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Under Section 54(4) of the Patents Act, 1970, a patent of addition:

Section 54(4) of the Patents Act, 1970 expressly bars grant of a patent of addition before the main patent itself is granted, since it depends on and runs with that main…

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Under Section 54(4) of the Patents Act, 1970, a patent of addition:

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Correct answer C

Section 54(4) of the Patents Act, 1970 expressly bars grant of a patent of addition before the main patent itself is granted, since it depends on and runs with that main patent. It cannot pre-date or coincide before the main grant, and it cannot exist without a main patent at all.

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