Patent intelligence · US
US 11666658
Rifamycin analogs and antibody-drug conjugates thereof
Rifamycin analogs and antibody-drug conjugates thereof
Patent details — US 11666658
- Jurisdiction
- US
- Status
- granted
- Grant date
- Jun 6, 2023
- Expiration
- Jun 1, 2043
- Applicant
- REGENERON PHARMACEUTICALS, INC.
- Claims
- 32
- CPC classes
- A61K, A61K47/6803, A61K47/6849, A61K47/6883
Quick answer
US 11666658 (Rifamycin analogs and antibody-drug conjugates thereof) is held by REGENERON PHARMACEUTICALS, INC.. Status: granted. Granted Jun 6, 2023. Expires Jun 1, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.
Key facts
- Applicant
- REGENERON PHARMACEUTICALS, INC.
- Grant date
- Expiration
- Claims
- 32
- CPC classes
- A61K, A61K47/6803, A61K47/6849, A61K47/6883, A61K47/6889, A61P
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Frequently asked questions
What is US patent 11666658?
US 11666658 (Rifamycin analogs and antibody-drug conjugates thereof) is held by REGENERON PHARMACEUTICALS, INC.. Status: granted. Granted Jun 6, 2023. Expires Jun 1, 2043 (17 years remaining) — relevant for patent-cliff and LOE planning.
Who owns US 11666658?
REGENERON PHARMACEUTICALS, INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 837 pharmaceutical patents for this assignee.
When does US 11666658 expire?
Our index shows an expiration date of Jun 1, 2043 (17 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.