SLOVENIA Law and Practice Contributed by: Tomaž Ilešič, Aleksandra Mitić, Ajas Midžan and Lea Zahrastnik, Rojs, Peljhan, Prelesnik & Partners
Rojs, Peljhan, Prelesnik & Partners is a leading full- service commercial law firm in Slovenia, comprising 38 lawyers. The firm advises on complex corporate transactions, M&A, banking and finance, capital mar - kets, competition, litigation, infrastructure, energy and intellectual property, and is consistently recog - nised as one of the pre-eminent practices in the Slo - venian market. The firm’s competition department numbers seven experts, making it one of the few in Slovenia with the capacity to handle the most com -
plex mandates with significant transactions and dis - putes. It has an established track record in significant M&A transactions, closely watched investigations before the Slovenian Competition Protection Agency and complex antitrust litigation before the Slovenian courts. The department is among a small number of Slovenian firms with direct experience before the Eu - ropean Commission and the Court of Justice of the EU. The firm also advises regularly on state aid and collective redress.
Authors
Tomaž Ilešič is a senior partner and head of the Competition department at Rojs, Peljhan, Prelesnik & Partners. With over two decades of practice, he is widely regarded as one of Slovenia’s most prominent competition lawyers,
Ajas Midžan is an associate in Rojs, Peljhan, Prelesnik & Partners’ compe - tition department, having joined in 2022 following his graduation with distinction (cum laude) at the Faculty of Law, University of Ljubljana (his
with particularly deep expertise in the pharmaceutical sector built through sustained advisory work for major international pharmaceutical companies across competition, regulatory and compliance matters. He has led the defence of clients in significant proceed - ings before the Slovenian Competition Protection Agency and the European Commission, and regularly advises on the competition dimensions of complex corporate transactions. He also maintains an active regulatory and litigation practice before Slovenian courts and authorities.
thesis examined the EU and Slovenian legal frame - work on renewable energy sources). His practice covers competition law, mergers and acquisitions, and energy regulation, with a focus on merger control, antitrust compliance and the structuring of complex commercial arrangements. In the energy and infrastructure sectors, he advises on regulatory and contractual frameworks governing major projects. Ajas pursued advanced competition law training in Cambridge in 2023 and publishes with Concurrences Antitrust Publications.
Aleksandra Mitić is a senior competi - tion lawyer who joined Rojs, Peljhan, Prelesnik & Partners in early 2026, bringing with her a strong reputation built over many years in private practice. Ranked in Band 2 by
Lea Zahrastnik joined Rojs, Peljhan, Prelesnik & Partners in 2024 following her graduation with distinction in Law from the University of Ljubljana, where her thesis examined the impact of algorithmic pricing on tacit collu -
Chambers and Partners, she has acted on some of the most significant competition matters before the Slovenian Competition Protection Agency and the Slovenian courts, representing major domestic and international clients in regulatory proceedings and civil litigation. Her practice also encompasses state aid and mergers and acquisitions, where she advises on the competition aspects of complex corporate transactions. Aleksandra holds an LL.M. in Competition Law from King’s College London.
sion and self-preferencing. Prior to joining, she gained experience at Cleary Gottlieb Steen & Hamilton in Brussels, advising major technology and consumer goods companies on EU competition matters, and at the Court of Justice of the EU, working in the chambers of Advocate General Tamara Ćapeta and Judge Marko Ilešič. She won first place and the best oralist award at the EU Law Moot Court Competition.
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