Extensions of time limits
Certain acts in the procedure concerning the application (e.g. communication of data or attachments, response to the notification on refusal and the like) have to be performed exactly within the prescribed time limit or the application will be rejected or refused, respectively.
In the case you cannot perform certain acts in the application procedure within the prescribed limit, and you have a justified reason therefore, you may request from the Office an extension of the time limit. So, before the expiration of the time limit concerned you have to file a request for the extension of a time limit, and pay procedural costs. You have to have in mind that such a request may be accepted or refused by the Office.
In the course of the procedure you may also use the institute comprising the reinstatement of rights, if your application has been rejected by the Office due to the fact that you failed to perform a certain act.