프리미엄으로 진행할경우 다음과 같은 receipt notice가 나옵니다. 그리고 그 번호로 조회해 보면 USCIS 사이트에서도 확인이 가능하고요.
RECEIPT
The Vermont Service Center has received the following I-129 Petition for
Nonimmigrant Worker that had been filed under the Premium Processing
Service: H1B
The Form I-797 Receipt Notice will follow in the mail.
The Vermont Service Center will adjudicate this case within 15 calendar days of
the “received date” set forth above. If approved, you will receive e-mail
notification of such. If we require additional evidence, we will fax said
request to the fax number provided on your completed I-907 Request for Premium
Processing Form.