Director Archives

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L. Mark Walker

L. Mark Walker, a director in Crowe & Dunlevy’s Oklahoma City office, focuses his practice in the areas of energy, natural resources and environmental law. His practice includes litigation in both federal and state courts, as well as practicing before…

Evan G.E. Vincent

Evan Vincent specializes in the litigation process. He knows how to use the procedures and rules that govern civil lawsuits to his clients’ advantage, and he has the skills and experience to take a case to trial in front of…

John M. Thompson

John Thompson serves as a shareholder and director for Crowe & Dunlevy in the firm’s Oklahoma City office, and chairs the firm’s Litigation & Trial Practice Group. John has concentrated his practice in the litigation of complex business matters and…

David M. Sullivan

David Sullivan is a registered patent attorney and chair of the firm’s Intellectual Property and Technology group. David’s practice is primarily directed at obtaining and enforcing patent and trademark rights for his clients, who range from Fortune 500 companies to…

Roger A. Stong

Roger A. Stong is an experienced business lawyer, whose practice focuses on corporate, securities and bankruptcy reorganization law. Roger has represented clients in joint ventures, mergers and acquisitions, public and private offerings, securities law compliance and other general corporate and…

Christopher M. Staine

Christopher Staine is a director and the Vice President of Administration in the firm’s Dallas office. He is an experienced litigator that represents individuals and companies in a wide range of commercial disputes in state, federal, and bankruptcy courts throughout…

Donald K. Shandy

Don Shandy is a director in the firm’s Oklahoma City office. Throughout his career, Don’s legal practice has been focused on the environmental and energy areas. Don has worked on projects in 42 states and five foreign countries. He has…

Elizabeth “Libby” Scott

Libby Scott is a director in the firm’s Oklahoma City office and chairs the Administrative & Regulatory Practice Group. She primarily represents healthcare providers in state and federal administrative proceedings as well as all related litigation. Libby is also an…

Stacy A. Schauvliege

Stacy Schauvliege is a director in the Tulsa office of Crowe & Dunlevy and is a member of the Aviation & Commercial Space, Banking & Financial Institutions and Real Estate Practice Groups. Her practice focuses on aircraft purchase and sale…

Melanie Wilson Rughani

Melanie Wilson Rughani, a director in the firm’s Oklahoma City office, serves as the co-chair of both the Appellate and Initiative Petitions Practice Groups. She has successfully represented clients in numerous appeals before the Oklahoma Supreme Court, as well as the…