Having briefed and argued nearly 200 appeals involving a broad range of cases and issues in both state and federal appellate courts, Chas has become a valuable resource to trial lawyers inside and outside of Gust Rosenfeld. He has served as a judge pro tem of the Arizona Court of Appeals and co-founded the State Bar Appellate Practice Section. He regularly shares his knowledge with other lawyers as a faculty member of the State Bar’s Appellate Practice Institute.
In 2009, Chas successfully petitioned the United States Supreme Court to hear the case of United Student Aid Funds, Inc. vs. Espinosa. He was the primary draftsman of the briefs leading to a favorable decision that settled the procedural requirements for the discharge of student loan debt in bankruptcy cases. In 2017, he briefed and argued the case of Howell v. Howell at the high court.
The other focus of Chas’s practice is the resolution of business disputes. He has tried a wide variety of commercial disputes to judges and juries in state and federal courts. His national reputation for the litigation of cases involving franchises, dealers, distributors and licensors is reinforced by his listing in The Best Lawyers of America Franchising Law category. Since 1980, Chas has represented both franchisors and franchisees from various franchise systems, in contract, business tort, intellectual property and government regulation disputes typically encountered by such clients.
Chas brings to his advocacy the perspective of years of experience as a judge pro tem of the Maricopa County Superior court and as a former arbitrator for the American Arbitration Association. As President of the State Bar of Arizona, Chas re-established the Arizona College of Trial Advocacy, where he annually serves as a faculty member.
In 2013, Chas was elected to membership in The American Law Institute, the leading, independent organization in the United States producing scholarly work to clarify, modernize and otherwise improve the law. In recognition of his many contributions to the law and justice in Arizona, Chas was recently inducted into the Maricopa County Bar Association Hall of Fame.
Chas is AV Preeminent rated by Martindale-Hubbell, representing the highest rating in legal ability and ethical standards.
Mesa Judicial Advisory Board (member)
Mesa Rotary Club (former president; recipient 2018 Service Above Self Award)
Mesa United Way (former campaign co-chair)
Arizona Town Hall (delegate)
Litigation Counsel of America.
American Bar Association
House of Delegates, 2010-present
Member, Council of Appellate Lawyers
Member, Forum on Franchising
American Academy of Appellate Lawyers
American Law Institute
Arizona Court of Appeals (judge pro tem, 1984-85, 1992-94, 1998-99)
Maricopa County Superior Court (judge pro tem, 1986-present)
American Arbitration Association (Panel of Arbitrators, 1986-2005)
State Bar of Arizona
Board of Governors, 1995-2006
Executive Council, Appellate Practice Section, 1995-2002
Chair, Trial Practice Section, 2001-2002
Chair, Civil Practice and Procedure Committee, 2006-2007; Member, 1977-2003 and 2006-present
Member, Client Protection Fund Board of Trustees, 2010-present
Chair, Discipline Oversight Committee, 2002-2004
Maricopa County Bar Association (President, 1989-1990)
East Valley Bar Association (President, 1979-1980)
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