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Circuit Mediators

Catherine C. Geyer is a graduate of the Ohio State University Moritz College of Law and a member of the Ohio Bar. Prior to becoming Chief Circuit Mediator, she was the Supreme Court of Ohio’s Dispute Resolution Section manager, mediating mandamus, workers’ compensation, board of tax appeals, public records and other cases pending before the Court. Prior to that, Cathy practiced law for 20 years, with an emphasis in the areas of insurance coverage and bad faith, construction law, commercial disputes, corporate litigation, and mediation. Cathy served as the ABA Court Alternative Dispute Resolution committee co-chair. She has over 200 hours of mediation training, an advanced negotiation certificate from the University of Notre Dame’s Mendoza College of Business, and is a frequent lecturer, trainer, and author on dispute resolution topics across the country. Cathy serves as an adjunct professor at Moritz's top-rated Dispute Resolution Program. To contact Cathy Geyer, send an email to

Kathryn Wollenburg received her Juris Doctor from Capital University Law School in Columbus where she was a member of Law Review and earned a concentration in Alternative Dispute Resolution.  Prior to joining the Sixth Circuit Mediation Office in 2018, Kate served for 12 years as Mediation Director and Staff Counsel for the General Division Common Pleas Court in Union County, Ohio, mediating over 200 cases annually. In support of her passion for the practice of mediation, she served as an appointed Executive Board Member and Newsletter Editor for the Ohio Mediation Association from 2011-2016. To contact Kathryn Wollenburg, send an email to

Scott Coburn is a graduate of the University of Kentucky College of Law where he was a member of the Moot Court Board.   Following graduation, he served as a Law Clerk to the Hon. Joseph M. Hood, U.S. District Judge for the Eastern District of Kentucky. Scott litigated in Kentucky state and federal courts, with practice emphasis in Real Property, Banking, Business, Construction, and Bankruptcy Law.  He has practiced primarily in civil mediation since 2005. Prior to joining the Sixth Circuit, Scott was a staff appellate mediator with the Kentucky Court of Appeals since 2015.  To contact Scott Coburn, send an email to

John A. Minter is a graduate of The Ohio State University Moritz College of Law, where he received a certification in Alternative Dispute Resolution. John later worked at Moritz as the Langdon Fellow in Dispute Resolution, providing instruction on mediation and other issues in dispute resolution. John mediated within the Ohio court system for seven years working as a foreclosure and general civil mediator for the Cuyahoga County Court of Common Pleas and as the mediator for the Ohio Ninth District Court of Appeals. Prior to working as a court mediator, John was an assistant prosecutor for Marion County, Ohio, and had a private legal practice. To contact John Minter, send an email to