Term ends May 21, 2038 · High confidence
20-year base term ends May 21, 2038
Held by Archer Aviation Inc.
Filed May 21, 2018 as application 15/985,507 · Granted Jul 16, 2019
Base term, 20 years from filing
Today
2018
2038
Clock starts
May 21, 2018
May 21, 2018
Term ends
May 21, 2038
May 21, 2038
Granted
Jul 16, 2019
Jul 16, 2019
base term
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
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. 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 May 21, 2018, when this application, 15/985,507, was filed | May 21, 2038 | 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 | None on record | no cap applied | 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 | May 21, 2038 | High confidence |
This family
| US 10,351,235 | this patent May 2038 | May 2038 |
| US 11,066,159 | In force Aug 2039 | Aug 2039 |
| US 10,974,826 | In force May 2038 | May 2038 |
| US 11,964,755 | In force Jul 2040 | Jul 2040 |
| US 12,552,527 | In force May 2038 | May 2038 |
| Application 19/081,768 | Pending not computed | not computed |
| US 12,473,087 | In force May 2038 | May 2038 |
| US 12,404,020 | In force May 2038 | May 2038 |
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 21, 2018 Reel 45865, frame 700 | Karem, Abe; Waide, William Martin | Karem Airkraft, Inc. | Assignment of Assignor's Interest |
| Jun 17, 2019 Reel 49489, frame 4 | Karem, Abe; Waide, Willam Martin | Karem Aircraft, Inc. | Corrective Assignment to Correct the Receiving Party Name Previously Recorded at Reel: 45865 Frame: 700. Assignor(S) Hereby Confirms the Assignement. |
| Jun 30, 2020 Reel 53087, frame 488 | Karem Aircraft, Inc. | Overair, Inc. | Assignment of Assignor's Interest |
| May 6, 2025 Reel 71041, frame 433 | Overair, Inc. | Archer Aviation Inc. | Assignment of Assignor's 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 May 21, 2038. Maintenance fees still fall due before then
Citations
76
later US patents cite this one
That is top 5% of utility patents granted in 2019 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.