
Oppenheim Ugyvedi Iroda offers a long-established data, technology, and AI practice distinguished by a strong regulatory, contentious, and litigation background. The firm combines deep GDPR compliance expertise, including CEE-wide projects and DPO services, with advisory work on complex regulatory proceedings. It is highly active across the automotive, tech, and financial services sectors, routinely advising on sophisticated issues, such as data transfer structuring, whistleblowing compliance, and the data protection aspects of AI systems and the AI Act. The team is led by Ivan Bartal, an expert in IP and IT transactions, e-commerce, and AI governance.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Sector knowledge
Key clients
- Scania
- Inditex SA
- Ferrero
- Samsung
- Skanska
- LKH Leoni
- HELL Energy
- Vodafone Shared Services
- Bank Gutmann
- Volvo
- INDITEX SA
- 4ig
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Ivan Bartal
Other key lawyers
Krisztian Szilagyi
