Step 1: Provision for written statement.
Under Order 8, Rule 1 of the CPC, the defendant is required to file a written statement within 30 days of receiving summons.
Step 2: Extension limit.
However, the court may extend the time up to a maximum of 90 days if it finds valid reasons for the delay.
Step 3: Conclusion.
Hence, the maximum permissible time limit for filing a written statement is 90 days.