In 1851 the University of Erlangen-Nuremberg made him an "außerordentlicher Professor" (i.e. professor without chair). From 1854 onwards, he worked there as a full professor ("ordentlicher Professor") for Roman law. In 1857 he took up a similar position at the Charles University in Prague. In Prague, Brinz also became politically active, becoming a member of the Bohemian parliament in 1861 and later taking a seat in the Austrian Reichsrat. In the Bohemian parliament he was a dedicated parliamentary orator and politician and, together with the other leaders of the German party, Johann Friedrich Wilhelm Herbst and Leopold Hasner von Artha, resolutely defended German interests.