“Case Accepted By The USCIS Lockbox”on your N-336 · Appeal a citizenship denial


The intake site accepted your mailed N-336 and processed the payment. Keep proof of the mailing and delivery dates, because the timing of an N-336 matters. A receipt notice should follow. Keep a full copy of the N-336 and any brief you attached.
In general, on any form:
The USCIS Lockbox, the facility that receives mailed filings and payments, accepted your package. Your fee was processed and the case is being entered into the system. A receipt notice usually follows. This is the very first intake step.
The intake site accepted your mailed N-336 and processed the payment. Keep proof of the mailing and delivery dates, because the timing of an N-336 matters. A receipt notice should follow. Keep a full copy of the N-336 and any brief you attached.
It is the facility that opens mailed filings, takes payments and sends cases into the system.
No. It only means your package passed the first intake check.
Usually within a few weeks after the Lockbox accepts the case.
AI-assisted explanation based on the official USCIS status, reviewed by CaseAlerta. Not legal advice. Times are typical ranges, never an exact date.