GESSEL Attorneys at Law

Testimonials

Collated independently by Legal 500 research team.

• The individuals I work with stand out for their exceptional competence, extensive experience, and unwavering professionalism. They combine deep technical knowledge with a strong understanding of the commercial realities of our business, which allows them to deliver advice that is both precise and practical. What truly differentiates them from competitors is their reliability, integrity, and long-term commitment to the client’s interests. They approach every matter with thoroughness and dedication, ensuring the highest standard of work while maintaining complete transparency and trust. I particularly value their loyalty and consistency — qualities that create a genuine sense of partnership and confidence in every project we undertake together. Their responsiveness, strategic thinking, and proactive attitude make collaboration both efficient and enjoyable.
• What makes this practice truly unique is its combination of deep sector expertise, proactive client service, and a highly collaborative approach. The team distinguishes itself through a strong understanding of both the commercial context and the legal or technical aspects of each matter, ensuring that advice is not only accurate but also strategically aligned with business goals. Potential clients would appreciate the team’s responsiveness, practical mindset, and ability to anticipate challenges before they arise. Their commitment to high-quality work, clear communication, and consistent reliability creates real confidence and trust in the relationship. Compared to other firms, this team stands out for its efficiency, accessibility, and the genuine partnership it builds with clients. They do not simply deliver advice—they help drive projects forward in a constructive and solution-oriented way. Overall, I am very satisfied with the level of service and the team’s professional and substantive expertise.
• I have had the privilege of working with Prof. Dr. Beata Gessel-Kalinowska vel Kalisz, Ms. Barbara Tomczyk, and Ms. Anna Ziewalicz on arbitration and corporate dispute matters. Prof. Dr. Gessel’s international reputation, intellectual depth, and strategic foresight set the highest professional standard. Her ability to anticipate procedural and substantive challenges ensures exceptional case management and client confidence. Her leadership sets a benchmark for professionalism and integrity. Anna is an exceptional and highly professional lawyer who demonstrates remarkable expertise in managing complex arbitration and corporate dispute matters. Anna distinguishes herself through her analytical precision and clarity of communication. She consistently delivers well-reasoned feedback and demonstrates remarkable thoroughness in researching foreign legal systems and assessing their potential impact on the client’s case. She combines sharp legal reasoning with strategic foresight and provides clients with clear, confident guidance at every stage of a dispute. In the enforcement proceedings of an AAA arbitral award (USA), Anna achieved an impressive outcome—successfully obtaining a freezing order to secure assets for execution and subsequently negotiating a highly favorable settlement. Her analytical depth, mastery of procedural detail, and composed handling of cross-border complexities are outstanding. Anna’s work reflects precision, determination, and genuine commitment to protecting her clients’ interests, making her one of the most capable and trusted practitioners in the field of international arbitration and enforcement. Barbara combines outstanding diligence with a strong grasp of commercial realities, providing precise and practical solutions under pressure. Barbara is a highly diligent and commercially astute lawyer who consistently delivers precise, practical solutions in demanding situations. She combines strong analytical skills with sound business judgment, ensuring that legal strategy aligns with clients’ commercial objectives. Barbara manages complex disputes efficiently and with unwavering professionalism. Gessel's professionalism, legal expertise, and collaborative approach distinguish them from competitors, and their dedication to quality and integrity make them an invaluable team to work with in complex arbitration and cross-border corporate disputes.
• As a legal academic and practitioner with extensive experience in arbitration and corporate disputes, I have had the privilege of collaborating with GESSEL on several high-profile matters. The firm exemplifies professionalism, integrity, and precision in every aspect of its work. Its arbitration and corporate dispute teams provide accurate, well-reasoned, and strategically sound legal advice, combining deep doctrinal expertise with commercial practicality. I have worked with GESSEL in the context of arbitration and complex corporate disputes and have always been impressed by their professionalism, accuracy, and the consistently high quality of their legal advice. The team combines strong analytical skills with sound judgment and a deep understanding of both Polish and international business law. Their approach is thorough, strategic, and always focused on achieving practical and effective outcomes for the client. Communication is clear, timely, and solution-oriented, and their partners remain closely involved throughout every stage of the process. GESSEL’s arbitration practice, in particular, stands out for its procedural expertise and ability to handle high-value, multi-jurisdictional disputes with confidence and precision. In my professional experience, they are among the most competent and reliable firms in the region—an excellent partner for arbitration and corporate dispute resolution matters. I highly recommend this team, and potential clients would greatly benefit from using their services. They do not disillusion their clients; they always provide clear feedback and are very thorough about the law and legal procedure. They are meticulous in checking the law of other jurisdictions and how this may impact their client's case.
• Anna Ziewalicz is the lawyer you want in critical moments. Calm, decisive, and highly effective – she turned a prolonged corporate conflict into a clear success, securing the shareholder exit and protecting the company’s interests. Leszek Koziorowski complements the team with his deep corporate and capital markets expertise, ensuring shareholder meetings run smoothly and efficiently.
• ‘Firstly, extensive experience and competence in handling my case. Secondly, commitment and insight. Thirdly, excellent communication. I feel that the case is being handled properly, which gives me peace of mind.'

Key clients

• AMI AGRO s.c. Irena Aksamska, Marek Aksamski, Krystian Aksamski, Ewa Głazik
• BNP Paribas Bank Polska S.A.
• Client Earth Foundation

Work highlights

Lawyers

Hall of Fame

The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Beata Gessel-Kalinowska vel Kalisz

Leading partners

The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Piotr Schramm