Patrick R. Day


With significant trial, administrative, and appellate experience before the Wyoming Supreme Court, and in the Eighth, Ninth, Tenth and District of Columbia Circuit Courts of Appeal, and the United States Supreme Court, natural resource and energy companies engage Mr. Day when faced with high stakes litigation. Clients trust his advocacy skills to achieve positive results when their businesses are on the line.

Mr. Day represents coal producers, oil and gas companies, pipelines, refineries, power plants, and gas plants. He represents energy companies in environmental litigation in state and federal courts around the country as well as before state agencies. His experience includes oil and gas disputes, class actions, ad valorem and severance tax disputes, and Clean Air Act permitting and appeals. Mr. Day also works as an arbitrator and mediator.


2515 Warren Avenue
Suite 450
Cheyenne , Wyoming , 82001-3162
United States

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