Status report
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The official USPTO status record for RYZENTAMOS, serial 99228659, as a dated PDF. One price, one document, delivered in about a minute.
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Trademark Status Report
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The USPTO's own status record for this mark, on one dated page.
- Current status with a plain-English verdict
- Owner, classes, filing basis, and every key date
- The mark as it appears on the federal record
- Every prosecution event, filing to today
- Source-cited with the exact retrieval date
Built from the USPTO's TSDR record. Assignment chain of title and TTAB proceeding files sit in separate USPTO systems and are not included.
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◆ TRADEMARKCHECKER.AITRADEMARK STATUS REPORT
RYZENTAMOSSerial 99228659 · Principal Register
Dead · Refused
Owner: RayzeBio, Inc.
Class 005 - Pharmaceuticals
Filed Jun 11, 2025
The record shows that the application for RYZENTAMOS has been abandoned, so it is not a live or registered mark; the owner listed is RayzeBio, Inc., a Delaware corporation. The filing covered Class 005 pharmaceutical preparations for treating a very wide range of diseases and for diagnostic radiopharmaceuticals, so a later use of a similar name in the same therapeutic or diagnostic drug space would be the closest area of concern. The abandonment means the USPTO record does not give RayzeBio control over every possible use of the word “RYZENTAMOS,” only over the specific goods described. The prosecution history indicates the application proceeded to a Notice of Allowance on Oct 21 2025, but no Statement of Use was filed, leading to an abandonment notice and final abandonment on May 25 2026. The supplied history shows no oppositions, cancellations or court actions, so there are no visible enforcement signals. I'd treat this as a moderate concern if you plan a similar name for pharmaceutical products, but the risk is lower for unrelated goods.
Full event history, owner details, and verdict inside.
The way I'd use it, honestly, is as the thing you attach when a bank, a marketplace, or a co-founder asks "are we clear on the name". It answers in one page.