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Joyada Siallagan is the founding partner of JSP Law firm and Managing Partners. His License an advocate, receiver, administrator, mediator, bankruptcy lawyer and Property rights consultant. He is also tax attorney to do litigation: Audit, objection, appeal and judicial review. He Is President IKHAPI (Tax Consultant and Tax Advocate Association).

He has many advice clients on debt restructuring and Bankruptcy/ insolvency matters; He is a Candidate Doctoral Bankruptcy Law. He worked for several years in Legal, Tax and Auditing Firm Big Five, until has held Leader Team.

In the field of tax, he also has experience as a trainer of tax in many courses, as visiting lecturer for some universities and tax instructor for many tax consultant firms. To develop his knowledge in tax, audit and accounting, he involved in many training courses and seminars such as Brevet A, B, and C powered by Directorate of General Taxation.

Outside of the office, Joyada Siallagan is actively in golf community. He is founder and board of committee golf associations.


Jean Baptiste Patoir, legal adviser with emphasis on:

  • Energy, Water, infrastructure: Project Finance - Concession contracts; 
  • Mining: structured trade finance, tax litigation;
  • Industry: Fund raising - Exit Strategies;
  • Public sector: PPP - Legislative Review & Drafting - Public procurement;

Over 25 years’ experience Jean-baptiste has combined his significant position in

- International Private Project Financings;
- Public-Private Partnerships and Public finance;
- Legislative review and drafting.
  • Through key positions worldwide in investment banking and project finance he has combined an unique expertise in Risk analysis and feasibility assessment of large projects, loans syndication, Guarantees and contingent liabilities, assistance to sponsors and equity investors, Hedging, and taxation issues.
  • Jean-baptiste specializes in project finance, PPPs, and privatizations, both in the developing and developed world. He has experienced in legal transition work, legislative drafting and assistance to governments, IFIs, lenders, from initial feasibility analysis to international bidding processes and financial closings. He has advised international financial institutions, concession companies, operators and bidding consortia in infrastructure projects notably in energy, power generation and transportation, hospitals, water treatment, river basin management, river port, industrial EPZ estates, airports, and railways. 
  • Jean-baptiste advises national and local governments, other authorities granting concessions or setting up Public-Private Partnerships, and also drafts laws and regulations at national and sub-national levels with emphasis in Economic, Finance and Public Finance matters. He assists sponsors and equity investors in large scale projects in Energy and Mining sectors from start-up due diligence review to support in implementing Project Finance schemes and production of contractual arrangements. He advises Indonesia small size mining companies in the field of structured trade finance.


DR. Nurwidiatmo, SH, MH, MM, a young professional, who in the age of 40 has reached the highest degree in the world of Education (Professor, holder of two Master's degrees and two doctorate degrees (each field of management and law), in addition to experience in handling legal issues is also an expert in the field of management, is evidenced in question had joined the Indofood Group and the last become General Manager of a State Owned good standing. In 2002 Prof. Nurwidiatmo DR, SH, MM, MH, blessed title of "The Best Lawyer of the Year", which honors were not given to just anyone and not given every year. This title is only given to those elected.

In 2009, Nurwidiatmo, elected to become one of the Chairman of the Advocates Association of Attorneys. It shows though relatively new as an Advocate Counselor, but its existence was well respected and regarded by colleagues / profession.

Nurwidiatmo, do not forget to also donate Sciences, both in the field of Management, as well as in the field of Law. He was active as Chairman of the Graduate Program Master of Law at the University Jayabaya Jakarta, as well as Chairman of the Program Master of Notary. There was also a lecturer on Private Higher Education in Jakarta and Bandung.


Heru Setiyono, in 1993 joined as a Partner in Hata International Legal Counselors, as Legal Advisor. Never follow the General Insurance Education Insurance Institute in Jakarta, as well as practitioners in the field of General Insurance, and has followed education Patent Consultant at the University of Indonesia in 1993, and Intellectual Property Practitioner since 1993 in registration handling Patent, Trademark, Copyright, Industrial Design and completion in case handling/dispute brands, copyrights, patents, industrial designs (intellectual property rights) in various regions, and handle Criminal, Civil, Administrative and Commercial case, currently he is also a registered mediator in the Supreme Court, and Advocates Peradi members.



Sangap Jonathanis, he is a Lawyer and Tax Consultant. experience as a Legal Audit, Legal Drafting/Contract, as well as the Legal  Advisor in many companies, also handles matters of Civil Law,  and Commerce





Mahmudil Anwar, legal practitioner and advocate since 1989, experienced in handling a variety of Criminal, Civil, Administrative, Commercial, and Bankruptcy.





Jose Andreawan, Law degree and Master in Law. Have obtained the certification in the field of ABC Tax Brevet (Tax Attorney) and professional mediator. His Education completed Capital Market and Legal Consultants in Capital Market, as well as curator of education and board (Receiver and Administrator in Bankruptcy), now he is candidate Phd of business law.




Landong MT. Nadeak, Experts in the field of specialization Boating Law, Maritime Law, Customs, Immigration, Quarantine port, to check the ship's expertise around the world who are already enrolled in the International Maritime Organization (IMO), was able to check on Port State Control Certificate ship registered in the Tokyo MOU and provide solutions for ships - ships that have problems with Port State Control Officers, can provide a solution for people who feel disadvantaged in the loading and unloading of goods as well as a mediator registered with the Supreme Court.