Before joining Merck KGaA, Thaddeus served in senior positions at the U.S. Department of Commerce and the White House Office of the U.S. Trade Representative. In addition to government service, he worked for 12 years in various legal and policy roles at General Electric in Washington, Brussels and Geneva; in the appellate litigation practice at Jones Day in Washington; and, in the Brussels European law and policy practice of Akin Gump. He clerked for Judge Karen Williams on the U.S. Court of Appeals for the Fourth Circuit.

Thaddeus also served as a member of the National Academy of Sciences Committee charged with preparing a report on the science and technology capabilities of the U.S. Department of State. And has testified as an expert before committees of the U.S. Congress and the French Senate.

Thaddeus holds a bachelor’s degree from Oberlin College and a law degree from Catholic University of America Law School where he served on law review.