Home / People / Yana Antonova
Portrait ofYana Antonova

Yana Antonova

Senior Associate

CMS Sofia
Landmark Centre
14 Tsar Osvoboditel Blvd.
Floor 1, 2
1000 Sofia
Languages Bulgarian, English, German

Yana Antonova is a senior associate in the Litigation, Arbitration, Insurance, Employment team of CMS Sofia, who mainly focuses on dispute resolution. 

Yana specialises in litigation and alternative dispute resolution such as negotiation and arbitration. She has extensive experience representing clients in court, as well as before domestic and international arbitration tribunals, and has a commendable track record in achieving favourable court and out-of-court settlements. She has successfully managed complex cases involving commercial, employment, insurance, real estate, and tax issues, often involving more than one jurisdiction.

Her practice includes handling cases before special administrative jurisdictions, such as the Commission for Protection of Competition and the Commission for Anti-Corruption and Illegal Assets Forfeiture. She has extensive experience in civil confiscation and conflict-of-interest proceedings. 

Yana advises clients from diverse sectors including agriculture, financial services, information and communication technology, energy, the food Industry, manufacturing, and many others. 

Before joining CMS, Yana worked in the litigation team of an international consultancy firm and contributed as a local expert on a Bulgarian insolvency reform project supported by the European Commission's Structural Reform Support Service.

more less

“A promising litigator” and “very efficient and hard working”

Legal 500

Relevant experience

  • A global leader in water technology systems on settling a dispute with a Bulgarian hydropower producer before the ICC International Court of Arbitration.
  • Two Bulgarian holding companies on a confiscation claim worth over EUR 100 million brought by the Commission for Anti-Corruption and Illegal Assets Forfeiture in connection with pending criminal proceedings.
  • A Bulgarian hydropower producer in a post-privatisation dispute initiated by Bulgaria’s Public Enterprises and Control Agency.
  • Leading agriculture companies in several arbitration cases before the Arbitration Court at the Bulgarian Chamber of Commerce and Industry. 
  • A leading insurance company on a number of litigation proceedings regarding insurance and damage claims. 
  • A foreign embassy in Bulgaria before the Supreme Court of Cassation in an international employment dispute.
  • Two major Bulgarian fresh juice producers on unfair commercial practices proceedings before the Bulgarian Commission for Protection of Competition.
  • A number of electricity producers before the Supreme Court of Cassation in compensation claims against the state, represented by the Minister of Finance, involving Bulgaria’s feed-in tariff.
  • A former minister in the government of the Republic of Bulgaria in conflict-of-interest proceedings before the Commission for Anti-Corruption and Illegal Assets Forfeiture. 
more less

Memberships & Roles

  • Sofia Bar Association
more less


  • 2016 – LL.M., Law, Sofia University “St. Kliment Ohridski” 
more less


CMS Expert Guide to Digital Litigation in Bulgaria
1. Describe the state of digitalisation of the civil justice system in your jurisdiction in general. Over the last ten years significant efforts have been committed by Bulgaria's legislature, executive...
Class actions in Bulgaria
See the Overview of the Representative Actions Directive >> 1. Do you have a specific procedure or procedures for bringing “opt-in” class actions?  If so, please outline such procedure(s) and...
Bulgaria reduces VAT rate on hotel accommodation and restaurant services
On 12 June 2020, the Bulgarian parliament passed a bill amending the VAT rates for certain goods and services as a temporary measure in response to the COVID-19 pandemic. The amendments were promulgated...
Bulgaria amends its Emergency Measures Act
Bulgarian lawmakers have suggested amendments to the Emergency Measures Act adopted just two weeks ago in Bulgaria. (For details on the original Emergency Measures Act, see: Bulgaria: state of emergency...
Bulgaria: state of emergency legislation published today
Following numerous legislative proposals for amendments and supplements between first and second voting and a partial presidential veto, the Bulgarian parliament adopted the Act on the Measures and Actions...
Bulgaria's COVID-19 State of Emergency measures bill received initial parliamentary...
In the wake of Bulgaria's March 13 law that places the country in a State of Emergency until April 13, the Bulgarian parliament is about to adopt a Bill on the Measures During the State of Emergency...
Bulgarian high court found liable for damages caused by infringement of...
The Sofia Appellate Court issued a landmark decision on an action claim brought against the Bulgarian Supreme Administrative Court, awarding the claimant compensation of nearly BGN 1 million for damages...
EU Advocate General supports paid annual leave in Bulgaria in cases of...
Unlawfully dismissed workers in Bulgaria are entitled to paid annual leave in the period from the date of dismissal until the date of reinstatement and are therefore entitled to receive the accumulated...
Bulgaria refers question on wind-solar fee to European high court
The Bulgarian Supreme Court of Cassation has just referred a question to the EU's Court of Justice (CJEU) on whether a state fee applied to the income of wind and solar energy producers conforms with...
Bulgaria adopts new rules on mandatory transfer pricing
With the recent passage of new tax legislation on mandatory transfer pricing (TP) documentation, Bulgarian taxpayers meeting certain criteria are now obliged to prepare local TP documentation with information...