fee to accompany any request to revive. (3) The Director shall provide, by regulation, for extensions of time to respond to the examiner for any time period under paragraph (2) that is less than six months. The Director must allow the applicant to obtain extensions of time to reply or amend aggregating six months from the date of notification under paragraph (1) when the applicant so requests. However, the Director may set by regulation the time for individual periods of extension, and prescribe a fee, by regulation, for any extension request. Any request for extension must be filed on or before the date on which a reply or amendment is due under paragraph (1). . 5. Expungement