In 1869, Roller founded the "Stenographisches Institut zur Erteilung von Unterricht und Ausbildung praktischer Stenographen" (stenographic institute for the teaching and instruction of practical stenographers) where he taught Arends' stenography system. After conflicts over his role at this institute, he founded the "Arendsscher Stenographen-Bund" (Arends stenographers' association) and published the "Vollständige Lehrbuch der Volksstenographie (System Arends)" (complete textbook of the peoples' stenography (Arends' system)" which soon proved to be more popular than Arends' own textbook. Arends' responded first with verbal attacks and then sued Roller but he was acquitted of all charges.
