Ivan Kos

  • Head of Office - Croatia
  • Trademark Attorney
  • European Trademark and Design Attorney

With almost 15 years of experience in intellectual property, Ivan advises clients on all aspects of IP law, particularly on the clearance, prosecution and enforcement of trademarks in Croatia and other jurisdictions in the region. He advises clients on filing strategies using the national route and the Madrid System for international trademarks, and represents them before the EUIPO and the Croatian Intellectual Property Office and customs authorities. Ivan also handles domain name disputes.

Ivan recently successfully represented Ledo, a Croatian producer of ice cream and frozen food, before the EUIPO Board of Appeal in an opposition, based on the likelihood of confusion, against an EU trademark application by a German confectionery manufacturer. Ivan was also extensively involved in multi-jurisdictional clearance and prosecution projects for a multinational hospitality company, and advised a well-known furniture brand on trademark and copyright enforcement in Central and Eastern Europe.

Before joining PETOŠEVIĆ in 2008, Ivan practiced civil, commercial, labor, and administrative law in Zagreb.

Practice Areas


  • European Trademark and Design Attorney, 2013
  • Trademark Attorney, Croatia, 2011
  • State Bar Exam, Croatia, 2007


Native Croatian (similar to Bosnian, Macedonian, Montenegrin, Serbian and Slovenian), fluent English, working knowledge of German.


  • University of Zagreb, Croatia, LLB, 2004


  • "Absolute and Relative Grounds for Refusal of Trademarks in View of Legislation and Case Law," Seminar on Protection of Trademarks in Montenegro, Podgorica, Montenegro, March 3, 2011
  • "Damages in Croatian Trademark Law and Practice", PETOŠEVIĆ Webinar on Trademark Case Law in Eastern Europe and the CIS Countries, BrightTALK, June 5, 2013



  • International Trademark Association Committee Member, Enforcement Committee, 2014 - 2015 Term
  • International Trademark Association Committee Member, Opposition & Cancellation Standards & Procedures Subcommittee of the Enforcement Committee, 2012 – 2013 Term


  • Led out of Croatia by Ivan Kos and aided by a pervasive presence throughout Eastern Europe, boutique firm PETOŠEVIĆ is well-placed to advise domestic and international clients on their domestic and regional IP needs. Kos is particularly well regarded in relation to the clearance, prosecution and enforcement of trade marks. Legal 500 EMEA, 2022

  • Ivan Kos of PETOŠEVIĆ is adept at managing IP portfolios and handling trade mark infringement matters. He has further expertise in opposition proceedings. Chambers Europe 2022

  • In Croatia, the team is led by the venerable Ivan Kos. “I value Ivan’s professionalism; and thanks to his thoroughness, precision and responsiveness, our file was a notable success,” enthuses one satisfied client. “I will undoubtedly collaborate with Ivan on our upcoming projects in Croatia”. WTR 1000, 2022

  • Led from Croatia by Ivan Kos and also able to leverage the expertise of lawyers based throughout the CEE, IP boutique PETOŠEVIĆ is particularly well-positioned to advise international clients on trade mark clearance, protection and enforcement, both domestically and throughout the region. Legal 500 EMEA, 2021

  • Leading the charge is Ivan Kos, who ascends to the highly recommended tier this year on a wave of praise. “His thoroughness, speed and precision are highly appreciated, while the clarity and completeness of his reports are crucial to the successful outcome of a case.” WTR 1000, 2021

  • Leveraging its network of offices throughout Eastern Europe, boutique IP firm PETOŠEVIĆ is best known for its patent and trade mark prosecution work for international corporates. Team head Ivan Kos is recommended. Legal 500 EMEA, 2020

  • Led impeccably by stalwart of the profession Ivan Kos, the Croatian wing of this well-oiled machine is a force to be reckoned with. “A pragmatic and proactive practitioner, Kos consistently finds detailed solutions for clients.” WTR 1000, 2020

  • Leveraging its network of offices across Eastern Europe, as well as receiving referral work from law firms in other regions, boutique IP firm PETOŠEVIĆ excels at handling trade mark and patent prosecution and enforcement matters. Team head Ivan Kos is noted for his work on the clearance, maintenance, and enforcement of trade marks. Legal 500 EMEA, 2019

  • Commercially savvy attorneys in Zagreb give clients 24/7 care and ensure that work is completed on budget and on time, with no exceptions. Ivan Kos and Anamarija Stancic Petrovic embody this customer-oriented ethos. Kos toils around the clock to provide killer resolutions to even the most convoluted disputes. WTR 1000, 2019

  • The Croatian team excels at handling trade mark and patent prosecution work for international clients. The team also regularly handles trade mark infringement and unfair competition cases. Ivan Kos and Anamarija Stančić Petrović are recommended. Legal 500 EMEA, 2018