Chambers Global

Chambers Europe

Legal 500


Banking, finance and capital markets


Kambourov & Partners has ‘exceptional knowledge and experience in the field of banking and finance law’, and provides ‘prompt and high-quality services’ in insolvency proceedings, bankruptcy investigations and restructuring, among other matters. The managing partners are Yavor Kambourov, who advised BNY Mellon Corporate Trustee Services on the claiming of receivables from a debtor (the insolvent Corporate Commercial Bank), and Vladimir Rangeloff, who focuses on foreign and private equity investments, large-scale due diligence, restructuring and bond placements. Major clients include Vivacom, First Investment Bank, Visa Europe and Wizz Air. Rangeloff represented the hedge fund Worldview in its takeover of Petroceltic, and is currently assisting Petroceltic Group with ongoing matters such as the refinancing of a loan facility, which was initially extended by HSBC, Standard Chartered, Nedbank and the International Finance Corporation.

Commercial, corporate and M&A


Kambourov & Partners is noted for its 'exceptional knowledge and experience' and provides ‘prompt and high-quality' advice to domestic and international companies on management and compliance matters, M&A transactions, and corporate reorganisations and restructurings. Managing partner Vladimir Rangeloff, who covers M&A, corporate finance and foreign investments, and Veronika Hadjieva, who focuses on business separation, corporate structuring and privatisation, head the team, which also includes Ivo Alexandrov and Yonko Hristov. The firm recently advised private equity fund Francisco Partners on its acquisition of a majority stake in Bulgarian company Dynamo Software.

Dispute resolution


Kambourov & Partners handles international litigation and arbitration, and specialises in claims in the IP, energy, finance and insurance sectors. The team is ‘unique in terms of its experience and sector diversity, quality of service, and commitment to helping clients’, and ‘combines local expertise with an understanding of international institutions’. Key contacts include managing partner Yavor Kambourov - ‘an absolute authority, whose market insight, experience, intelligence and legal capacity make him a spectacular expert’ - and team head Emil Emanuilov - ‘a brilliant litigator, with a thorough, analytical mind and the ability to think strategically’, who represents clients in multi-jurisdictional and multi-party litigation and arbitration. The firm represented Strabag in a dispute over payment for construction work.

Energy and natural resources


Kambourov & Partners offers the full range of legal services in the sector, including advising on energy generation, transmission, distribution and supply, regulatory regimes, project finance, and litigation. Clients include investor-owned utilities, energy project developers and government entities. In a recent highlight, the team advised Salp on its participation as main contractor in the public procurement for the design and construction of the Dobrich-Silistra gas pipeline, which would allow for natural gas distribution in the region. Stefan Tzakov heads the practice, and Atanas Shopov is also noted.

EU and competition


The ‘reliable, attentive, highly qualified and well-organised team' at Kambourov & Partners stands out for 'its incomparable level of commitment and dedication and across-the-board market knowledge’; it regularly advises on matters such as market dominance, cartels, vertical restraints and unfair competition. Practice head Stefan Tzakov is ‘truly exceptional’ and ‘combines all the qualities you would imagine the perfect lawyer to have, blending together extensive legislative knowledge, deep industry insight, an analytical mind, intelligence and trustworthiness’. Recently promoted senior associate Plamen Yotov is deputy head of the team and has expertise in cases involving alleged abuse of stronger bargaining position. The team counts international and domestic companies such as Lidl, Wizz Air, Prestige 96 and Zora among its clients.

Intellectual property


Kambourov & Partners has 'a unique position in the market as no other firm has better insight into the media and entertainment industry'; it fields 'a team of great negotiators', which includes team head Margarita Guigova, who is 'legally, commercially and personally brilliant' and 'a terrific problem solver and litigator', and associate Yana Todorova. The team's entertainment clients include authors, performing artists, movie producers, broadcasters and corporations; Prestige-96, singer Orlin Pavlov and journalist Sevda Shishmanova are notable examples. Recent highlights include Guigova defending Sofia Municipality in a copyright dispute brought by a sculptor relating to a monument previously located in front of the National Palace of Culture, and acting for Global Vision in a copyright infringement case relating to fair use issues surrounding parodied excerpts in a comedic television show.

Projects and PPP


Recent highlights for the practice at Kambourov & Partners include advising a consortium including HNA Airport Group and Plovdiv Airport Invest on the concession procedure for Plovdiv Airport, and assisting Monolit on the design and construction of the third Sofia metro line project including eight new metro stations. Other clients include Nikmi, Kaufland Bulgaria and Strabag. Managing partner Stefan Tzakov and Atanas Shopov are the key names to note; Tzakov is experienced in PPP matters and concession procedures, and Shopov specialises in project developments.

Real estate and construction


Kambourov & Partners assists developers, construction companies, investors, occupiers and financial institutions with large-scale projects, structuring transactions, facilitating negotiations and drafting FIDIC contracts, as well as arbitration and litigation. The team is ‘very well informed, immensely dedicated to its work and has a perfect reputation in the market’, while offering ‘legal expertise and a business focus’. Practice head Atanas Shopov advises on infrastructure, industrial, commercial and residential projects, and the ‘loyal and creative’ Radosveta Kojuharova, who is an ‘excellent, high-performing and results-driven professional with in-depth knowledge’, ‘stands out for her experience in retail and commercial projects for shopping centres, office buildings and hotels’. Major clients are Nikmi, Monolit and Burgas Plaza Mall. The firm advised the largest construction group in the CEE region – Strabag – on the planning and development of four projects in Bulgaria.



Kambourov & Partners' team of 'fast-paced professionals' has 'excellent comparative analysis skills and a flexible approach', and regularly acts for clients in the technology, telecoms, big data, media and financial sectors; examples include Broadcom, Kaufland and Netflix. The group also recently advised Net Info on the implementation of its GDPR programme, and assisted Vodafone Global Enterprise with its launch in Bulgaria. Mitko Karushkov heads up the department, and associate Mario Arabistanov 'thinks outside the box while concentrating on the result'.

Transport (including shipping)


Stefan Tzakov and Atanas Shopov jointly lead the department at Kambourov & Partners, which handles issues across the aviation, rail, automotive and shipping sectors; Tzakov focuses on state-related matters and Shopov specialises in infrastructure and procurement issues. Recent highlights include advising Mennica Polska on its participation in a public procurement process for the implementation of an electronic ticketing system, and assisting Kapsch TrafficCom with the development and implementation of an electronic system for the road network for collecting fees. Monolit, Wizz Air and Toyota are also clients.