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DUNN PLLC is a multi-practice law firm based in Houston, Texas. We have earned a reputation for professional excellence and dedication to our clients. Our attorneys have the knowledge, experience, and vision to assist clients in finding cost-effective, creative solutions to their business, bankruptcy, and real estate matters. If you have a legal matter, feel free to give us a shout. If we can't help you, we'll be sure to put you in touch with someone who can.

Ryan J. Levan is a complex commercial litigator with deep experience litigating high-stakes matters. He began his career as an associate in the New York office of Gibson, Dunn & Crutcher LLP. To date, Ryan has litigated dozens of cases in federal and state courts for Fortune 500 companies, multinationals, financial services firms, large private corporations, and control personnel. His practice focuses on M&A litigation, securities and commodities investigations, antitrust and securities class actions, and commercial real estate disputes. Ryan also brings valuable business experience to bear in his representations, having previously founded and operated a start-up company—including through the COVID-19...

Patrick Ryan Dunn Sullivan was raised in Belleville, Illinois. He is a graduate of Blessed Sacrament Grade School and Althoff Catholic High School. In 2005, Mr. Sullivan earned degrees from Southeast Missouri State University in Pure Mathematics (B.S.) and Anthropology & Foreign Languages (B.A.). He is proficient in Spanish, French, and Korean. In 2012, he graduated from the Southern Illinois University School of Law.

Mr. Sullivan began his career as an Assistant Public Defender in St. Clair County, Illinois, where he served for 6 years as the office’s first Director of Litigation. During that time he was lead counsel in dozens...