Herkner was born in 1981 in Bad Mergentheim. He studied product design at the HfG Offenbach am Main (Offenbach University of Art and Design), already focusing during his studies on designing objects and furniture merging various cultural contexts, combining new technologies with traditional craftsmanship in order to highlight the multifaceted beauty of the materials and draw renewed attention to small details.
Whilst still a student, Herkner did an internship with Stella McCartney in London, which helped to hone his feeling for materials, colours, structures and textures. Since founding his own design studio in Offenbach am Main in 2006, he has designed products for manufacturers such as ClassiCon, Dedon, Fontana Arte, La Chance, Moroso, Pulpo, Rosenthal and Very Wood, as well as working on interior design projects and for exhibitions and museums. Since 2007 he has taught several courses at HfG Offenbach am Main as visiting lecturer. His designs have received multiple prizes, for example the 2011 German Design Award in the Newcomer category, 2015 the EDIDA Award for Best International Newcomer and Guest of Honor at IMM Cologne 2016