Mr Arno Mamasyan > Georgiev, Todorov & Co > Sofia, Bulgaria > Lawyer Profile

Georgiev, Todorov & Co
1000 SOFIA
Arno Mamasyan photo

Work Department

Corporate and Commercial, Dispute Resolution


Senior Partner

Main practice areas: Corporate and Commercial Law, Banking and Finance, Insurance Law, Real Estate and Construction


Arno Mamasyan joined Georgiev, Todorov & Co. Law Offices in 1996. He is a senior partner and specializes in Civil Litigation and Arbitration, Corporate and Commercial Law, Property Law, and Privatisation. He graduated from Sofia University, Faculty of Law. Prior to joining the law firm, he was the chief privatisation expert in the Ministry of Industry (currently Ministry of Economy) from 1993 to 1994. He has drafted a legal opinion for the legal status of the privatization in Bulgaria for the catalogue “Center for International Legal Studies”.

His practice includes participation in projects of the European Bank for Reconstruction and Development (EBRD), European Stability Mechanism, and the Bulgarian Telecommunication Company. He was a legal adviser of Sofia Municipality for the project for issuing eurobonds and prepared the due diligence report in relation to the privatization of Pharmachim Holding.

Arno has successfully advised clients in various fields, such as Gazprom, on their investment in a local company (Topenergy), as well as on their licensing regime, their gas imports and exports. He has also consulted clients such as Dundee Precious Metals, Chelopech Mining, AG Capital, Bulgarian Stock Exchange, Road Infrastructure Agency, International Asset Bank, Forton International, and many others. He has represented DSK Bank and AstraZeneca in various cases, as well as ENEL for the large project for the construction of the Thermal Power Plant Maritza East 3.

He is the current legal advisor of both private and public enterprises. In the field of corporate and commercial law, Arno consults Grand Energy Distribution, Heating Power Plants Ruse and Maritza 3, Black Peak Capital, Galchev Engineering, Borica, Ciela, and Hill Clinic. He is also the leading litigator in high profile matters for the Ministry of Agriculture and Food, Aurubis, Asarel Medet, Kornikom, Advance Properties, and Balkam Group.

He is listed in the Register of Industrial Property Representatives for Inventions, Utility Models and Trademarks.

Arno Mamasyan is an arbitrator in the court of Arbitration with the Confederation of Employers and Industrialists in Bulgaria (CEIB) since 2017.


He is fluent in English and his native Bulgarian.


Sofia Bar Association


Sofia University, Faculty of Law

Lawyer Rankings

Bulgaria > Dispute resolution

(Leading individuals)

Arno Mamasyan – Georgiev, Todorov & Co

Georgiev, Todorov & Costands out for its excellent litigation practice’ and has experience in arbitrations, high-value disputes and administrative proceedings across various industry sectors. Practice leaders Ivan Todorov and Arno Mamasyan led the team which acted as co-counsel to White & Case and NSTLAW in the investment arbitration of Kornikom before the ICSID. Other key members of the practice include Mariya Derelieva, who ‘has a very good track record in her dispute resolution practice’, and Tsvetelina Dimitrova, who is engaged in a variety of administrative and commercial cases.

Bulgaria > Commercial, corporate and M&A

Georgiev, Todorov & Co provides ‘expeditious’ advice to domestic and international clients on a range of commercial and corporate matters across the energy and natural resources, TMT and healthcare sectors, with a strong focus on contentious matters. Corporate partner Arno Mamasyan leads the team and is supported by ‘client-orientedTsvetelina Dimitrova and attorney-at-law Margarita Ivanova, who acts for clients in the pharmaceutical and healthcare sectors on commercial matters.

Bulgaria > EU and competition

Georgiev, Todorov & Co is noted for its expertise in competition disputes – concerning issues such as exclusionary distribution practices, monopoly and abuse of dominant position and trademark infringement – on behalf of its impressive roster of clients. On the non-contentious side, the team’s workload includes marketing campaigns, acquisitions and procedures relating to local and EU competition regulations. Practice leader Alexander Pachamanov acts for clients in the transport and telecoms sectors on competition and antitrust mandates. Arno Mamasyan and Tsvetelina Dimitrova are key contacts in the team.

Bulgaria > Intellectual property

Georgiev, Todorov & Co provides ‘excellent legal advice and court representation for all intellectual property matters’, ranging from licensing and copyright issues to patent and trademark registrations, among others. The team includes key adviser Tsvetelina Dimitrova, who has ‘valuable experience in the sector’ and represented Nexo Capital in an appeal against the Patent Office for the deregistration of a trademark, alongside practice co-leader Arno Mamasyan. Other key members include managing partner and team co-leader Ivan Todorov, and ‘excellent associateMargarita Ivanova.

Bulgaria > Energy and natural resources

Georgiev, Todorov & Co combines its ‘experience in the energy sector, excellent track record in litigation and great communication with clients’ to represent electricity and renewable producers, gas and oil refineries and natural resources companies, in regulatory and court proceedings. Elsewhere, the team also handles non-contentious mandates, including energy infrastructure and development projects. Managing partner Ivan Todorov jointly leads the practice alongside Mariya Derelieva, who represents cogeneration and renewable producers in disputes. Both Arno Mamasyan and Nikolay Lazarov are key members of the team.

Bulgaria > Projects and PPP

Georgiev, Todorov & Co counts investors, municipalities and companies, including Vatia Holding, G.P. Group and Galchev Engineering, among its roster of clients and advises on infrastructure and real estate projects, including public procurement, due diligence, planning and development, and construction. ‘Goal-driven professional’ and practice leader Miglena Peneva specialises in real estate and construction projects, while Arno Mamasyan provides representation to clients, such as Galchev Engineering, in disputes.

Bulgaria > Banking, finance and capital markets

Georgiev, Todorov & Co provides representation to major banks, including the Bulgarian National Bank, in high-stakes disputes and assists asset and wealth management firms in transactions and regulatory matters. The team is led by Arno Mamasyan, who recently represented the International Asset Bank in a €20m dispute regarding the execution of special pledges and acquisition of properties. Miglena Peneva focuses on real estate finance mandates, as well as the financing aspects of EU projects. Mariya Derelieva and Tsvetelina Dimitrova remain key contacts in the team.