William K. Elias is a founding Partner of Elias Books. Bill has more than 40 years of experience practicing primarily in the areas of property taxation and state and local property tax litigation, oil and gas litigation, and commercial litigation. He has successfully represented clients before administrative boards and tribunals, federal and state trial courts, and federal and state appellate courts, including the Oklahoma Supreme Court and Oklahoma Court of Civil Appeals.

Bill is active in national and state legal organizations. Through Bill's leadership, the firm became the Oklahoma member of the American Property Tax Counsel (APTC), a national association of preeminent law firms practicing in property taxation. Bill has been a guest lecturer on oil and gas and property tax related matters at numerous seminars sponsored by the Oklahoma Bar Association, the Oklahoma Association of Tax Representatives (OATR), and the Institute for Professionals in Taxation (IPT). Bill is a past recipient of the Distinguished Service Award from the Oklahoma Mid-Continent Oil & Gas Association for outstanding service to the petroleum industry.

Bill received his Bachelor of Arts in Political Science from Oklahoma State University in 1977 and his Juris Doctor with honors from the University of Tulsa in 1981.