Business Legal Support
- outsourced legal support;
- contract work;
- corporate matters;
- compliance.
Sviatoslav Petrovych Onishchuk
Attorney-at-law | Certificate RN No. 1307 dated 04 November 2017
Attorney-at-law with over 17 years of professional experience in legal consulting, commercial law, regulatory matters and court protection.
Combines attorney practice, 9 years of service in the prosecution authorities of Ukraine and modern international legal education.
Legal opinions • Business legal support • Commercial disputes • Military law • International legal cooperation
Why clients choose me
A combination of court practice, experience with public authorities, business-oriented legal support and international legal education.
- Over 17 years of legal practice
- 9 years in prosecution authorities
- International legal education
- Integrated business legal support
- Preparation of legal opinions
- Representation before courts of all jurisdictions
- Interaction with public authorities
- Individual approach to every matter
About the attorney
Sviatoslav Onishchuk is an attorney-at-law with over 17 years of professional experience, combining attorney practice, long-standing service in the prosecution authorities and modern international legal education.
His main areas of activity include business legal support, preparation of legal opinions, court representation, resolution of complex commercial, administrative and military disputes, and advice on interaction with public authorities.
He is currently studying in the Grado en Derecho programme at Universidad Internacional de La Rioja (Spain), deepening his knowledge of European, international and comparative law.
- legality
- integrity
- professional ethics
- confidentiality
Practice Areas
Commercial Law
- contract disputes;
- debt recovery;
- corporate disputes;
- international contracts.
Regulatory and Administrative Matters
- advice on interaction with public authorities;
- administrative disputes;
- legal risk assessment;
- preparation of procedural documents.
Military Law
- payments to military service members;
- cases concerning missing persons;
- cases concerning prisoners of war;
- court disputes with military units.
Criminal Law
- defense of suspects;
- defense of accused persons;
- representation of victims;
- official misconduct and economic crimes.
Legal Opinions
Preparation of legal opinions on complex issues of applying Ukrainian legislation, legal risk assessment, contract work, business activity and interaction with public authorities.
Analysis focus
- complex issues of applying Ukrainian legislation;
- legal risk assessment;
- contract work and business activity;
- interaction with public authorities.
Business Legal Support
Integrated support for companies in contract, corporate, claims, compliance and court matters.
Business support combines preventive legal work, risk analysis, document preparation, company representation and support in interactions with counterparties and public authorities.
Included services
- contract work;
- corporate matters;
- compliance;
- claims work;
- representation of companies;
- legal audit;
- legal outsourcing.
Court Practice
Case descriptions are presented without personal client data and only to the extent approved for publication.
Protection of the family of a fallen service member
Rivne District Administrative Court declared unlawful the conclusions of an internal investigation by a military unit that, without sufficient evidence, effectively accused the service member of voluntary surrender.
Representation of military service members
Matters concerning military medical commissions, financial support, social payments and missing persons.
Commercial disputes
Representation of companies in disputes involving contract performance, debt recovery and foreign economic contracts.
Education and Career Path
Education
- 2003-2008 Yaroslav Mudryi National Law University, Specialist in Law.
- 2024-present Universidad Internacional de La Rioja (UNIR), Spain, Grado en Derecho.
UNIR focus areas
Career
- 2008-2017 Prosecution authorities of Ukraine.
- 2017-present Attorney practice.
Prosecution focus
- procedural supervision;
- representation of state interests in courts;
- analysis of financial and commercial activity;
- preparation of procedural documents.
Attorney practice focus
- court representation;
- criminal defense;
- military law;
- commercial disputes;
- legal opinions and legal audit.
International Activity
The international component of the practice combines studies at UNIR (Spain), participation in ERA programmes, foreign languages, work with international contracts and development of competence in European, international and comparative law.
UNIR, Spain
- current studies in the Grado en Derecho programme;
- Desarrollo de Competencias Básicas para la Abogacía;
- Voluntariado Social;
- Colectivos Vulnerables desde una Perspectiva Criminológica y Penal.
International professional development
- Annual Conference on EU Labour Law 2026;
- Fundamental Rights in Europe;
- Protecting Children's Rights in the Online Environment;
- international certificates and professional programmes.
International legal cooperation
- work with international contracts;
- foreign languages;
- European, international and comparative law;
- participation in international programmes and professional events.
Membership and Public Service
Ukrainian National Bar Association
Attorney-at-law in Ukraine since 2017.
Free Legal Aid System
Provision of legal assistance to citizens of Ukraine.
Quality Assessment Commission of the Free Legal Aid System
Member of the commission for assessing the quality, completeness and timeliness of free legal aid in Rivne Region.
Languages
Ukrainian
Fluent
English
B2
Spanish
B1
Polish
A1
French
B1
Achievements and Certificates
Proof of professional training, international programmes and language preparation.
Certificate RN No. 1307
Right to practice law as an attorney from 04.11.2017.
Professional development
Regular confirmation of attorney professional development for 2021, 2023, 2024 and 2025.
International legal education
Grado en Derecho and programmes in advocacy competencies, volunteering and protection of vulnerable groups.
European law
Training in EU labour law, fundamental rights and children's rights in the online environment.
UNBA
UNIR
ERA
Language certificates
Contacts
Sviatoslav Petrovych Onishchuk, attorney-at-law. Please use phone, email or the official social pages to get in touch.
- Phone
- +38 (067) 583-13-10
- sviatoslav555@ukr.net
- Address
- Kostopil, Rivne Region, Ukraine