In Indonesia, third-parties may file a request for post-grant opposition before a Patent Appeal Commission. The Commission is not part of the Patent Office but is an independent commission under the Ministry of Law.
The request for post-grant opposition should be filed within nine months from patent grant. Detailed reasons and evidence for opposition should accompany the request. The Commission will either reject the request, partially grant the request (e.g. direct that a claim be cancelled) or fully grant the request (i.e. revoke the patent). Read more