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SB/448 Certification and Request to Treat an Application Filed During a Designated Significant Unplanned Electronic Business System Outage as an Application Filed by the USPTO’s Electronic Filing System

USPTO patent form SB/448 — category: Fees, updated: 11/2023.

Task
Get forms
Patent or trademark
patent
Legacy system
—
Current entry point
/sites/default/files/documents/sb0448.pdf (verified 2026-09-28)
Legacy system and where it moved
No mention of a legacy system name on the page (verified 2026-09-28)
Fee
No fee statement on the page (verified 2026-09-28)
What you need (account or API key)
Adobe Reader to open the form PDF (per the page text, verified 2026-09-28)
Source
USPTO patent forms (form list)(retrieved 2026-10-06)

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