Yes, it is possible to get an early filing date in India by filing a provisional specification. However, this is applicable for non-convention applications only. Also, you must follow it up with a complete specification within 12 months of filing. Provisional specifications cannot be filed for divisional, Convention or PCT national phase applications.
While filing the Complete specification, make sure to clearly specify the application number of the provisional application. With this reference, your complete application will receive an early filing date in India. Basically, your application will have the filing date of the provisional application.
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Can I access the documents in the file of an Indian patent application?
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Can I submit third-party observations on an Indian patent application?
How can I challenge a granted patent in India?
Also, do make sure that you check out this free e-book: A Quick Guide to Patents. Basically, it deals with basics of patent procedures.
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