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Lazarinka Naydenova

Lazarinka Naydenova

Senior Associate

Lazarinka Naydenova's practice focuses on all aspects of European (EU) competition law, with particular emphasis on merger control proceeding, abuse of dominance, cartel matters, and state aid.

Lazarinka joined the firm's Brussels team in 2016. Prior to joining the firm, Lazarinka worked in another leading international competition law firm in Brussels. She has worked as an in-house lawyer at the Bulgarian Ministry of Finance and has also undertaken a traineeship at the European Commission's Directorate General for Competition. Lazarinka worked the ex-U.S. processes for Monsanto in its US$66 billion acquisition by Bayer, a transaction that won the 2019 GCR Awards for "Global Antitrust Matter of the Year" and "Merger Control Matter of the Year - Europe" and for Fitbit in its acquisition by Google which won the 2021 edition of the same award. She also represented a client in a dawn raid conducted by the European Commission in relation to an alleged violation of the antitrust rules.


  • Boston Scientific in its US$615 million acquisition of Apollo Endosurgery.
  • Thermo Fisher Scientific Inc. in its $17.4 billion acquisition of PPD Inc., a leading global provider of clinical research services. The transaction was reviewed and received unconditional clearances from competition authorities in the U.S., the EU and more than a dozen other jurisdictions worldwide.
  • Boston Scientific Corporation in its $1.07 billion acquisition of Lumenis LTD from Baring Private Equity Asia.
  • Boston Scientific Corporation in its $0.5 billion acquisition of Farapulse Inc.
  • Fitbit Inc. on its $2.1 billion sale to Google.
  • Pfizer in relation to the spin-off and combination with Mylan NV of Upjohn, Pfizer's established medicines division.
  • Pfizer in relation to its joint venture with GSK to combine the two companies' consumer healthcare businesses worldwide, securing merger control clearances outside the U.S.
  • Boston Scientific Corporation in relation to its $4.2 billion acquisition of BTG plc., before competition authorities worldwide.
  • Monsanto Company in connection with its $66 billion acquisition by Bayer. One of the lead associates assisting with antitrust clearances outside North America. This complex case spanned over 20 months and involved more than 2,000 product markets reviewed by the European Commission following an in-depth review and extensive commitments. The transaction was reviewed and approved by the DOJ and almost 30 other antitrust enforcers worldwide.
  • General Electric in its transaction combining GE Oil & Gas with Baker Hughes to create a new publicly traded company owned 62.5% by GE with $23 billion in combined revenue. Co-lead associate for the EU filing that ended with an unconditional clearance.
  • AT&T in international merger filings regarding its $1.6 billion acquisition of the online advertising platform AppNexus.


The Legal 500 EMEA
Belgium Competition: EU and Global (2023)



  • Post-Graduate Diploma in EU Competition law, King's College London, 2021, with Merit
  • LL.M., Intermational Economic Law, Maastricht University, 2014, cum laude
  • Master of Laws, Sofia University St. Kliment Ohridski, 2011, with honors


  • Brussels, Belgium
  • Sofia, Bulgaria

Government & Military Service

  • Legal Advisor, Ministry of Finance of the Republic of Bulgaria


  • English
  • Spanish
  • Bulgarian