Where a trade mark is registered in breach of sub-section (1) of section 9, it shall not be declared invalid if, in consequence of the use which has been made of it, it has after registration and before commencement of any legal proceedings challenging the validity of such registration, acquired a distinctive character in relation to the goods or services for which it is registered.
India Code, Government of India. Text fetched 10 Oct 2026. Check the linked official text and subsequent notifications when applying a provision.