Patent intelligence · US
US 9439888
Tetrazolones as a carboxylic acid bioisosteres
Tetrazolones as a carboxylic acid bioisosteres
Patent details — US 9439888
- Jurisdiction
- US
- Status
- granted
- Grant date
- Sep 13, 2016
- Expiration
- Sep 8, 2036
- Applicant
- Rigel Pharmaceuticals, Inc.
- Claims
- 2
- CPC classes
- A61K, A61K31/41, A61K31/4155, A61K31/4184
Quick answer
US 9439888 (Tetrazolones as a carboxylic acid bioisosteres) is held by Rigel Pharmaceuticals, Inc.. Status: granted. Granted Sep 13, 2016. Expires Sep 8, 2036 (10 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- Rigel Pharmaceuticals, Inc.
- Grant date
- Expiration
- Claims
- 2
- CPC classes
- A61K, A61K31/41, A61K31/4155, A61K31/4184, A61K31/4245, A61K31/4709
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Frequently asked questions
What is US patent 9439888?
US 9439888 (Tetrazolones as a carboxylic acid bioisosteres) is held by Rigel Pharmaceuticals, Inc.. Status: granted. Granted Sep 13, 2016. Expires Sep 8, 2036 (10 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 9439888?
Rigel Pharmaceuticals, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 373 pharmaceutical patents for this assignee.
When does US 9439888 expire?
Our index shows an expiration date of Sep 8, 2036 (10 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.