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Crowe & Dunlevy, a Professional Corporation

L Mark Walker

Oklahoma City, USA USA Guide 2021 Ranked in 2 departments

Lawyer profile for USA 2021

Chambers Review

Chambers Research is conducted by 200 Research Analysts, across 200 jurisdictions and provides nearly 6,000 rankings tables. Annually we collect hundreds of thousands of responses from clients, the majority via in-depth interview. Learn more about our methodology.

Energy & Natural Resources - Oklahoma

Band 1

Mark Walker is particularly noted for his strength in disputes involving energy and environmental issues, while also acting on a range of industry transactions.
"Mark provided outstanding representation and trusted advice. He is a skilled litigator who works very hard for his clients. I would highly recommend him."
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Environment - Oklahoma

Band 2

Mark Walker is an experienced trial lawyer who regularly acts for clients on big-ticket proceedings before bodies such as the Oklahoma Department of Environmental Quality, drawing on notable strength in both environmental and energy regulation.
"Mark Walker is very knowledgeable regarding water rights and oil and gas law. He has been exceptional to work with in our case. His advice has been been spot on every time and is way ahead of our competition."
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