您好,您只要是在regular OPT有效期内递交了延期申请,即使您的OPT过期了,您也是可以凭借延期的receipt以及之前的EAD和有效的I-20合法工作180天,并且等待延期申请的审理的。
If you file your extension application on time and your OPT period expires while your extension application is pending, USCIS will extend your employment authorization for 180 days.