Provisional Application

Provisional Application - Process, Procedure, Document Required, Fees, Eligibility, Duration

Following the submission of a provisional specification, the patent office assigns a patent filing date to the invention. The inventor has 12 months from the date of filing a provisional specification to develop the invention and submit the complete specification. The patent application will be deemed abandoned if the patent specification is not filed within 12 months.
After the provisional patent specification has been filed, the inventor can use the ‘Patent Pending’ or ‘Patent Applied’ tag. 
 

When the applicant reaches a point in their research and development work where it can be published on paper but is not a finished invention, they can produce a description of the invention a provisional specification, and submit it to the patent office to obtain the invention's priority date.
Because the patent is incomplete, it is referred to as a Provisional Patent. The provisional specification is filed if the applicant believes that the invention has progressed to the point where it can be disclosed on paper but has not yet reached the final stage.
An applicant has 12 months to submit the complete specifications. If the complete specification is not completed within 12 months after the provisional specification filing date, the patent application is deemed abandoned.
The Indian Patent Act of 1970 governs India's patent laws. It deals with patent registration, renewal, transfer, and protection in India.