Term ends Feb 15, 2031 · High confidence
20-year base term ends May 21, 2030
Held by Signify Holding B.V.
Filed Apr 25, 2011 as application 13/093,705 · Granted Dec 3, 2013
Base term plus 270 days of patent term adjustment (USPTO delay)
Today
2010
2031
Clock starts
May 21, 2010
May 21, 2010
Term ends
Feb 15, 2031
Feb 15, 2031
Granted
Dec 3, 2013
Dec 3, 2013
base term
patent term adjustment
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
270
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,441,202, to Feb 15, 2031. The term already ends on or before that date, so the cap shortened nothing.
3 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.
2
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 runs 270 days past its 20-year base term on prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. All three maintenance fees are recorded paid; no more fees are due. 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, 2010, when application 12/785,383, the earliest non-provisional in its chain, was filed (this one was filed Apr 25, 2011) | May 21, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +270 days, USPTO patent term adjustment record | Feb 15, 2031 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,441,202) | resolves to Feb 15, 2031, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 15, 2031 | High confidence |
This family
| US 8,441,202 | In force Mar 2031 | Mar 2031 |
| US 8,598,804 | this patent Feb 2031 | Feb 2031 |
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 |
|---|---|---|---|
| Jun 22, 2011 Reel 26485, frame 451 | Wilson, Stephen Christian; Thornton, Tom William; Foxall, Thomas George; Grotkowski, Miroslaw Marek; York, Brent | Light-Based Technologies Incorporated | Assignment of Assignor's Interest |
| Mar 31, 2014 Reel 32559, frame 908 | Light-Based Technologies Incorporated | Koninklijke Philips Electronics N V | Assignment of Assignor's Interest |
| May 6, 2014 Reel 32827, frame 342 | Light-Based Technologies Incorporated | Koninklijke Philips N.V. | Assignment of Assignor's Interest |
| Sep 13, 2016 Reel 40060, frame 9 | Koninklijke Philips N.V. | Philips Lighting Holding B.V. | Assignment of Assignor's Interest |
| Oct 28, 2019 Reel 50837, frame 576 | Philips Lighting Holding B.V. | Signify Holding B.V. | Change of Name |
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
Feb 2031
Term ends Feb 15, 2031. No further fees fall due before then
Note
The 270 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,441,202, ends no earlier than this term, so it caps nothing.
Citations
56
later US patents cite this one
That is top 10% of utility patents granted in 2013 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.