Term ends no later than May 27, 2038 · Medium confidence
20-year base term ends Aug 11, 2037
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Ast & Science, LLC
Filed Oct 13, 2021 as application 17/499,956 · Granted Apr 9, 2024
Base term plus 289 days of patent term adjustment (USPTO delay)
Today
2017
2038
Clock starts
Aug 11, 2017
Aug 11, 2017
Ends no later than
May 27, 2038
May 27, 2038
Granted
Apr 9, 2024
Apr 9, 2024
base term
patent term adjustment
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
289
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
0 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
10
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 289 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 0 of 3 maintenance fees are paid so far. Confidence: Medium. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Aug 11, 2017, when application 15/675,155, the earliest non-provisional in its chain, was filed (this one was filed Oct 13, 2021) | Aug 11, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +289 days, USPTO patent term adjustment record | May 27, 2038 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than May 27, 2038 | Medium confidence |
This family
| US 9,973,266 | In force Aug 2037 | Aug 2037 |
| US 11,159,228 | In force Aug 2037 | Aug 2037 |
| Application PCT/US2018/036929 | PCT application no patent term | no patent term |
| US 10,979,133 | In force Aug 2037 | Aug 2037 |
| Application PCT/US2020/021215 | PCT application no patent term | no patent term |
| US 11,870,540 | In force no later than Apr 2038 | no later than Apr 2038 |
| US 11,956,066 | this patent no later than May 2038 | no later than May 2038 |
| Application 18/517,478 | Pending not computed | not computed |
8 of 10 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Dec 15, 2021 Reel 58396, frame 297 | Avellan, Abel; Jayasimha, Sriram | Ast & Science, LLC | Assignment of Assignor's Interest |
| Aug 15, 2023 Reel 64587, frame 503 | Ast & Science, LLC; Ast Space Mobile USA LLC | Acp Post Oak Credit II LLC | Security Interest |
| Feb 20, 2025 Reel 70284, frame 297 | Acp Post Oak Credit II LLC | Ast & Science, LLC; Ast Space Mobile USA LLC | Release of Security Interest |
| Feb 20, 2025 reel/frame not recorded | Acp Post Oak Credit II LLC | Ast & Science, LLC | Release of Security Interest |
| Feb 20, 2025 reel/frame not recorded | Acp Post Oak Credit II LLC | Ast Space Mobile USA LLC | Release of Security Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
May 2038
Term ends no later than May 27, 2038. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 289 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than May 27, 2038. We will not guess the cap.
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.