Lauded for its ‘sophisticated understanding of IP law’, Siegler Bird & Bird Ügyvédi Iroda is renowned internationally for its strength in the commercialisation and protection of IP rights. The firm excels in complex cross-border trade mark strategies and disputes, with a strong emphasis on the pharmaceutical, retail, and consumer sectors. The team routinely handles high-stakes patent activity, including compulsory licensing, SPC litigation, and patent nullity cases, demonstrating its significant capabilities in complex IP disputes. The IP practice is led by Bálint Halász, an ’exceptional legal leader’ handling contentious matters, patents, and mandates at the intersection of IT and IP law. Other key members are Ádám Simon for technology and comms IP due diligence and transactions, Patricia Beregszászi in patent litigation and trade secret protection, and Adél Gelencsér in trade mark prosecution and brand management.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Billing & efficiency
Client satisfaction: NPS ®
Testimonials
Collated independently by Legal 500 research team.
- 'Patrícia Beregszászi immediately found a solution with attention, tangible intellectual sophistication, and patience.'
- ‘Among the individuals we have worked with, Patrícia Beregszászi deserves particular recognition. She stands out not only for her deep knowledge of intellectual property matters but also for her professional and approachable manner. Patrícia is consistently prompt and clear in her responses, which gives us great confidence that even complex legal questions will be resolved efficiently.'
- ‘The IP team at Siegler Bird & Bird Ügyvédi Iroda stands out for its exceptional depth of expertise and client-focused approach. The team combines a sophisticated understanding of IP law with a strong commercial awareness, which makes their advice not only legally sound but also highly practical in execution. What sets them apart is their collaborative style, responsiveness, and the ability to adapt complex legal concepts into clear, actionable guidance for clients.'
- ‘Ádám Simon provides quick turnaround, prompt replies which are logical and to-the-point. He has expertise in many fields of law, such as IP and data protection. Patrícia Beregszászi has expertise in many fields of law, such as IP and data protection.’
- ‘What I appreciate about Bird & Bird is that they truly understand business needs and tailor their responses to our requests. They speak confidently and directly, avoiding vague language like "just to be on the safe side", which makes their opinions easy for non-legal executives to grasp. Working with them is straightforward; they quickly understand our requirements and consistently meet deadlines.'
- 'Bálint Halász is an exceptional legal leader whose strategic acumen and profound expertise are simply invaluable. He consistently navigates the most complex challenges with unwavering composure and clarity, providing not just solutions but forward-thinking insights that genuinely advance our objectives. Adél Gelencsér is a highly promising and enthusiastic lawyer. She approaches every task with remarkable diligence and a keen eagerness to learn, quickly grasping new concepts and contributing effectively to the team.’
Key clients
- Vesta Software Group
- Rohlik Group
- Iron Mountain Inc.
- Zone Europe Kft.
- Consorzio Tutela Aceto Balsamico di Modena
Work highlights
Advised Vesta Software Group, one of the operating groups of Constellation Software, Inc. (a company listed on the Toronto Stock Exchange), on the acquisition of Béker-Soft Informatika Kft. from its founders.
Advised Rohlik Group on the full scope of brand portfolio management services and trade mark enforcement in several jurisdictions in which it operates.
Advised the US-based information management services company Iron Mountain Inc. on its acquisition of Wisetek Solutions, the Ireland-based provider of end-to-end IT asset disposition and manufacturing services.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Bálint Halász
Other key lawyers
Ádám Simon; Patrícia Beregszászi; Adél Gelencsér