SION Tax Law Firm Наталя Рязанова

Nataliia Riazanova

managing partner, patent attorney, PhD in law

International SION Patent Law firm has been working in the field of consulting, patent, tax and legal services since 2011. Our offices are located in Kiev, Kharkiv (Ukraine), London (UK) and in many other countries.

The SION team includes highly qualified lawyers, attorneys, patent attorneys. They specialize in providing professional services in the following practices:

  • intellectual property,
  • tax law, finance law,
  • investment law.

SION specialists:

  • provide high-quality services to domestic and foreign businesses in our country and abroad;
  • promptly carry out legal, consulting support for the introduction of new products to our and foreign markets;
  • provide legal protection, consulting support to startups.

SION offers comprehensive legal services on a turnkey basis, preliminary carrying out a deep Due Diligence of the client’s business. This service is unique for the Ukrainian market: not every patent firm offers it. Meanwhile, the specialized specialists of SION can boast of extensive experience in this area. Our Due Diligence skills allow us to prevent financial, reputational and business risks.

The scope of the company’s expertise includes the following tasks:

  • development of a comprehensive business protection strategy;
  • registration of trademarks and other objects of intellectual property (IP) with the National Patent Office of Ukraine, similar bodies of other countries;
  • IP audit, formation of an intellectual portfolio of business;
  • placement of client’s IP objects in customs registers;
  • ensuring the stopping of customs clearance of goods on the basis of violation of IP rights (Ukraine, other countries);
  • tax planning, implementation of legal tax optimization schemes;
  • analysis of risks when introducing new products to the Ukrainian and foreign markets;
  • representation, protection of the interests and rights of the client in court on the protection of IP, compensation for losses due to violation of rights, as well as in administrative, criminal proceedings;
  • identification of the geography of production, points of sale of counterfeit products, prosecution of violators;
  • mentoring innovative startups;
  • services to ensure the receipt of venture capital investment for innovative start-ups in the UK jurisdiction.

Among the regular customers of the company are representatives of small, medium, large businesses from the fields of IT, pharmaceuticals, energy, mechanical engineering, the fashion industry, public catering. As well as universities, private innovators, inventors.

Our employees are members of the Ukrainian Bar Association, the Ukrainian Patent Attorney Association, are involved in the development of draft laws, holding master classes and seminars for lawyers. The company entered the top of the prestigious Legal500 rating among law firms in Europe and Central Asia for 2021.

We have gained a reputation, authority and trust in the market of legal, patent, consulting services. SION specialists invest their knowledge and experience to help clients, to ensure the stable functioning of companies, their successful commercial development.

Our mission
Our mission

Our goal is to support business and innovators in the process of introducing innovations into the production cycle. provide further protection and monetization.


Our patent attorneys and advocates defend the rights of clients in Ukraine, Great Britain, CIS countries, the USA and the European Union.

We are the first
We are the first

Actions of SION patent law firm have gone beyond the boundaries of an ordinary patent law firm.

Professional experience
Professional experience

The average length of service of the company's employees is 12 years.

We are trusted

  • Agda
  • Bananza
  • Blauberg
  • Ht
  • Hypersensium
  • Imp
  • Krka
  • Lacilact
  • Michelson
  • Pc
  • Pravdacar
  • Rekast
  • Rompharma
  • Seadora
  • Sova
  • Technok
  • Tehnopol
  • Vaesoli
  • Vents
  • Vorwarts
  • Zdorovia_narody
  • Zdorovie