's Watergate Special Prosecution Force as an Assistant Special Prosecutor. In that position, Geller participated in criminal investigations, grand jury proceedings, and appeals and took the deposition of President Richard Nixon in San Clemente, California, in February 1975. Geller then joined the Office of the Solicitor General in the United States Department of Justice, serving from 1975 to 1979 as Assistant to the Solicitor General and from 1979 to 1986 as Deputy Solicitor General under Solicitors General Robert Bork, Wade McCree, Rex Lee, and Charles Fried. In 1983, while serving as Deputy Solicitor General, Geller received the Presidential Rank Award for Distinguished Executive Service from President Ronald Reagan. As Deputy Solicitor General, Geller handled the federal government's civil litigation in the Supreme Court and argued numerous cases involving, among other subjects, the civil liability of federal officials, judicial review of administrative action, the Freedom of Information Act and the Federal Tort Claims Act. In 1986, Geller joined the law firm Mayer, Brown & Platt as a partner in its Washington, D.C. office. He became a member of the firm's management committee in 1995, was named Vice Chairman in 2007, and became Managing Partner in 2009. Geller also was Partner-in-Charge of Mayer Brown's Washington DC office between 1995 and 2007. Geller's practice has focused on briefing and arguing cases in the Supreme Court of the United States, federal courts of appeals, and state supreme courts. He has written or edited some 300 Supreme Court briefs and certiorari petitions, argued more than 40 cases before the Supreme Court, and briefed and argued dozens of cases in other state and federal appellate courts. Chambers USA 2007 described Geller as "both incredibly organized and wonderfully clear. He is superb when you need someone to take a highly complex area of law and distill it to its essence."