US 11,890,270 · Application 17/136,674
US Patent 11,890,270 — assignment history and current owner
Polymorphic Forms Of St-246 And Methods Of Preparation
Who owns US Patent 11,890,270?
US11890270 ("Polymorphic Forms Of St-246 And Methods Of Preparation") — current assignee: SIGA TECHNOLOGIES, INC.. Status: Active, estimated expiration August 8, 2032. 2 recorded USPTO assignments.
Based on recorded USPTO assignment data, the apparent operating assignee of US Patent 11,890,270 is SIGA TECHNOLOGIES, INC.. Based on the most recent ownership transfer record (recorded 2020-12-29).
- Patent title
- Polymorphic Forms Of St-246 And Methods Of Preparation
- Application number
- 17/136,674
- Apparent operating assignee
- SIGA TECHNOLOGIES, INC.
- Patent status
- Active, estimated expiration August 8, 2032
- Recorded assignments
- 2
Recorded assignment history
| Executed | Recorded | Conveyance | Assignor(s) | Assignee(s) | Reel/frame |
|---|---|---|---|---|---|
| Mar 14, 2011 | Dec 29, 2020 | Ownership Transfer | ANDERSON, MELIALANI A.C.L.S.; TYAVANAGIMATT, SHANTHAKUMAR R.; HRUBY, DENNIS E.; MCCLOUGHAN, KELLEY A.; NELSON, DYLAN; WEIMERS, WILLIAM C.; O'NEILL, MICHAEL H.; BOLKEN, TOVE' C.; SWEETAPPLE, GARY | SIGA TECHNOLOGIES, INC. | 54768/392 |
| Mar 24, 2026 | Mar 25, 2026 | Other | SIGA TECHNOLOGIES, INC. | SIGA TECHNOLOGIES, INC. | 75242/438 |
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Chain of title
In 2020, ANDERSON, MELIALANI A.C.L.S.; TYAVANAGIMATT, SHANTHAKUMAR R. (+7 more) assigned the patent to SIGA TECHNOLOGIES, INC..
Apparent recorded rights summary — disclaimer
This tool presents recorded assignment data from the USPTO assignment database. It does not constitute a legal opinion on ownership or title. Assignments may exist that have not been recorded. Corrective records, off-record transfers, court orders, and other events may affect actual ownership. Consult a qualified patent attorney for definitive title analysis.
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Application 17/136,674 · US 11,890,270
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Data sourced from public USPTO assignment records. This tool provides informational summaries and should not be relied upon as legal advice or a definitive title opinion. Always verify patent ownership independently, especially where unrecorded transfers, court orders, or other off-record events may apply.