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Testimonials
Collated independently by Legal 500 research team.
‘Agile team that not only has legal knowledge but also a strong sector and business understanding, which is critical to provide truly useful advice. Moreover, the team is always available and communications are very fluid. In general, an excellent option due to their expertise, availability and commitment.'
‘Filip Mroczowski, as the team leader, is always committed to providing useful advice. This is advice that really adds value to our business and operations. He always finds out the way to do what is needed but with very low risk. Additionally, apart from English, he speaks perfect Spanish, something I do appreciate very much.'
‘Olesinski & Wspolnicy correctly identifies the specialist scope of the issues and correctly assigns tasks to the appropriate specialists, which allows the client to obtain the expected and effective outcome of O&W’s work.’
‘Maciej Król has vast experience in conducting construction investments and the ability to transfer this to current issues, excellent communication skills and a positive attitude towards co-workers, and excellent availability.'
‘A large team of lawyers specialising in various fields, which ensures comprehensive legal services at a high level.’
‘Filip Mroczkowski has great knowledge and a very professional attitude.’
‘Olesinski & Wspolnicy has always delivered high-quality legal services. The office is capable of delivering complex legal services for complex projects.’
Key clients
- Umicore Battery Materials Poland Sp. z o. o. [LCC]
- Umicore N.V. [LCC]
- Viessmann Technika Grzewcza Sp. z o. o. [LCC]
- IONWAY Poland Sp. z o. o. [LCC]
- IONWAY B.V. [LCC]
- Whirlpool Company Sp. z o. o. [LCC]
- Atlas Ward Polska sp. z o.o. [LCC]
- Volkswagen Group Polska Sp. z o. o.
- ELEMONT S.A. [INC]
- Econstruction Sp. z o. o.
Work highlights
- Advising Atlas Ward Polska on the construction of a mega logistics and warehouse center in Slovakia.
- Acting for Viessmann in a dispute pertaining to its mega-plant construction in Poland.
- Acting for IONWAY, a joint venture between Volkswagen and Umicore N.V. in relation to the construction of a power plant.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Filip Mroczkowski; Maciej Król; Olga Płoucha