Lapsed Aug 2, 2026 on the fee record · High confidence

Computed 20-year base term

First maintenance fee unpaid; grace period ended.

Held by Sigmasense, LLC.

Filed Apr 23, 2021 as application 17/238,367 · Granted Aug 2, 2022

Base term, 20 years from filing

Today

Lapsed Aug 2, 2026

2018 2038

Clock starts
Sep 14, 2018

No longer in force
Aug 2, 2026

Granted
Aug 2, 2022

Term would have run to
Sep 14, 2038

base term after the term ends 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.

None

Terminal disclaimer

No disclaimer on this record.

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.

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 Sep 14, 2038: 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 Sep 14, 2018, when application 16/131,990, the earliest non-provisional in its chain, was filed (this one was filed Apr 23, 2021)	Sep 14, 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	0 of 3 maintenance fees paid	lapsed Aug 2, 2026	High confidence
Computed term end	The steps above, in order	Aug 2, 2026	High confidence

This family

US 10,845,985	In force Sep 2038	Sep 2038
US 11,269,510	In force Sep 2038	Sep 2038
US 11,402,990	this patent Aug 2026	Aug 2026
US 11,460,999	Lapsed on the fee record Oct 2026	Oct 2026
US 11,474,685	In force Sep 2038	Sep 2038
US 11,592,978	In force Sep 2038	Sep 2038
US 11,726,652	In force Sep 2038	Sep 2038
US 11,740,781	In force Sep 2038	Sep 2038

8 of 17 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 23, 2021 Reel 56020, frame 956	Gray, Patrick Troy; Morrison, Gerald Dale; Van Ostrand, Daniel Keith; Seger, Richard Stuart, JR.	Sigmasense, LLC.	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

later US patents cite this one

That is above the median of utility patents granted in 2022 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.

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