Unlock Advanced Research with PRISMAI Integrated with over 4 crore judgments and laws — designed for legal practitioners, researchers, students and institutions - Know your Kanoon - Doc Gen Hub - Counter Argument - Case Predict AI - Talk with IK Doc - ... Upgrade to Premium Document Options Get in PDF Print it! [Cites 0, Cited by 12] [Section 21] [Entire Act] Union of India - Subsection Section 21(4) in The Trade Marks Act, 1999 (4)Any evidence upon which the opponent and the applicant may rely shall be submitted in the prescribed manner and within the prescribed time to the Registrar, and the Registrar shall give an opportunity to them to be heard, if they so desire.