Is this for someone who is applying for permanent residency through family class sponsorship? You don't apply for the CSQ until CIC acknowledges receipt of the application packet for sponsorship and PR, and the CSQ is part of the process of getting the sponsor approved. I don't believe the PR applicant has implied status at any point in that process. I've been looking at the CIC website, and this is their explanation of implied status:
Implied status
If a visitor, student or temporary worker applies to extend their status, prior to the expiry of that status, they may legally remain in Canada until a decision is made on the application. In this situation, the person has implied status.
I'm not able to find anything on a PR application ever granting implied status.