It does not mean that your file is approved. It simply means that your meds had expired and new ones are required before a decision can be made.
You can add your spouse anytime before you land in Canada, even if the COPR has been issued. The earlier you do it the better since if a COPR is issued, and then you add your spouse, the COPR will have to be cancelled, the file will be reopened, and after your spouse is added, a new COPR will be issued, which takes longer than add a spouse when your application is under processing.