Jochen Abraham Frowein, LLM ’58, one of Germany’s most distinguished experts in public international and constitutional law and a former director of its prominent Max Planck Institute for Comparative Public Law and International Law, died on February 8, 2026. He was 91.
“He was the sharpest black-letter lawyer ever, a great talent scout, and a generous mentor of young jurists,” says Anne Peters, the institute’s current director and an L. Bates Lea Global Professor of Law at Michigan. “His practical and academic work contributed to managing the legal situation of the divided German state and prepared and accompanied the unification in 1989—a lasting legacy.”
Frowein joined the Max Planck Institute (MPIL) as a research fellow in 1962, and then held professorships at two universities in Germany before returning to MPIL to serve as its director from 1981 to 2002. In its online tribute, the institute calls him a “founding father” of the Max Planck Yearbook of United Nations Law—the first scholarly periodical to focus exclusively on the activities of the United Nations in the field of international law—and notes that “the publication remains a cornerstone of the MPIL’s academic output today.”
Frowein’s influence extended far beyond MPIL. From 1973 to 1993, he was a member of the European Commission for Human Rights, including serving for 11 years as its vice president. He also was vice president of the German Research Foundation (Deutsche Forschungsgemeinschaft) and a member of the Advisory Council on International Law within Germany’s Foreign Office. Toward the end of his term as director of the MPIL, Frowein was one of three scholars appointed by the European Union to recommend how EU member states should respond to the establishment of a far-right government in Austria.
“Jochen was a towering figure in public international and comparative constitutional law, especially in the European space,” says Daniel Halberstam, the Eric Stein Collegiate Professor of Law and director of Michigan Law’s European Legal Studies Program. “On a more personal side, Jochen came to Ann Arbor for his LLM in 1957, and it seems his heart never left the Law Quad. Jochen struck up a lifelong friendship with his mentor, Eric Stein, as well as Eric’s wife, Ginny. He also remained an ardent supporter of the Law School and the next generation of scholars, participated regularly in our events in Europe, and hosted a memorable reunion in Heidelberg in 2000.”
He was preceded in death by his wife, Lore, and is survived by his companion, Karin Bausch; son, Georg Frowein, LLM ’94 (Dana Strupova, LLM ’94); daughters Henrike Frowein, LLM ’92 (Daniel Benjamin) and Bettina Frowein (Michael Leppert); and four grandchildren.
