Following from this, he appeared in several further television productions accompanied by works at the recording studio. From 2006 to 2010 Mölleken attended the acting school Juniorhouse in Cologne. 2007 Producer Wolfgang Rademann took Patrick Mölleken to the German Das Traumschiff and talk-host Harald Schmidt invited him as guest to his Die Harald Schmidt Show. As a dubber he participated together with Mario Adorf in the very same year in the 26-episode animated series Kleiner Dodo by lending his voice to the ape Pong.

His biggest TV-part up to that point was his role in the 2008 crime movie Pfarrer Braun – Heiliger Birnbaum, aside to Ottfried Fischer. After that Mölleken played opposite Ludwig Trepte in the TV-drama Ihr könnt euch niemals sicher sein, which was awarded among others with the Austrian television award Romy and the Grimme-Preis in 2009.

2010 he was elected by the German youth magazine Bravo in their campaign Mission Famous as "Sinalco-Boy" and became part of the jury.

Since 2011 Mölleken has been more often seen in war productions, like in Jewish Alley, which was reviewed by Steven Spielberg, in Rommel as the Desert Fox (Ulrich Tukur)’s son, in Zersplitterte Nacht, as well as in A Good Story under the guidance of Cinematographer Christopher Doyle.

Subsequent to his graduation from high school by doing his Abitur (Higher School Certificate) Patrick Mölleken embodied the role of the deathly cold spree killer KILIAN. in the 2012 same-titled movie.