Confidentiality agreement/clause without time frame

Dear Premlata,

The Confidentiality clause cannot be made perpetual even if it is mentioned in the agreement as perpetual. If time period is not mentioned then its effectiveness ends with the terms of the agreement. But in case of special circumstances/facts where the employees had access to sensitive informations of the company, the effectiveness of confidentiality clause gets automatically extended for term beyond the terms of hte contract. Extension is not unreasonable and many things depends upon the facts.