System status and availability
Check this webpage for the latest information on the operating status of USPTO's systems and planned maintenance activities.
Current status of USPTO systems
There are no current events at this time.
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Upcoming planned events
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Block Storage Migration
The USPTO will perform a routine Block Storage Migration for the following databases from midnight-5:30 a.m. ET on Wednesday, May 20.
- Assignments Center
- Electronic System for Trademark Trials and Appeals (ESTTA)
- Open Data Portal (ODP)
- Patent Center
- Patent Maintenance Fees Storefront
- Patent Trial and Appeal Case Tracking System (P-TACTS)
During this maintenance period, Patent Center will be unavailable. Please refer to our Filing Documents during an Outage page for other alternative filing methods.
Last updated: Wednesday, May 13, 2026 at 11:45 AM ET
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