Chajec, Don-Siemion & Żyto Legal Advisors

Primary Interlaw Contact:

Ewa Don-Siemion


In the end, it is all about quality. About commitment to legal excellence, outstanding client service, and the ability to develop forward-thinking legal solutions. CDZ Legal Advisors bring industry expertise, a strategic approach, teamwork and value to the table – and innovate in everything that the firm does, every day.

Main practice areas:

Administrative Law
Arbitration and Dispute Resolution
Bankruptcy, Insolvency and Reorganization
Business, Commercial and Corporate Law
Competition Law
Corporate Governance
Cross-Border Transactions
Employment and Labor
European Union Law
Family Law
Financing Transactions
Land Use and Real Property
Mergers and Acquisitions

Since 2011 CDZ has been a member of Interlaw, an International Association of Independent Law Firms, and a supporting member of the Association of Business Service Leaders (ABSL) and ASPIRE, leading organizations representing the SSC and BPO sectors in Poland.

A multi-disciplinary and international experience enables the firm to provide clients with support on legal matters critical to their business. CDZ customize their services to each transaction’s size and complexity. Their clients include domestic and international companies and range from well-known financial institutions to smaller entrepreneurs and start-up companies. The firm is active in industries such as media, telecommunications, IT, new technologies, as well as financial services, healthcare and infrastructure (including construction and energy).

For many years, CDZ has been recommended by Legal 500 EMEA and Chambers Europe. In 2016 their work has been recognized in eight fields of law: corporate and M&A, employment, TMT, private equity, dispute resolution, banking and finance, restructuring and insolvency, and competition and antitrust. The firms lawyers are also recommended as leaders in their practice areas.

CDZ regularly cooperates with top international law firms on cross-border transactions and projects. The firm prides itself on delivering superior, efficient and business-oriented legal services.The CDZ team is one of ambitious lawyers who have a deep knowledge of legal processes in Poland, EU member states and the United States.

Areas of practice
CDZ is a full service law firm with strong transactional record, well-known for telecoms expertise, active in the media and technology sectors, also visible, and known for equity transactions. It has considerable experience with the shared services sector, which is developing dynamically in Poland. The firm represented many multinational corporations that opened shared services centres in Krakow, Warsaw and Lodz.

Real estate is one of the core areas of the firms activities. It represents Polish and foreign entities, such as investment funds, developers and individual investors. The firm provides advice on all types of real estate transactions, also on those with a risk of reprivatisation claims and other problem issues.

CDZ has a particular knowledge of the telecommunications sector. The firms TMT team has participated in the largest acquisitions and consolidation transactions of telecommunications companies in the Polish market. Their lawyers have years of experience working for TMT companies, vendors offering telecommunications solutions, and regulatory offices.

The firm also specializes in representing clients on corporate issues, M&A transactions (also including transactions between public companies), IPOs and other market transactions.

Office Location

ul. Zajeczna 15
00-351 Warsaw

Tel: (48-22) 492 40 00

Interlaw Contacts

Ewa Don-Siemion

Andrzej Chajec

All Interlaw Firms