John "Sean" Jennings

Sean Jennings is a regulatory attorney at Ireland Stapleton. He represents businesses in matters involving regulatory law, government relations, and commercial transactions. Sean works with local and national clients in diverse industry sectors such as food and beverage, cannabis, hemp/CBD, transportation, energy, and gaming. He helps navigate laws in emerging markets such as short-term rentals, fantasy sports, online delivery platforms, and renewable energy. He guides businesses through licensing, permitting, zoning/land use, compliance, government enforcement actions, and investigations.

Sean regularly represents clients before the Colorado Department of Revenue, Department of Regulatory Agencies, Public Utilities Commission, and other state agencies. At the local level, he appears before city councils, planning boards, and other elected bodies. Sean drafts proposed rules and legislation for clients in highly regulated industries. He assists businesses and organizations with rulemaking, policy strategy, and government affairs throughout Colorado.

In his corporate practice, Sean advises clients on transactions, contracts, and intellectual property matters. He enjoys helping businesses leverage and protect their brands with federal trademark registration at the United States Patent and Trademark Office.

Sean has served on rulemaking committees and policy working groups for the State of Colorado and the City of Denver. Previously, he was the hearings manager for the City of Denver’s Department of Excise and Licenses, where he led the City’s administrative hearings process for business licenses. During law school, he was the Executive Editor of the Villanova Law Review.