您好,移民局规定申请STEM延期是:可以在OPT结束前90天递交材料,必须要是在SEVIS记录更改60天内,且OPT有效期内将材料递交到移民局。
Submit the Form I-765, Application for Employment Authorization up to 90 days before your current OPT employment authorization expires, and within 60 days of the date your designated school official (DSO) enters the recommendation for OPT into your Student and Exchange Visitor Information System (SEVIS) record.