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Research

The research interests of the holder of this chair involve constitutional procedural law (legal protection by the German Federal Constitutional Court), general administrative law, state liability law (especially the liability of the state for unlawful conduct), and the law of trades, which is a practice-relevant subfield of special administrative law.

The results of the research activities are included in various standard commentaries and textbooks of the holder of this chair. They are kept up to date with continual new editions. These are first and foremost the Allgemeine Verwaltungsrecht und Verwaltungsprozessrecht [General Administrative Law and Administrative Procedural Law] (16th edition 2018) and Öffentliches Recht [Public Law] (11th edition 2018), which are both among the leading textbooks and for which the chair holder is the sole author. This also includes co-authorship of the Standardkommentar zum Grundgesetz [Standard Commentary on the German Basic Law] (8th edition 2018) edited by Michael Sachs, and Standardkommentar zum Handwerksrecht in Alleinautorenschaft [Standard Commentary on the Law of Crafts and Trades in Sole Authorship] (4th edition 2008).

Recently completed and ongoing dissertation and habilitation projects deal with parliamentary law, the constitutional principle of the federal state, and the territorial existence of the Federal Republic of Germany, public debt law, the significance of the free democratic basic order for the disputed question of the existence of a constitutional basic anti-National Socialist principle as a barrier to freedom of expression, the relationship between official church-internal law and state jurisdiction, and the political activity of underage students in schools.