Also listed on Lumigrow, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends May 2, 2038 · High confidence
20-year base term ends May 2, 2038
Held by Signify Holding B.V.
Filed May 2, 2018 as application 15/969,470 · Granted Dec 24, 2019
Base term, 20 years from filing
Today
2018
2038
Clock starts
May 2, 2018
May 2, 2018
Term ends
May 2, 2038
May 2, 2038
Granted
Dec 24, 2019
Dec 24, 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.
4
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 2, 2018, when this application, 15/969,470, was filed | May 2, 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 2, 2038 | High confidence |
This family
| US 10,512,221 | this patent May 2038 | May 2038 |
| Application 16/687,840 | Abandoned not computed | not computed |
| Application 18/016,498 | Abandoned not computed | not computed |
3 of 4 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 |
|---|---|---|---|
| Oct 12, 2018 Reel 47149, frame 955 | Wells, Kevin T. | Lumigrow, Inc. | Assignment of Assignor's Interest |
| May 26, 2020 Reel 52753, frame 163 | Lumigrow, Inc. | Windsail Capital Fund, L.p. | Security Interest |
| May 19, 2022 Reel 60119, frame 394 | Windsail Credit Fund, L.p. | Windsail Capital Fund, L.p. | Assignment of Security Interest |
| May 19, 2022 Reel 60119, frame 641 | Windsail Capital Fund, L.P., as Secured Party | Agtech Holdings, Inc. | Foreclosure Sale |
| Sep 27, 2022 Reel 61225, frame 294 | Agtech Holdings, Inc. | Signify Holding B.V. | Assignment of Assignor's Interest |
| Sep 27, 2022 Reel 61225, frame 425 | Windsail Capital Fund, L.p. | Signify Holding B.V. | 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 May 2, 2038. Maintenance fees still fall due before then
Citations
18
later US patents cite this one
That is top 25% 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.