Term ends Aug 11, 2037 · High confidence
20-year base term ends Aug 11, 2037
Held by Ast & Science, LLC
Filed Mar 20, 2019 as application 16/359,533 · Granted Apr 13, 2021
Base term, 20 years from filing
Today
2017
2037
Clock starts
Aug 11, 2017
Aug 11, 2017
Term ends
Aug 11, 2037
Aug 11, 2037
Granted
Apr 13, 2021
Apr 13, 2021
base term
fee events
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 11,159,228, US 9,973,266, to Aug 11, 2037. The term already ends on or before that date, so the cap shortened nothing.
1 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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 1 of 3 maintenance fees is paid so far. Confidence: High. 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 Mar 20, 2019) | Aug 11, 2037 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 11,159,228, US 9,973,266) | resolves to Aug 11, 2037, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Aug 11, 2037 | High 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 | this patent 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 | In force 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 |
|---|---|---|---|
| May 23, 2019 Reel 49271, frame 418 | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Aug 2037
Term ends Aug 11, 2037. Maintenance fees still fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 11,159,228, US 9,973,266, ends no earlier than this term, so it caps nothing.
Citations
44
later US patents cite this one
That is top 5% of utility patents granted in 2021 in our data, the only group it is compared against.
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
Computed patent terms end on the dates shown. 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.