Mark joined Clare Locke in 2021. His practice concentrates on defamation litigation and he has considerable experience representing litigants in all phases of high-stakes court battles, including discovery, motions practice, at trial, and on appeal.

Before joining Clare Locke, Mark served as a deputy at a small federal agency. Before that, he spent several years at a large law firm in Washington, D.C., where his practice consisted largely of appeals, litigation involving federal agencies, and all manner of cases involving expression and commercial publication. Judges at every level of the federal judiciary, including the U.S. Supreme Court, have cited and relied on Mark’s legal scholarship.

Mark earned his law degree, magna cum laude, from the University of Minnesota Law School, where he served as a lead editor of the law review. After law school, Mark clerked for Judge Robert Jonker of the U.S. District Court for the Western District of Michigan, Judge John Rogers of the U.S. Court of Appeals for the Sixth Circuit, and Chief Judge Ed Carnes of the U.S. Court of Appeals for the Eleventh Circuit.


  • District of Columbia


University of Minnesota Law School, J.D., magna cum laude, 2012

University of Wisconsin-Madison, B.A., comprehensive honors, 2008