AMPERSAND Partnerschaft von Rechtsanwälten mbB.
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Recently, the team at AMPERSAND Partnerschaft von Rechtsanwälten mbB. has focused particularly on expanding its client base in the telecoms sphere, while also maintaining a spread across all technology sectors. Hosea Haag and Jonathan Konietz are the key senior contacts; the former is frequently active in international litigation, while the latter regularly handles utility model disputes. Stefan Eck and Olaf Giebe joined the firm in January 2026 from KLAKA.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- 'What's special about the AMPERSAND team is the teamwork, meaning the collaboration between the partners and the associates. The strengths of each individual are clearly utilised. This also applies to collaboration with external patent attorneys.'
- ‘Hosea Haag is extremely knowledgeable and very pragmatic in his approach.’
Key clients
- Arigna Technology Ltd.
- Brushgate Oy