ABNR Counsellors at Law is regularly called upon by leading multinationals across a broad spectrum of sectors for post-merger notification requirements. Outside of this work, the firm also handles filings and investigations related to antitrust violations, compliance guidance, and  business structuring to avoid anti-competitive practices. Gustaaf Reerink jointly leads the group alongside Chandrawati Dewi, who has an extensive foreign-to-foreign deal sheet and routinely provides in-house compliance training to clients. Agus Ahadi Deradjat is a port of call to corporates active in the TMT sector, and is noted for his merger control and investigations work. Bilal Anwari is a key figure in the practice for contentious matters.

A team lauded as ‘technically very sound‘, ‘knowledgeable’, and offering ‘excellent judgement’, Assegaf Hamzah & Partners serves a host of clients on contentious and non-contentious matters, including post-merger notifications, antitrust reviews and KKPU investigations and appeals. Beyond his experience acting in cartel cases and investigations, team head HMBC Rikrik Rizkiyana is well equipped to advise on significant merger clearances and competition compliance. Co-head Farid Nasution ‘provides first class deliverables on par with any first-tier international firms’, while Asep Ridwan and Vovo Iswanto are noted for the breadth of their litigation work. Albert Boy Situmorang, promoted to partner in April 2023, also comes recommended.

Hiswara Bunjamin & Tandjung in association with Herbert Smith Freehills remains active on behalf of multinationals and investment firms seeking advice in connection with post-merger notification filings, antitrust compliance, allegations and investigations, and in-house training. Helming the team is Sakurayuki, whose practice largely concentrates on the merger control aspects of acquisitions and is well placed to counsel on deals in the telecoms, infrastructure and hospitality industries. Co-head Randitya Adiguna, who has a similarly focused practice, has been a highly active supporting presence across a range of mandates.

Featuring ‘experienced competition lawyers and ex-KPPU officers that are able to provide practical and actionable guidance’, Ginting & Reksodiputro in association with A&O Shearman possesses a client roster that includes both continental and global corporations across the financial services, infrastructure, and healthcare sectors, amongst others. A significant portion of the firm’s work has a cross-border element, involving regular collaboration with colleagues in Singapore and Sydney. Harun Reksodiputro leads the practice and acts on both contentious and non-contentious mandates, notably merger control filings and and KPPU investigations. Sam Samid has a varied book of work that includes antitrust filings, KPPU reporting, and compliance training.

Praised for its ability to ‘advise multinational corporations through difficult competition legal issues’, Hadiputranto, Hadinoto & Partners handles a mix of contentious and non-contentious instructions for clients, including merging filings, responding to KPPU investigations and dawn raids, and conducting legal reviews of business operations. Mita Djajadiredja leads the team and focuses on M&A in the TMT sector. Co-head Dyah Paramita has a strong track record in regulatory proceedings and defences before the KPPU as well as merger control filings and in-house compliance training. Mochamad Fachri  left the firm in 2024.

SSEK Law Firm’s ‘robust understanding of both local and international antitrust laws’ ensures it is routinely sought out by both multinationals and public bodies for legal advice. The team adeptly handles merger filings, compliance and regulatory reviews, and civil and criminal antitrust litigation cases. Group lead Stephen Igor Warokka is praised for his ‘excellent knowledge of the Indonesian competition laws’ and is active across the full spectrum of practice mandates. Michael S Carl and Juven Renaldi chiefly focus on merger filings. Ira Eddymurthy is ‘particularly noteworthy for her extensive experience in high-profile mergers and acquisitions’.

TNB & Partners in association with Norton Rose Fulbright advises on competition law, merger control and foreign direct investment of multi-billion dollar cross-border transactions, often working closely with its counterparts in Hong Kong. The firm also possesses an extensive compliance offering and has a deep understanding of regulations within Indonesia and overseas. Team lead and office managing partner Kresna Panggabean, whose practice straddles both contentious and non-contentious mandates, acts for clients across a multitude of sectors and has a strong understanding of the regulatory landscape. Jeremiah Purba has been a key supporting presence on a number of client instructions.

Working with a global portfolio of clients spanning the tech, trading, financial services, automotive and aviation industries, Walalangi & Partners in association with Nishimura & Asahi’s comprehensive antitrust and competition offering encompasses merger report filings, compliance and advisory work, and operational transfer reviews. Team head Miriam Andreta advises on antitrust issues and merger notification processes. Luky I. Walalangi is a key adviser to clients such as Mitsubishi and Mitsui & Co, and has a strong track record on cross-border merger reports. Putri Bening Larasati also comes recommended.

Makarim & Taira S. handles a variety of instructions from clients, including merger filings, compliance and regulatory reviews, internal training, and responses to investigations of alleged misconducted misconduct. Budhy Apriastuti Evita supports on both merger filings and antitrust counsel mandates, while Made Susanti is a further port of call for investigations and litigation cases. Lia Alizia left the firm in October 2024.

Representing clients on a range of domestic and cross-border transactions, Soemadipradja & Taher is adept at handling post-merger notification filings for a range of multinationals, as well as advising on potential competition and antitrust violations. The firm also assists with KPPU investigations and proceedings. Spearheading the practice is Verry Iskander, who leverages previous in-house experience at the KPPU to comprehensively advise clients across a range of competition and antitrust matters. Valerie Allen Ghazian Soekarno also comes recommended.