Lapsed May 2, 2025 on the fee record · High confidence
20-year base term ends Mar 16, 2035
Second maintenance fee unpaid; grace period ended.
Held by Lockheed Martin Corporation
Filed Mar 16, 2015 as application 14/659,498 · Granted May 2, 2017
Base term, 20 years from filing
Today
Lapsed May 2, 2025
2015
2035
Clock starts
Mar 16, 2015
Mar 16, 2015
No longer in force
May 2, 2025
May 2, 2025
Granted
May 2, 2017
May 2, 2017
Term would have run to
Mar 16, 2035
Mar 16, 2035
base term
after the term ends
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.
66
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Mar 16, 2035: its 20-year base term, with no adjustment for prosecution delay. 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 Mar 16, 2015, when this application, 14/659,498, was filed | Mar 16, 2035 | 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 | lapsed May 2, 2025 | High confidence |
| Computed term end | The steps above, in order | May 2, 2025 | High confidence |
This family
| US 9,638,821 | this patent May 2025 | May 2025 |
| Application PCT/US2015/021093 | PCT application no patent term | no patent term |
| US 9,853,837 | In force Apr 2035 | Apr 2035 |
| Application PCT/US2015/024265 | PCT application no patent term | no patent term |
| US 9,590,601 | Lapsed on the fee record Mar 2021 | Mar 2021 |
| US 10,168,393 | In force Sep 2036 | Sep 2036 |
| US 9,614,589 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 9,557,391 | Lapsed on the fee record Jan 2021 | Jan 2021 |
8 of 66 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 |
|---|---|---|---|
| Apr 10, 2015 Reel 35386, frame 59 | Meyer, Thomas J. | Lockheed Martin Corporation | 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.
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Alerts on its grants, lapses and transfers.
Citations
14
later US patents cite this one
That is top 25% of utility patents granted in 2017 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.