Article 20

A patent shall be granted on the basis of an application.

Article 21

Each application may be filed for one invention only, or a number of inventions that constitute a unity of invention

Article 22

A patent application shall be filed with the payment of a fee to the Directorate General.

Article 23

1. If an application is filed by a person other than the inventor, the application must be furnished with a statement with adequate supporting evidence that he is entitled to the said invention
2. The inventor may examine the application form filed by a person other than the inventor as referred to in paragraph (1) and may at his own expense request a copy of documents of said application.

Article 24

1. An application shall be filed at the Directorate General in writing in the Indonesian Language
2. The application form must contain:
   1. The date, month and year of application,
   2. Clear and full address of the applicant,
   3. Full name and nationality of the inventor,
   4. Where the application is filed by a proxy, full name and address of the proxy concerned,
   5. A special power of attorney, where the application is filed by a proxy,
   6. A request that a patent be granted,
   7. The title of invention,
   8. A claim(s) implied in the invention,
   9. A written description of the invention which contains a complete information on the ways of implementing the invention,
   10. Drawings mentioned in the description required for clarification,
   11. An abstract regarding the invention.
3. Further provisions regarding the procedure for filing of an application shall be regulated by a Government Regulation.