Mark is a litigator companies want on their side when the stakes are high. With over 40 years experience trying cases and settling business disputes, his clients see him as fair-minded but aggressive in bet-the-company cases — always prepared to go to trial, but with an ability to quickly discern the best course of action for their business. His first step with any new matter is to sit down with his client and get a thorough understanding of their needs and tolerances. Only then can they develop a proper legal strategy — whether tackling complex corporate/shareholder disputes or high-profile client disputes or a white collar defense. Because business disputes often take unexpected twists and turns, Mark’s style is to err on the side of more communication, making an effort to explain situations and legal options in clear, concise business terms.

His legal experience is comprehensive, including business and fiduciary litigation, white collar crime and investigations, representing municipalities as well as appealing and advocating for business and individuals at the state and federal levels. His clients have included Procter & Gamble, the Archdiocese of Cincinnati and a variety of large privately-held and public companies, and individuals and institutions serving in fiduciary capabilities.

He pays close attention to the development of the firm’s next generation of litigators. He believes that Dinsmore attorneys need to be “hands-on” early in their careers — gaining trial and appellate experience whenever possible — increasing the firm’s ability to provide a deep and experienced bench well into the future.

Mark teaches legal ethics as an adjunct professor of law at the University of Cincinnati College of Law.  He is also a champion for the less fortunate, having served as trustee and former president of the Legal Aid Society of Greater Cincinnati, the Volunteer Lawyers for the Poor, and the Ohio Justice & Policy Center.  He has also served as board chair and continues to serve on the board of the Center for Closing the Health Gap.