Josef Hartl received his Master in Biochemistry from the University of Regensburg and is currently finishing this PhD at the University of Halle. He is also located in the group of Patrick Garidel at the Early Stage Development department of Boehinger Ingelheim in Biberach. His professional interests focus on Protein-Protein Interaction at high protein concentration, and the prediction of viscosity of different high concentration formulations. His current projects include the development of technics for characterization of weak protein-protein self-interactions and the determination of protein characterisitics e.g. the solution conformations, protein hydration and dipol-dipol interaction.