Indonesia's 2026 Patent Regulation Overhaul: Clearer Rules, Faster Examination

Indonesia's patent system just got a significant overhaul. In September 2026, the government enacted Ministry of Law Regulation No. 6, a comprehensive update to how patent applications move through the Directorate General of Intellectual Property. The regulation implements amendments from Law No. 65 of 2024 and introduces clearer procedural rules, faster examination pathways, and new international cooperation frameworks that reshape how inventors and companies protect their work in Southeast Asia's largest economy.

For anyone filing a patent in Indonesia, the filing requirements are now more explicit. Applications must include standard information about the applicant, inventor, and attorney, along with a detailed description, claims, abstract, and drawings where needed. Supporting documents—power of attorney, assignment of rights if the applicant isn't the inventor, and statements about genetic resources or traditional knowledge where applicable—are all specified. The regulation also standardizes how patent specifications should be structured, from the field of invention through to detailed descriptions and sequence listings. But there's a hard deadline that foreign applicants need to mark carefully: if your patent description is written in a language other than English, you must provide both English and Indonesian translations within 30 days of filing. There is no extension. This requirement alone has forced many international applicants to rethink their filing timelines.

The regulation also clarifies the timeline for Patent Cooperation Treaty applications entering Indonesia's national phase. The standard window is 31 months from the international filing date or earliest priority date. Limited extensions are available—up to three months or 12 months depending on circumstances—but applications that miss even the extended deadlines cannot be processed. For priority applications, there's a small safety valve: if you miss the standard 12-month priority deadline, you have an additional four months to file, though you'll pay an extra government fee and must still produce the priority document within 16 months of the priority date.

Where the regulation becomes genuinely useful is in examination speed. Applicants can now request expedited publication as early as three months after filing, subject to additional fees, though this doesn't apply to applications claiming priority. For simple patents, the publication period is just 14 days. Once formality requirements are met, applicants can request early substantive examination. The examiner is expected to issue a decision—either rejection or grant—within 12 months after publication ends. If an opposition is filed during the publication period, additional examination time may be added.

The most significant development, though, is Indonesia's expansion of the Patent Prosecution Highway, a mechanism that lets applicants leverage examination work already done by other patent offices to speed up their own applications. Indonesia already had PPH arrangements with Japan's Patent Office and South Korea's Intellectual Property Office. Now China has joined the network. Under the Indonesia-China agreement, signed between the Directorate General and China's National Intellectual Property Administration, applicants can request accelerated examination if a corresponding Chinese application contains at least one claim the Chinese office has determined to be patentable or allowable. The Chinese patent doesn't have to be granted—the claim just needs to be clearly identified as allowable in the latest office action. Indonesian claims must correspond to the allowable Chinese claims, meaning they have the same scope or are narrower. Applicants provide Chinese examination documents, allowable claims, cited references, and a claim correspondence table; Indonesian or English translations of Chinese office actions are acceptable. There's also a PCT-PPH route using international work products from the Chinese office.

Indonesia is signaling broader ambitions. The Directorate General has discussed PPH arrangements with Denmark's Patent and Trademark Office and has indicated commitment to developing cooperation with Russia's Rospatent. This expanding network reflects a deliberate policy direction: Indonesia is integrating its patent examination system with major innovation economies through work-sharing and mutual recognition of examination results.

The regulation also introduces substantive re-examination, a new procedural avenue that gives applicants another chance before appealing to the Patent Board of Appeal. Re-examination is available when a patent application is rejected, when corrections to the description, claims, or drawings are needed after grant, when there's a reconsideration of a grant decision, or when an application is withdrawn or deemed withdrawn. Most requests must be filed within nine months of the relevant notification or decision; withdrawal-related requests have a two-month deadline. Importantly, post-grant amendments through re-examination cannot expand the scope of patent protection. If re-examination doesn't resolve the matter, applicants can appeal to the Patent Board of Appeal within nine months, and if that decision is unsatisfactory, they can bring the case before a commercial court within three months.

For companies managing international patent portfolios, these changes create both opportunity and complexity. The clearer filing requirements reduce ambiguity, the accelerated examination options can shorten prosecution timelines, and the expanded PPH network means examination work in China, Japan, or South Korea can now directly benefit Indonesian applications. But the hard deadlines—especially the 30-day translation requirement and the 31-month PCT national phase window—demand careful planning. Indonesia is no longer a peripheral market in global patent strategy; it's becoming a node in an integrated examination network. That integration requires coordination across jurisdictions, not just filing and hoping.