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Peter Bibok
Senior Counsel

Péter Bibók

Languages
  • Hungarian
  • English
Social media

Péter is a senior counsel in the Dispute Resolution team at CMS Budapest, with particular expertise in technology as well as banking and finance disputes. He has more than 15 years’ experience advising domestic and international clients on complex international arbitration, commercial litigation, insolvency proceedings, enforcement matters, and customs disputes.

He has extensive experience in disputes in the technology sector, including software and software implementation disputes, IT contract disputes, and IP-related arbitration and litigation.

He also advises on high-value and strategically significant matters in the banking and financial services sector, including banking litigation, finance disputes, lender liability claims, investment-related disputes, and other contentious regulatory and commercial issues affecting financial institutions.

Péter joined CMS Budapest in 2010 and has built a strong reputation for handling complex, high-stakes disputes. His practice is further enhanced by his earlier experience in CMS Budapest’s Banking & Finance team, where he worked between 2007 and 2011 as a paralegal. This background gives him a strong understanding of the legal and commercial issues underlying banking and finance disputes. He broadened his sector knowledge through a part-time secondment to a major Hungarian investment services company.

He also gained in-house experience during a secondment at a major multinational technology company, where he developed practical insight into compliance, corporate decision-making, internal risk management, and business-focused dispute strategy.

Péter is recognised as a Leading Associate for Dispute Resolution in Hungary by Legal 500 and is ranked Band 3 by Chambers Global.

Awards & Recognitions
01
  • Quote
    Péter Bibók is an all-round excellent and reliable lawyer.
    Chambers Global, 2026
  • Quote
    Péter Bibók is a very experienced litigator, engaged and no situation can surprise him.
    Chambers Global, 2026
  • Quote
    Péter Bibók is extremely flexible and client-friendly, it is very easy to reach him. He always focuses on long-term, complex solutions for clients.
    Chambers Global, 2026

Relevant experience

  • A world leader in producing CRM systems, in a dispute arising out of a complex IT service contract.
  • A Hungarian telecommunication company in intellectual property (IP) court litigation against a software producer.
  • KBC on software related IT litigation.
  • Banca Intesa SanPaolo/CIB Bank Hungary in a case initiated by the state-owned intercity bus company and the Government Control Office against CIB Bank, and two intermediary companies regarding a lease for busses.
  • Ryanair DAC, regarding state interference and a major dispute initiated by Wizz Air against Ryanair as well as managing hundreds of concurrent administrative cases and small claims.
  • Erste Investment, Erste Bank, in investment services litigations and fraud-related claims.
  • MBH Bank, in cross-border litigations handling all of the bank’s foreign cases together with CMS Lyon and Hamburg.
  • Scheidt & Bachmann GmbH, in an ICC arbitration concerning the failure to implement an electronic automated fare ticket system.
  • Veolia on insolvency proceedings, as well as complex disaster management.
  • A multinational wheel manufacturing company in a contractual dispute.

Memberships & Roles

  • Budapest Bar Association (2014)

Education

  • 2010 – Doctor of Law, ELTE University, Budapest
Practice Areas

Insights by Péter

Unauthorised Transactions and Immediate Refunds: Key Takeaways from Advocate General Rantos' Opinion in C-70/25 ECJ Case

20 Mar 2026 6 min read

Hungary to make major changes to legal costs in Hungary: what you need to know

19 Dec 2024 7 min read

Pathological contractual clauses that often lead to disputes

26 Apr 2024

Investor protection? Options after Achmea

08 Dec 2023
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