Tomaž Ilešič

Tomaž Ilešič


Fluent in:

English, Serbian, Croatian, French

Tomaž Ilešič has joined Rojs, Peljhan, Prelesnik & partners in 2001 after his traineeship at Higher Court of Ljubljana.

Fluent in:

English, Serbian, Croatian, French

He specialises in competition law, M&A, corporate and commercial law and legal practice related to life sciences.

Tomaž has extensive experience in competition law and has advised in that field on several major corporate transactions undertaken by the firm. He has led defence teams in several attention-grabbing competition cases in front of national competition authority and European Commission.

He has developed a broad-based expertise through working with a range of major pharmaceutical companies. He provides advice on the full range of regulatory matters.

He focuses on representing clients in front of regulatory authorities and advises domestic and foreign clients.


Highlights include advising/representing

• One of the largest retailers in region with respect to drafting and filing the notification for merger clearance
• A pharmaceutical client in the deference in alleged cartel case before European Commission and in the proceedings in front of the General Court of the European Union by challenging the decision of the EU Commission finding that the client had infringed Article 101 of the TFEU
• A Client in the competition proceedings and when applying for leniency and obtainment of full immunity given by the Competition Protection Office of Slovenia
• The international producer of construction aggregates on contractual agreements between one of the client’s subsidiaries and its main customer from the perspective of competition law;
• Company, specialising in ecology, transport and engineering, on the tendering process for construction of the new medical unit in Slovenia
• Two pharmaceutical companies in the proceedings related to the alleged participation in a cartel with respect to price fixing and market sharing, when supplying medical products for human use to public pharmacies
• A company specialised in the international electricity trading, in drafting and filing a notification for obtaining merger clearance in the acquisition of the energy company
• One of the largest tobacco companies in Eastern Europe on the copyright infringement and trademark cancellation claim


  • Bar Exam, 2001
  • College of Europe, Master of Arts in European Studies, 1997-1998
  • University of Ljubljana, Faculty of Law, Bachelor of Law, 1992-1997


  • Law firm Rojs, Peljhan, Prelesnik & partners, Partner since 2005
  • Law firm Rojs, Peljhan, Prelesnik & partners, Associate and Senior Associate, 2001-2005
  • Higher Court of Ljubljana, Traineeship, 2000-2001
  • Government of Slovenia, Office of Legislation, 1999-2000
  • Deloitte & Touche Ljubljana, 1998-1999


  • Co-author of the leading handbook on EU Law in Slovene language, Cankarjeva založba, 2002, 800+ pages
  • Co-author of the handbook “Legal aspects of association status of Slovenia”, Gospodarski vestnik, 2000
  • Co-author of the Handbook on European Enlargement, T.M.C. Asser Institute, The Hague, 2003
  • Lobbying in the European Union, Palgrave, 2002 (co-author)
  • Guide to European Company Laws, 3rd edition, Sweet & Maxwell, 2007 (co-author)
  • Numerous articles in the Slovenian law journals


  • "The Best Young Lawyer of the year 2002 Award" awarded by the Slovene Lawyers’ Association