Patent intelligence · US
US 9221858
Sialic acid analogs
Sialic acid analogs
Patent details — US 9221858
- Jurisdiction
- US
- Status
- granted
- Grant date
- Dec 29, 2015
- Expiration
- Dec 24, 2035
- Applicant
- Ultragenyx Pharmaceutical Inc.
- Claims
- 35
- CPC classes
- A61P, A61P21/00
Quick answer
US 9221858 (Sialic acid analogs) is held by Ultragenyx Pharmaceutical Inc.. Status: granted. Granted Dec 29, 2015. Expires Dec 24, 2035 (9 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Ultragenyx Pharmaceutical Inc.
- Grant date
- Expiration
- Claims
- 35
- CPC classes
- A61P, A61P21/00
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Frequently asked questions
What is US patent 9221858?
US 9221858 (Sialic acid analogs) is held by Ultragenyx Pharmaceutical Inc.. Status: granted. Granted Dec 29, 2015. Expires Dec 24, 2035 (9 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 9221858?
Ultragenyx Pharmaceutical Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 23 pharmaceutical patents for this assignee.
When does US 9221858 expire?
Our index shows an expiration date of Dec 24, 2035 (9 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.