Miss Mariya Derelieva > Georgiev, Todorov & Co > Sofia, Bulgaria > Lawyer Profile

Georgiev, Todorov & Co
1000 SOFIA
Mariya Derelieva photo

Work Department

Energy and natural resources


Attorney at law

Main practice areas: Corporate and Commercial law, Energy Law & Natural Resources, Dispute resolution and Arbitration, Administrative Law and Appeals, Healthcare and Pharmaceutical Law


Mariya Derelieva is a Senior Associate at Georgiev, Todorov & Co. Law Offices. Before joining the law firm, she worked as legal expert with the Energy and Water Regulatory Commission (EWRC) and with the Ministry of Finance where she gained specific knowledge in energy regulatory matters and in litigation. As legal expert with the EWRC, Mariya participated in the expert groups for the implementation of the European Union’s Third Energy Package in Bulgarian legislation.  As a legal counsel at the Ministry of Finance, she participated in the preparation of the state’s position in international arbitration cases initiated under the rules of ICC, UNICITRAL and the Energy Charter.

Her main areas of expertise include dispute resolution, domestic and international arbitration proceedings, appeals of administrative acts, as well as corporate and commercial, energy, and healthcare and pharmaceutical law.  At the Georgiev, Todorov & Co Law Offices, Mariya consults clients on corporate and regulatory matters and as litigator, she represents clients in court on commercial and administrative cases.

Major clients, which Mariya has advised include power plants such as TEC Bobov Dol and Brikel, as well as to heating cogeneration plants in major cities such as Toplofikatcia Burgas, Toplofikatcia Ruse, Toplofikatcia Sliven, Toplofikatcia Pernik and Toplofikatcia Pleven. She has also provided legal consultancy to Dalkia SA, France for the incorporation of their Bulgarian subsidiary. 

Recently, Mariya represented in court other key players such as Bulgarian National Bank in administrative proceedings, the medical institutions of Acibadem City Clinic group in commercial litigation and BMF Port of Burgas on a dispute in the European Court of Justice. 
As litigator, she has also provided  legal assistance in court to Sofia Municipality, Agromill Bulgaria and Proshek Immobilien. As consultant,  Mariya advises on a daily basis on corporate matters various clients: Evros Kip – leading distributor for cosmetics and perfumery on the Bulgarian market, Pasha Global – hotel and gaming management company, Comsed – the largest toy chain store on the Bulgarian market, and the health providers Hill Clinic and On Clinic.She has also contributed twice to the Bulgarian chapter for Energy Law in “Global Legal Insights” and to many legal articles in Bulgarian online platforms. 


Fluent in English, German and Bulgarian


Sofia Bar Association


Sofia University, Faculty of Law

Lawyer Rankings

Bulgaria > Energy and natural resources

Georgiev, Todorov & Co’s energy and natural resources practice excels in handling disputes for clients in the sector. The firm is representing 47 hydroelectric power plant operators in separate cases against the Energy and Water Regulatory Commission. In addition to its disputes work, the firm assists with drafting complex contracts and agreements, and advises on debt restructuring for energy project holding companies. The team is jointly led by Ivan Todorov and Arno Mamasyan, who has a ‘deep knowledge of energy law.’ Nikolay Lazarov, who ‘produces work of the highest quality’ and the ‘precise and hardworkingMariya Derelieva are other key contacts. Miglena Peneva has ‘excellent negotiation skills‘.

Bulgaria > Dispute resolution

(Rising stars)

Mariya DerelievaGeorgiev, Todorov & Co

Georgiev, Todorov & Co, described as ‘one of the best law firms in Bulgaria for dispute resolution’ acts for clients in high-value and complex disputes, with particular expertise in real estate and energy matters. Arno Mamasyan, who jointly leads the practice, has extensive arbitration experience, having acted for clients in several arbitration courts and sitting on the Arbitration Court for the Confederation of Employers and Industrialists. The firm acts for both state and private entities, and has experience in proceedings at the administrative, national and supreme courts in Bulgaria. Ivan Todorov, managing partner, jointly heads the practice. The ‘highly efficient’ Miglena Peneva specialises in real estate matters, and ‘detail-oriented’ Mariya Derelieva has expertise in energy disputes. Tsvetelina Dimitrova is another name to note.

Bulgaria > Healthcare and life sciences

Georgiev, Todorov & Co focuses on handling disputes in the healthcare sector, with a successful track record in representing hospitals and medical centres in reimbursement disputes with the National Health Insurance Fund. Notably, the team acted for MBAL Hospital Evropa, successfully appealing against the revocation of its licence by the regulatory authorities before the Supreme Administrative Court. Non-contentious work includes the provision of ongoing advice regarding regulatory compliance, data protection, licensing and employment issues.  Ivan Todorov heads the team, which includes senior associate Mariya Derelieva, who is particularly active. Tsvetelina Dimitrova and Alexander Pachamanov are other key contacts.