Avellum advises on tax aspects of complex transactions and restructurings, including at the international level. The group additionally represents clients in tax disputes, with expertise extending to litigation and pre-trial negotiations. Vadim Medvedev leads the team, covering all aspects of tax. Medvedev has recently been active across the IT, logistics, and retail sectors, among others. Anton Zaderyholova is a specialist in international tax, and is described as ‘very impressive’. Oleksandra Zmazhenko is frequently active alongside Zaderyholova, sharing a focus on international tax.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Good quality team.’

  • ‘Avellum are very good at working cross borders on matters involving Ukraine. They have a very impressive team. They are collaborative and work well as part of a team.’

  • ‘Anton Zaderyholova is very impressive.’

  • ‘Very professional, business minded.’

  • ‘Oleksandra Zmazhenko is very responsive, she is young but already a lot of experience, very diligent. Vadim Medvedev is very experienced, he functions very well under stress. Very committed.’

  • ‘Avellum's tax practice is distinguished by its comprehensive, client-focused approach and deep understanding of complex tax regulations in Ukraine and international tax matters. Compared to other firms, Avellum stands out for its strategic foresight in anticipating changes in the global tax environment.’

  • ‘Anton Zaderyholova has deep expertise in tax law, consistently delivering practical, client-focused solutions. His deep understanding of both Ukrainian and international tax systems sets him apart, enabling him to navigate complex cross-border issues with ease.'

Key clients

  • DMarket Inc.
  • Investment Capital Ukraine (ICU)
  • The Ministry of Finance of Ukraine

Work highlights

  • Acted as the legal counsel to DMarket and its shareholders in connection with its acquisition by Mythical Games.

Lawyers

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head

The lawyer(s) leading their teams.

Vadim Medvedev

Other key lawyers

Anton Zaderyholova, Oleksandra Zmazhenko