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Work +370 5 268 1888
Fax +370 5 212 5591
Riga, Tallinn, Vilnius

Dr Jaunius Gumbis

Work +370 52681830

Work Department

Industry & Regulatory Practice Group.


Partner; Head of the Industry & Regulatory Practice Group. Practice areas: Competition; Energy & Utilities; IT & Communications; International, EU & Domestic Trade; Public Procurement & PPP.


1992 to date - Ellex Lithuania (previously LAWIN Vilnius), 2001 to date - Partner, Head of the Industry & Regulatory Practice Group; 2005 to date - Visiting Professor, Salzburg University; 1993 to date - Associate Professor of Philosophy of Law and Legal Reasoning, Vilnius University.


Lithuanian, English, Russian.


Recommended Arbitrator of Vilnius Court of Commercial Arbitration; Energy Law Group.


2002 - Vilnius University, Ph.D. degree; 1995 - Studies at Jean Moulin University, Lyon, France; 1994 - Studies at International Institute of Human Rights, Strasbourg, France; 1993 - Studies at Academy of American and International Law, Dallas, USA; 1993 - Vilnius University, Master of Laws (LL.M.) degree.


EU and competition

Within: EU and competition

Ellex has a ‘high-quality’ practice, which has recently been active in Lithuanian Competition Council (LCC) investigations, state aid cases and private enforcement litigation. Pfizer and JCDecaux are key clients. Practice head Marius Juonys defended Guliverio kelionės and Zigzag Travel in a cartel matter. EU practice head Jaunius Gumbis is well respected, as is recently promoted associate partner Karolis Kačerauskas. Among the senior associates, Paulius Mencas was recently promoted, Giedrė Adomavičiūtė joined from Sorainen and Ilona Jančiauskaitė is an experienced figure.

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Intellectual property

Within: Intellectual property

Ellex excels in the IP litigation space. Group head Vytautas Mizaras is representing Akzo Nobel Baltics in two multijurisdictional disputes, including defending the client in a landmark trade mark dispute concerning passing off of signs that are similar to registered a trade mark. Jaunius Gumbis continues to represent Exeltis Baltics in patent litigation regarding the revocation of four patents owned by Bayer. Telia Company and the Lithuanian Basketball Federation are also clients.

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Projects and energy

Within: Projects and energy

Ellex acts for an array of energy companies – including gas, wind and electricity – and heating utilities. Dovilė Greblikienė leads the energy group, which is part of the regulatory industries and trade practice led by Jaunius Gumbis, and is advising Veolia on a heating sector lease agreement; the client is being represented in a regulatory investigation relating to the lease, which ended in 2017. Infrastructure projects practice head Ramūnas Petravičius is representing the Republic of Lithuania in arbitration with Gazprom pertaining to allegations that the respondent failed to supply natural gas at a fair price. Other clients include enerty, Klaipėdos nafta, Nord Pool Spot and Minijos nafta.

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Within: Leading individuals

Jaunius Gumbis - Ellex

Within: TMT

Clients such as IBM and Sanofi call on Ellex’s specialists, including members of its life sciences, entertainment and commercial practice. Department head Jaunius Gumbis acted as local counsel to Hubert Burda Media on making a $27m series C investment in Tomas Kamblevičius, Julius Zaleskis and Mantas Rimkevičius are up-and-coming senior associates.

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