You may be eligible to appeal your Canadian Immigration Application Refusal to the Federal Court of Canada within a certain period after you were notified of the refusal by Canada Immigration

You may be eligible to appeal your Canadian Immigration Application Refusal to the Immigration Adjudication Division (IAD) within a certain period of after your application was refused by Canada Immigration.

You may be able to make a request for Restoration to the Case Processing Centre (CPC) after being notified if the refusal.

However, in order for these remedies to be available, you need to act fast as there strict appeal deadlines that must be followed in order to secure your rights.