1. You must submit the complete specification within the 12 months from the day of filling of the Provisional Specification; If you fail to do so, then your application will be considered as lapsed.
  2. You will lose the protection or priority for your application if you fail to file a complete patent specification within the 12 months.

Instead, you could file for a complete specification application directly by skipping the provisional specification applications altogether, only when your invention, Concept or Idea has the complete information without any obscurity or any other changes made to your product or process. So, the filing of the Provisional Application is Optional, but the filing of the Complete Specification is mandatory for your patent to be considered as registered.


The Contents which required for the drafting of the provisional patent applications:  

  • Title,
  • Field of invention,
  • Background,
  • Objects,
  • Brief description of drawings (if any),
  • Detailed description,
  • Advantages,
  • Drawings (if any),
  • Disclosure of biological material used (if any)


Forms required for Provisional Patent Application: – 

Form 1: – Application for the particulars of the Patent application

Form 2: – Application for the Provisional Specification

Form 26: – the Form of Authorization of the Patent Agent. It is required if you are filing the application through a patent agent.


The Contents which are required for the drafting of the complete patent applications after the provisional period: 

  •  Title,
  •  Field of invention,
  •  Background,
  •  Summary,
  •  Objects,
  •  Brief description of drawings,
  •  Detailed description,
  •  Advantages,
  •  Claims,
  •  Abstract and Drawings (if any),
  •  Disclosure of biological material used (if any)


Forms which are required for the Complete Patent Application after the Provisional Application: – 

Form 2: – Application for the Complete Specification

 Form 5: – Form of Declaration for Inventorship


Forms which are required for the Direct Complete Patent Application (without the application for a prior Provisional Application): – 

Form 1: – Application for the Grant of the Patent

Form 2: – Application for the Complete Specification

Form 3: – Form of Statement and Undertakings Under Section 8

Form 26: – Form for Authorization of the Patent Agent, this is required if your filing through a patent agent.

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