States how long the duty of confidentiality lasts.
In plain English
Says for how long the secret must be kept — during the relationship and for a period after (often 2–5 years; trade secrets can be indefinite). Open-ended duties are harder to enforce.
Relevant law
Indian Contract Act, 1872 (s.27)
Information Technology Act, 2000
Educational, not legal advice. Clause wording should be adapted to your specific facts. For high-stakes documents, have a qualified advocate review the drafting.