Januar Jahja & Partners

Prudence Jahja

Managing Partner    

Currently managing partner of JJP, Mrs. Prudence Jahja is widely regard as one of the leading intellectual property (IP) lawyers in Indonesia. As both a Registered IP Consultant and licensed attorney in Indonesia, her practice focuses both on trademark prosecution and litigation, as well as enforcement matters, including infringement matters and website takedowns. She also has experience advising on and prosecuting patent, industrial design, and copyright matters as well.

Mrs. Jahja’s work has been recognized by various outlets such as the Legal 500, WTR 1000, Managing IP/ IP Stars, and Chambers Asia Pacific. She has been named one of the Top 250 Women in IP and one of Indonesia’s Top 100 Lawyers. For a complete list of all of her accolades and recognitions, please see our Testimonials page.

Mrs. Jahja holds a bachelor degree in Economic and Business Law from Atma Jaya University in Jakarta, Indonesia and earned a Master’s Degree in Intellectual Property and Competition Law from the Munich Intellectual Property Law Center (MIPLC) at the Max Planck Institute in Munich, Germany. As part of her studies in Germany, Mrs. Jahja interned at the German Intellectual Property Law firm of Preu Bohlig & Partner. After receiving her LL.M, she worked in the New York office of the Intellectual Property firm Frommer Lawrence & Haug, LLP.

She also served as a judicial intern for the Chief Judge of the U.S. Court of Appeals for the Federal Circuit in Washington, D.C. Mrs. Jahja is licensed to practice law in Indonesia (PERADI), as well as before the Indonesian Intellectual Property Office.

Publications:

Languages: Indonesian, English.

Juanitasari Winaga

IP Consultant

Ms. Winaga’s practice as an IP Consultant focuses primarily on trademark prosecution for both international and domestic clients. Prior to joining JJP, Ms. Winaga worked in the education and food and beverage (F&B) sectors for more than 10 years, most recently with a large Indonesian food manufacturing company. She holds a bachelor degree in Education from Atma Jaya University and a Master’s Degree in Business Management from Bina Nusantara University (Binus). Registered as an IP consultant with the Government of Indonesia, Ms. Winaga is licensed to practice before the Indonesian Directorate General of Intellectual Property (DGIP).

Languages: Indonesian, English, Chinese (Mandarin).

Rita Wihardja

Senior IP Consultant

Ms. Wihardja concentrates her practice on copyright, trademark, and industrial design. Ms. Wihardja has particular expertise in client counseling related to Intellectual Property matters before Indonesian government bodies. She is registered to practice before the Indonesian Patent and Trademark Office.

Languages: Indonesian and English

Andrew Diamond

Foreign IP Consultant

Andrew Diamond is recognized as one of the leading foreign IP consultants in Indonesia. A N.Y. licensed attorney with an LL.M in Intellectual Property and Technology Law, Mr. Diamond currently leads the JJP Patent Team, while also advising foreign clients on litigation and enforcement strategy in Indonesia.

Mr. Diamond’s work has been recognized by various outlets such as the Legal 500, WTR 1000, Managing IP/ IP StarsIAM Patent 1000, and Chambers Asia Pacific. He has been named a Trademark Star by Managing IP and recognized as a leading patent professional by IAM 1000 (2020). He has also been named an ASEAN IPR SME Helpdesk “Expert”. For a complete list of all his accolades and recognitions, please see our Testimonials page.

Prior to joining Januar Jahja & Partners, Mr. Diamond worked as an associate in the New York office of Venable LLP, an AmLaw 100 firm. While there, Mr. Diamond worked in the Commercial Litigation Group, where his practice focused on assisting clients in class action and securities fraud defense, as well as compliance with the Foreign Corrupt Practices Act (FCPA). Mr. Diamond has a J.D. from Brooklyn Law School and an LL.M in Intellectual Property and Technology Law from the National University of Singapore (NUS). He is licensed to practice law in the State of New York.

Speaking Engagements:

Publications:

Languages: English, Indonesian.

Wulan Mogesmiranti

Patent Attorney

Mrs. Mogesmiranti is a Patent Attorney focusing on both Patent and Industrial Design matters. Prior to joining JJP, she worked in the Indonesian office of a multi-national IP firm for more than seven years. She has extensive experience working with clients from wide range of sectors, including but not limited pharmaceutical, chemical, biological, and technology, handling matters on their behalf ranging from conducting patentability searches to providing draft responses to Office Actions, as well as prosecution of patent and industrial design applications from the pre-filing stage through to grant. She is also familiar with IP enforcement, specifically in the patent and industrial design areas.

Mrs. Mogesmiranti obtained her Bachelor of Law degree from the University of Pelita Harapan-Lippo Karawaci in 2010, majoring in Business Law. She is licensed to practice law in Indonesia by the Association of Indonesian Advocates (PERADI).

Languages: Indonesian, English.

Mitha Fuji Adiati

Patent Specialist

Ms. Mitha handles patent prosecution matters at JJP, specializing in the substantive examination of patent applications. Prior to joining JJP, she worked for another IP firm in Indonesia for more than three years as a patent specialist to analyze patentability, report and respond to Office Actions, review patent specifications in the chemical, pharmaceutical, biological, and others technical fields, as well as to generally advise clients on patent prosecution matters.

Ms. Mitha obtained her Bachelor’s Degree in Chemical Engineering from the University of Sultan Ageng Tirtayasa in 2015.

Languages: Indonesian, English.

Rossi Andriyanti

Patent Specialist

Ms. Andriyanti assists with the substantive examination of patent applications, such as analyzing the patentability of inventions, reporting and responding to Office Actions, reviewing patent specifications in the pharmaceutical, chemical, biological, and other technical fields, as well as providing updated information to clients on patent prosecution matters.

Prior to joining JJP, she worked for another IP firm in Indonesia for more than two years, specializing in the substantive examination of patent applications. Ms. Andriyanti obtained her Bachelor’s Degree from Pancasila University in 2018, majoring in Pharmacy.

Languages: Indonesian, English.

Kerin Marbun

Patent Prosecution Specialist

Ms. Marbun assists with patent prosecution at JJP, focusing on the substantive examination of patent applications, including reporting and responding to Office Actions as well as assisting with the review of patent specifications and other matters related to prosecution. Prior to joining JJP, she worked for another IP firm in Indonesia for three years handling various patent prosecution matters.

Ms. Marbun obtained her Bachelor’s degree in Architecture Engineering from the University of Sebelas Maret in 2015.

Languages: Indonesian, English

Eva Dewi Kartika

Associate

As an associate, Ms. Kartika handles both contentious and non-contentious IP matters. Prior to joining JJP, she worked at two full service law firms as an assistant lawyer/associate. She obtained her Bachelor’s Degree in Law from Tarumanagara University and is currently pursuing her Master’s in Intellectual Property Law at the University of Indonesia.

Ms. Kartika’s practice focuses on IP litigation and other contentious matters, such as infringement actions, online takedowns, and warning letters, as well as non-contentious matters such as trademark prosecution, oppositions, and appeals. Ms. Kartika is licensed to practice law in Indonesia.

Languages: Indonesian, English

John L. Frederick

Associate

As an Associate, Mr. Frederick handles an extensive range of IP work for both contentious and non-contentious matters, with a primary focus on IP Litigation and enforcement matters, such as infringement and cancellation actions, online takedowns, and demand letters.

Prior to joining JJP, Mr. Frederick worked for another IP firm in Indonesia for approximately seven years handling numerous litigation cases, such as trademark cancellation and trademark infringement actions, among others. He obtained both his Bachelor Degree in Law and his Master Degree in Business Law from Universitas Tarumanagara in Jakarta, Indonesia. He is licensed to practice law in Indonesia (PERADI).

Languages: Indonesian, English.

M. Alif Rachim

Associate

Mr. Rachim assists with both trademark prosecution, including responses against preliminary rejections, rebuttals, and appeals as well as contentious matters such as trademark oppositions. He obtained his Bachelor’s Degree in Law from Padjadjaran University, Bandung in 2017, where he also participated in the International Moot Court competition.

Prior to joining JJP, he experienced working in several law firms, among others, Hadiputranto, Hadinoto & Partners (member firm of Baker & Mckenzie) as intern in their Intellectual Property practice group, where he was involved in many substantial matters such as IP enforcement towards copyright infringement and counterfeit products, trademark prosecution, and research.

Languages: Indonesian, English

Fabiola Rossy

Associate

Mrs. Rossy handles trademark prosecution and portfolio management as well as assisting clients with contentious matters such as trademark oppositions and IP transactions. 

Prior to joining JJP, she worked in the dispute resolution team at a leading Indonesian commercial law firm and later worked at the Indonesian Creative Economy Agency (BEKRAF), helping creative entrepreneurs understand and protect their IP. 

She obtained her Bachelor’s Degree in Law from Universitas Indonesia in 2015, and earned her Master of Laws from the University of California Berkeley, majoring in law and technology in 2020. 

Publications:

Languages: Indonesian, English.

Mohamad Alen Aliansyah

Junior Associate

Mr. Mohamad Alen Aliansyah handles both contentious and non-contentious trademark matters.  Prior to joining JJP, he worked for another Indonesian IP Firm. He has been involved in numerous IP-related matters, such as trademark cancellation and infringement cases, warning letters, oppositions, objections against preliminary rejections, rebuttals, and appeals.

Mr. Aliansyah obtained his Bachelor’s Degree in Law from UIN Jakarta and his Master’s Degree in Law from the University of Indonesia. He has passed the Indonesian bar exam (PERADI) and expects to be called to the bar soon.

Publications:

  • “Normative Review of the Legal Standing of the National Collective Management Institution as a State Auxiliary Organ based on the Government Regulation No. 56 of 2021 concerning Song and/or Music Copyright Royalties Management”, Journal Dialogia Iuridica  Vol. 13 No. 2, April 2022, available at: https://journal.maranatha.edu/index.php/dialogia/article/view/4215/2125.

Languages: Indonesian, English.

Marissa Ayu Anggraeni

Junior Associate

Ms. Anggraeni assists various clients in different industries on IP-related matters, including trademark searches, prosecution, renewals, and oppositions. Before joining JJP, she worked as an intern in a local law firm.

She obtained her Bachelor’s Degree in Law from Brawijaya University in 2019, focusing in Business Law, where she was involved in Asian Law Students’ Association (ALSA) LC UB and also volunteered for several social projects.

Languages: Indonesian, English.

Saskia Kusumawardani

Junior Associate

Ms. Kusumawardani assists with both contentious and non-contentious IP matters, such as trademark prosecution, oppositions, objections against preliminary rejections, rebuttals, and appeals, as well as domain name disputes.

Ms. Kusumawardani obtained her Bachelor’s Degree in Law from Padjadjaran University in 2020, focusing on Economy and Cyber Law. She also participated in the National Moot Court Competition on Private Law at Gadjah Mada University and was an active member of Moot Court Society, Christian Students’ Fellowship, and Asian Law Students’ Association (ALSA).

Publications:

  • “GOOD CORPORATE GOVERNANCE PRINCIPLES ON INTERNET INTERMEDIARY COMPANIES IN PROTECTING THE PRIVACY OF PERSONAL DATA IN INDONESIA”, Yustisia Volume 9 Number 1 (January-April 2020), Sebelas Maret University, available at: https://jurnal.uns.ac.id/yustisia/article/view/39683.

Languages: Indonesian, English.

    Januar Jahja – in memoriam

    Founding Partner

    Mr. Jahja founded Januar Jahja and Partners in 1986 and was the driving force behind the firm for more than 30 years until his passing in 2017. A ‘lawyer’s lawyer’, he was ferociously dedicated to his clients and to the law. He is responsible for many of the preeminent court cases in Indonesian IP history at all levels of the court system, including the Indonesian Supreme Court. He leaves behind a thriving firm led by his daughter, Prudence Jahja, and a legacy that continues on.