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Vilija Viešūnaitė

Managing Partner
Attorney at Law
European Patent Attorney

Vilija is an attorney at law, IP star in Lithuania, and European patent attorney. She is a highly experienced litigator and arbitrator with an impressive twenty-year international track record. She is ranked as Tier #1 for IP practice by numerous international legal directories. Her clients value her for her “hands-on approach to solving complex legal situations in a timely and efficient manner” (Chambers and partners, 2021). The practice, under her supervision, was awarded with the first Pan-Baltic Law firm Award for the Impact Intellectual Property Case of the Year (Managing Intellectual Property Awards, 2019).

Vilija has a successful track record of client representation in the State Patent Bureau of the Republic of Lithuania, the EUIPO and the European Patent Office (EPO) as well as the World Intellectual Property Organization (WIPO) and European Court of Justice (ECJ).


Her work includes strategic advice and acting as lead counsel for multinational and local companies in trademarks and patent cases, protection of inventions and know-how, designs and copyrights, and advising on various IP transactions and unfair competition cases. She is also an appointed arbitrator in the Vilnius Court of Commercial Arbitration.


Below are the highlights of her recent experience:

  • Successful representation of a pharma client in a case of the illegal use of a trademark in a repackaging case;
  • Victory in the copyright infringement case brought by Latga – the association for collective management of authors‘ rights;
  • Assisting the Lithuanian company Axioma in a multinational patent dispute brought by Kamstrup in different jurisdictions;
  • Successful assistance for several Lithuanian companies in disputes brought in China against Chinese companies in bad faith trademark registration cases.

Her expertise was noted internationally:

  • Tier #1 practitioner for IP (Chambers Europe 2019, 2020, 2021)
  • Tier #1 practitioner for IP (The Legal 500, 2021)
  • Trade Mark Star (IP Stars, 2021)
  • WTR 1000: The World’s Leading Trademark Professionals (World Trademark Review, 2021)
  • Best Lawyer of the Year: IP Law (Best Lawyers, 2017)
  • Best Lawyers recognised practitioner in Advertising Law, IP Law and Litigation (since 2009)


Her clients include FIFA, Deeper, Millo, Louis Vuitton, Droplet Genomics, Trafi, Tesonet, Triumph, Hugo Boss, Bic, Crocs, KrKA, Mattel, Nikon, Harley-Davidson,  Moet&Chandon, Longchamp, Baltymas, AGATA, and LATGA, to name a few.


Harvard Law School Executive Education, Leadership course.

Master’s degree of Laws, Vilnius University.

Professional Memberships

Member of the Lithuanian Bar Association.


Member of the Board of the Lithuanian Commercial Arbitration.


President of the Lithuanian Institute of Patent Attorneys.


She also holds positions in various industry-related organisations and working groups.

Recent experience
Recent news

Triniti Jurex Joins The American Chamber of Commerce in Lithuania

March 9, 2023

Doing business in Taiwan | CEE Investment Fund

September 12, 2022

Triniti Jurex is the first law firm in the Baltics to present its sustainability strategy

July 5, 2022

Vilija Viešūnaitė will represent Lithuania at the Institute of Professional Representatives before the European Patent Office

November 24, 2020

We invite to nominate for the Global Lithuanian Awards 2020

November 17, 2020

Vilija Viešūnaitė comments on the deregistration of the trademark due to non-use in the context of the L’Occitane dispute

October 26, 2020

Merged TRINITI JUREX to provide a free assessment to COVID-19 affected companies in business disputes

October 20, 2020

JUREX and TRINITI have merged, joining the ranks of market leaders and introducing a new approach to legal services

August 16, 2020

IP Star for TRINITI Managing Partner Vilija Viešūnaitė

May 13, 2020

European Patent Institute recognition

March 6, 2020

WTR 1000 recognition

February 19, 2020

Vilija Viešūnaitė was elected to ECTA Copyright and WIPO Link commitees

July 22, 2019

TRINITI partner Vilija Viešūnaitė elected as the president of the Institute of Lithuanian Patent Attorneys

May 8, 2019

Vilija Viešūnaitė is ranked as one of the best lawyers for intellectual property in Lithuania

April 17, 2019

TRINITI is listed among the best world IP specialists

December 1, 2017
The future in my specialty is

Intellectual property is the driving force of the future. AI, biotech, fintech, and startups are the future. The knowledge of today is not enough for tomorrow. I am ready to explore the business of tomorrow so that the future of my clients is secure.

This team is ready for your future. How can we help your business? Browse services

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