Mihajlo has 30 years of experience in the field of intellectual property (IP), with a strong focus on the wider Balkan region and Eastern Europe. He has advised and represented numerous multinational companies across a range of industries, particularly in complex trademark and patent litigation, and enforcement matters. His work regularly involves court representation, negotiating with infringers, and close cooperation with customs, police, and market inspectorate authorities.

Throughout his career, Mihajlo has contributed to numerous capacity-building initiatives. He was part of a U.S. Trade and Development Agency (USTDA) project aimed at improving the structure and processes of the Serbian Intellectual Property Office (2007–2008), and later participated in an EU-funded project to strengthen the Institute for Intellectual Property of Bosnia and Herzegovina (2015).

Mihajlo is an active member of several international intellectual property organizations. He is a member of INTA, FICPI, AIPPI, and member of the Belgrade Bar Association.

He is also a Member of the Council of the European Patent Institute (EPI) since 2014, and he is on EPI’s Litigation Committee.

Mihajlo has continuously been recognized by the IP community as an expert in this field. Various ranking organizations for the legal industry, such as Chambers & Partners, Legal 500, WTR 1000 rankings, Who’s Who Legal have ranked him in the highest ranking tiers for his professional achievements for almost 20 years.

He regularly represents at industry conferences and professional meetings. He also delivers lectures and training sessions on various IP-related topics.

Mihajlo contributed the chapter on Serbia to the ‘’Patent Enforcement in Europe” guide published by the European Patent Office (EPO).  “Patent Enforcement in Europe” is a compilation of country profiles which provide comprehensive insight into national enforcement practices and procedures in the European Patent Convention (EPC) contracting states.

Before establishing VP-IP Zatezalo, Krnetic & Partners in 2025, Mihajlo worked at two prominent intellectual property firms, Zivko Mijatovic & Partners, and CWB/ex-Petosevic, for almost 30 years.