Term ended May 24, 2026 · High confidence
20-year base term ended May 24, 2026
Held by Koninklijke Philips N.V.
Filed Dec 26, 2011 as application 13/337,219 · Granted May 28, 2013
Base term, 20 years from filing
Today
Term ended May 24, 2026
2006
2026
Clock starts
May 24, 2006
May 24, 2006
Term ended
May 24, 2026
May 24, 2026
Granted
May 28, 2013
May 28, 2013
base term
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 7,539,532, US 7,539,533, US 7,558,622, US 8,108,036, US 8,121,673, to May 24, 2026. 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.
23
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. 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 were paid, so no fee lapse ended it. 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 24, 2006, when application 11/439,631, the earliest non-provisional in its chain, was filed (this one was filed Dec 26, 2011) | May 24, 2026 | 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 | Disclaimer resolved from the filed document (refs US 7,539,532, US 7,539,533, US 7,558,622, US 8,108,036, US 8,121,673) | resolves to May 24, 2026, 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 | term ended | High confidence |
| Computed term end | The steps above, in order | May 24, 2026 | High confidence |
This family
| US 7,539,532 | In force Aug 2027 | Aug 2027 |
| US 7,558,622 | In force (reinstated) Aug 2027 | Aug 2027 |
| US 8,121,673 | In force Nov 2027 | Nov 2027 |
| US 8,108,036 | In force Sep 2027 | Sep 2027 |
| US 8,328,718 | Term ended May 2026 | May 2026 |
| US 8,449,471 | this patent May 2026 | May 2026 |
| US 8,323,189 | Term ended May 2026 | May 2026 |
| US 8,425,415 | Term ended May 2026 | May 2026 |
8 of 23 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 |
|---|---|---|---|
| Dec 22, 2014 Reel 34570, frame 704 | Tran, Bao; Tran, Ha-thi | Empire IP LLC | Assignment of Assignor's Interest |
| Dec 18, 2015 Reel 37332, frame 414 | Empire IP LLC | West 74TH Street, Series 75 of Allied Security Trust I | Assignment of Assignor's Interest |
| Apr 21, 2016 Reel 38337, frame 970 | West 74TH Street, Series 75 of Allied Security Trust I | Koninklijke Philips N.V. | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 7,539,532, US 7,539,533, US 7,558,622, US 8,108,036, US 8,121,673, ends no earlier than this term, so it caps nothing.
Citations
548
later US patents cite this one
That is top 1% 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.