As per provisions of CPC, the time limit for filing written statement is 120 days (30 days following service of summons + 90 days grace period). This restriction is solely applicable to commercial cases.
CIVIL PROCEDURE CODE, 1908 (CENTRAL ACT NO. 5 OF 1908) (AMENDMENT ACT OF 2002) -- ORDER 8 RULE 1 -- What is the maximum time permissible to file written statement after the expiry of 30 days -- Whether Court has power to extend time beyond 30 days. HELD -- Power to grant extension for filing the written statement stands exhausted no sooner the Court grants 60 days beyond the initial period of 30 days regardless whether the extension is granted is one go or in smaller bits from time to time. After the period of 90 days, the defendant looses the right to file the written statement. Beyond that the Court has no power to grant time beyond 90 days for filing written statement from the date of service of summons.
It is to be noticed that if the Written Statement is not filed, the Court is required to pronounce judgment against the defendant. The words "against him" are to be found in Rule 10 of Order 9 which obviously means that the judgment will be pronounced against the defendant.
In this case as the petition under Order 7 rule 11 had been disposed, the court may reckon the limitation from the date of disposal of the said petition for allowing the time period to file the written statement.