Januar Jahja & Partners (JJP) has been ranked Tier 1 in the Intellectual Property category for Indonesia in the Legal 500 Asia Pacific 2026 rankings. The firm is listed among the highest-ranked practices in the jurisdiction for its intellectual property work.

According to Legal 500, “Januar Jahja & Partners is home to a team of intellectual property specialists that receives mandates from international technology conglomerates, entertainment sector clients and domestic commercial entities.” The publication highlighted JJP’s work in securing the involuntary transfer of two Indonesian domain names to ETS, where the domain names were found to intentionally mislead consumers in relation to the TOEFL trademark. Legal 500 also identified BYD Company Limited and Warner Bros. Entertainment Co. as key clients of the firm.

In this edition, four members of the firm are recognized individually: Prudence Jahja (Managing Partner) as “Hall of Fame”; Andrew Diamond (Foreign IP Consultant) as “Leading Partner”; Juanitasari Winaga (IP Consultant) as “Next Generation Partner”; and Eva Dewi Kartika (Trademark Associate) as “Leading Associate”. The publication notes that “Prudence Jahja spearheads the team and has leveraged her wealth of disputes experience in building a strong track record in the litigation space.” Legal 500 also highlights Andrew Diamond’s focus on patent matters and his regular representation of clients before the Indonesian Appeals Commission. In addition, Juanitasari Winaga is recognized for her role in intellectual property portfolio management, including facilitating large-scale trademark transfers across different teams within international client operations. Eva Dewi Kartika and John Frederick are also noted as part of the firm’s intellectual property team.

The Legal 500 Asia Pacific 2026 rankings span 291 practice areas across 22 jurisdictions, featuring 4,770 firm rankings and 3,635 individual rankings, and include additional editorial insights on market trends and practice strengths across Asia Pacific. The rankings are based on independent research, including firm submissions, interviews with lawyers and feedback from clients and peers, with the aim of identifying leading practices and practitioners across the region. Click here to see the complete list.