Simon Sonnenberg
- 2005: Admission to the bar & foundation of Sonnenberg Law Office
- Since 2018: voluntary legal advice for AWO and Diakonie Düsseldorf in the field of aliens law
- Main areas of practice: Foreigners law, labor law, corporate law, commercial law
Ye Cheng
- 2015: Admission to the bar and affiliation with Sonnenberg Law Office
- Main practice areas: intellectual property law, competition law, e-commerce, immigration law
Fanfei Ji
- 2014: Admission to the bar in China
- 2021: Member of the Düsseldorf Bar as a foreign lawyer
- Main areas of practice: Corporate law, IP law, immigration law
