Term ended Jul 10, 2023 · Medium confidence
20-year base term ended Jul 14, 2020
Why Medium: A parent in the chain could not be resolved.
Filed May 30, 2001 as application 09/870,418 · Granted Apr 1, 2008
Base term plus 1091 days of patent term adjustment (USPTO delay)
Today
Term ended Jul 10, 2023
2000
2026
Clock starts
Jul 14, 2000
Jul 14, 2000
Term ended
Jul 10, 2023
Jul 10, 2023
Granted
Apr 1, 2008
Apr 1, 2008
base term
patent term adjustment
after the term ends
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
1,091
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
111
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 1091 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. Confidence: Medium. 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 Jul 14, 2000, when application 09/616,214, the earliest non-provisional in its chain, was filed (this one was filed May 30, 2001); a parent in its chain could not be resolved (the next row) | Jul 14, 2020 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +1091 days, USPTO patent term adjustment record | Jul 10, 2023 | 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 | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Jul 10, 2023 | Medium confidence |
This family
| US 7,186,003 | Term ended May 2018 | May 2018 |
| US 7,064,498 | Term ended Aug 2017 | Aug 2017 |
| US 6,577,080 | Term ended Aug 2017 | Aug 2017 |
| US 6,608,453 | Term ended Aug 2017 | Aug 2017 |
| US 7,353,071 | this patent Jul 2023 | Jul 2023 |
| US 7,228,190 | Term ended Nov 2023 | Nov 2023 |
| US 7,031,920 | Term ended Sep 2019 | Sep 2019 |
| US 6,888,322 | Term ended Oct 2017 | Oct 2017 |
8 of 111 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 |
|---|---|---|---|
| Aug 7, 2001 Reel 12073, frame 319 | Color Kinetics Incorporated | Silicon Valley Bank | Security Agreement |
| Feb 12, 2002 Reel 12613, frame 320 | Blackwell, Michael K.; Lys, Ihor A.; Warwick, John; Morgan, Frederick M.; Mincheva, Adriana | Color Kinetics, Inc. | Assignment of Assignor's Interest |
| Nov 26, 2004 Reel 16004, frame 982 | Silicon Valley Bank | Color Kinetics, Inc. | Release |
| Nov 20, 2007 Reel 20138, frame 153 | Color Kinetics Incorporated | Philips Solid-State Lighting Solutions, Inc. | Change of Name |
| Jul 22, 2016 Reel 39428, frame 310 | Philips Solid-State Lighting Solutions, Inc. | Philips Lighting North America Corporation | Change of Name |
| Oct 28, 2019 Reel 50836, frame 669 | Philips Lighting North America Corporation | Signify North America Corporation | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 1091 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
495
later US patents cite this one
That is top 1% of utility patents granted in 2008 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.