For a fresh period of limitation to begin from the time of acknowledgement of liability under section 18 of the Limitation Act, it is necessary that the acknowledgement must be
I. In writing
II. Made before expiration of the prescribed period
III. Signed by party against whom right is claimed

Section 18 of Limitation Act - Where, before the expiration of the prescribed period for a suit of application in respect of any property or right, an acknowledgment of liability in respect of such property or right has been made in writing signed by the party against whom such property or right is claimed, or by any person through whom he derives his title or liability, a fresh period of limitation shall be computed from the time when the acknowledgment was so signed