Dennis P. Riordan is One of the Nation’s Most Influential and Successful Trial and Appellate Litigators

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Professional Overview

Dennis P. Riordan is One of the Nation’s Most Influential and Successful Trial and Appellate Litigators
Dennis P. Riordan is a partner at San Francisco's Riordan & Horgan For the past twenty years, he has consistently been evaluated as one of the best appellate litigators in California and the United States. Mr. Riordan has argued matters of great breadth and significance in both civil and criminal cases, which includes several in the U.S. Supreme Court, and hundreds in state and federal appellate courts around the nation.

Over the years, he has been awarded with several distinctions. In a 2007 article, the New York Times depicted Mr. Riordan as "one of California's top appellate lawyers…known as a brilliant writer of motions, briefs and jury instructions." In May of 2006, the Sacramento Bee described him as "one of the nation's best known lawyers of last resort" in an article regarding his entry into the highly publicized prosecution of Hamid Hayat. The San Diego Union named Mr. Riordan as "one of the state's top appellate lawyers" following his success in overturning a new trial motion on the corruption convictions of former San Diego councilman Michael Zucchet. San Francisco Magazine labeled him as one of the country's top appellate lawyers. In 2003, Mr. Riordan won honors from the San Francisco Chronicle as one of the "Top Ten Lawyers" in the Bay Area, nicknaming him "the Last Hope." He has been included in "The Best Lawyers in America" for the past ten years. In the 2002 edition of his book Persons and Masks of the Law, Judge John Noonan of the Ninth Circuit Court of Appeals cited Mr. Riordan as the single example of an attorney "who could make a difference on behalf of a defendant in a federal criminal appeal."

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