Here it says something else, I am confused.
Renewal of Passport [TABLE="class: styleTextNormal"]
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[TD] Under Passport & Visa Manual 2006, there is no restriction for renewal of passport before its expiry. Passport having full validity of 5/10 years can be issued to the applicants even if existing passport has not completed its validity. However, a statement mentioning the reason for obtaining a new passport before its expiry may be obtained from the applicant. The existing passport may be cancelled and returned to the applicant. All other formalities may also be completed.
Directorate General of Immigration & Passports, Ministry of Interior, Government of Pakistan
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