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The USPTO will perform routine maintenance from 9 p.m. ET on Friday, May 22 to 5 a.m. ET on Saturday, May 23.
The following manuals will be briefly unavailable. The estimated downtime will be approximately 12:01 am – 1:15 am ET on Saturday May 23.
- Manual of Patent Examining Procedure (eMPEP)
- Trademark Manual of Examining Procedure (TMEP)
- Trademark Federal Statutes and Rules (TFSR)
- Trademark Trial and Appeal Board Manual of Procedure (TBMP)
Last updated: Saturday, May 23, 2026 at 5:00 AM ET
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