Erna L. Kusoy & Co.

Welcome to Erna L. Kusoy & Co., a boutique intellectual property (IP) law firm offering advice and consultation on the full range of IP services in Indonesia.

Led by founder and partner, Erna L. Kusoy, a leading registered IP Consultant and IP practitioner and former partner and head of the IP Department at Hadiputranto, Hadinoto & Partners (HHP) in Jakarta, this firm offers pragmatic advice on all legal and business issues relating to registering, maintaining and protecting intellectual property rights in Indonesia.

About Us

Erna L. Kusoy is the founding partner of Erna L. Kusoy & Co. She has more than 20 years’ experience advising domestic and international clients and handling Intellectual Property matters in the complex Indonesian market.

She started her professional career at the IP law firms Biro Oktroi Roosseno and Amroos & Partners before joining HHP in 1989. From then until mid-2008 she was responsible for developing and managing what became an exceptionally successful IP practice.

Over the years as an IP expert, Ms Kusoy, has collected a long list of IP awards and accolades, among others, individual recognition as an IP Leading Lawyer for the years 2002 to 2008, from IP ASIA. These accolades reflect recognition of her work from clients and peers alike, as well as her very substantial experience and achievements in the IP area.


Professional qualifications

Erna L. Kusoy obtained her Law degree at the University of Indonesia (guided course). She holds an advocate license and a patent consultant license. She is also a registered IP Consultant, appointed in 2006 by the Indonesian Ministry of Law and Human Rights.

Professional affiliations

APAA (Asian Patent Attorneys Association) Indonesia Group
  • Vice President of APAA of Indonesia (2009)
  • Trademark Committee member 2009
  • Ex-President (1997-2000)
AIPPI (International Association for the Protection of Intellectual Property Right) Indonesia Group
  • Ex-President (2003-April 2009)
  • Trademark Committee member 2009
AIPA (ASEAN Intellectual Property Association)
  • Ex-Council member
INTA, including: IAR Task Force for the TM Editorial Board, and Asia Pacific Subcommittee of the International Amicus
  • Committee
  • Ex-Member
IIPS (Indonesian Intellectual Property Society)
  • Founder member
AKHKI (Indonesian Intellectual Property Attorney Association)
  • Member of the Supervisory Commission (2013-2016)

Our Service

Indonesia’s complex IP laws and regulations can seem intimidating to the untrained eye. However, with a long history of advising clients on IP matters, Ms Kusoy is ideally placed to offer pragmatic legal advice and consultation on all manner of Intellectual Property law and related issues in Indonesia.

Below is a summary of the types of IP matter on which we advise:

  • Trademarks
  • Patents
  • Copyrights
  • Industrial Designs
  • Litigation
  • Investigation
  • Research
  • Advisory
  • Negotiations
  • IP Agreements
  • Auditing IP portfolios
  • IP commercial documents
  • Translations
  • Problem Solving

Contact Us

Erna L. Kusoy & Co.

Office Address:
Talavera Office Park, 28th floor
Jl. TB. Simatupang Kav. 22-26
Phone: +62-21-7599-9906
Fax: +62-21-7599-9888
Jakarta Selatan 12430, Indonesia
Mailing Address:
Graha Mas Fatmawati Blok A. No. 27-28
Jl. R.S. Fatmawati No. 71, Cipete Utara
Jakarta Selatan 12150, Indonesia
Contact person : Erna L. Kusoy, SH.
Mobile : +62-8158007511
email :