- Studies at Ludwig-Maximilians University Munich
- LL.M. studies at Northwestern University School of Law, Chicago, USA
- 1990 – 2005 Haarmann, Hemmelrath & Partner
- 2006-2018 Partner with ARQIS Rechtsanwälte (Founding Partner)
- Since 2018 Of Counsel with ARQIS Rechtsanwälte
- Respected ranking publications and business magazines regularly name Andreas Dietl as one of the highly recommended lawyers for M&A and corporate law. These inculde JUVE Handbook, Best Lawyers (Handelsblatt), Legal500 and WirtschaftsWoche. In these publications clients and competitors, inter alia, praise his “excellent experience and negotiation conduct”.