Office Hours Here you can find all office hours of our chair. Please note that you have to register by Email. E-Mail Office hours Prof. Dr. Burkhard Hehenkamp wipo(at)wiwi.upb(dot)de Monday, 2:30 to 3:30 p.m. Angelika Endres-Fröhlich angelika.endres(at)upb(dot)de maternity/parental leave until October 2023 Amirhossein Kiannik amirhossein.kiannik(at)upb(dot)de Tuesday, 3 to 4 p.m. Tahmina Faizi tahmina.faizi(at)upb(dot)de Monday, 2 to 3 p.m. Alexander Koch alexander.koch(at)upb(dot)de Tuesday, 11 to 12 a.m. Please note that there may be changes on short-notice. Further information : Office HoursRange of courses - overviewRange of courses - DetailThesesRange of topicsInformation on scientific working Please note that you have to register by Email.