Term ended Sep 27, 2025 · High confidence
20-year base term ended Apr 21, 2024
Held by Acclarent, Inc.
Filed Jan 18, 2005 as application 11/037,548 · Granted Dec 9, 2008
Base term plus 524 days of patent term adjustment (USPTO delay)
Today
Term ended Sep 27, 2025
2004
2026
Clock starts
Apr 21, 2004
Apr 21, 2004
Term ended
Sep 27, 2025
Sep 27, 2025
Granted
Dec 9, 2008
Dec 9, 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
524
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.
78
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 524 days past its 20-year base term on prosecution delay. 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 Apr 21, 2004, when application 10/829,917, the earliest non-provisional in its chain, was filed (this one was filed Jan 18, 2005) | Apr 21, 2024 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +524 days, USPTO patent term adjustment record | Sep 27, 2025 | 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 | Sep 27, 2025 | High confidence |
This family
| US 7,654,997 | Term ended Sep 2025 | Sep 2025 |
| US 7,361,168 | Term ended no later than Aug 2025 | no later than Aug 2025 |
| Application 10/944,270 | Abandoned not computed | not computed |
| US 7,462,175 | this patent Sep 2025 | Sep 2025 |
| US 7,720,521 | In force Mar 2028 | Mar 2028 |
| US 7,803,150 | In force Apr 2028 | Apr 2028 |
| Application 11/193,020 | Abandoned not computed | not computed |
| US 7,410,480 | Term ended Sep 2024 | Sep 2024 |
8 of 78 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 |
|---|---|---|---|
| May 19, 2005 Reel 16582, frame 979 | Chang, John Y.; Makower, Joshua; Vrany, Julia D.; Lamson, Theodore C.; Walke, Amrish Jayprakash | Exploramed NC1, Inc. | Assignment of Assignor's Interest |
| Oct 27, 2006 Reel 18448, frame 642 | Exploramed NC1, Inc. | Acclarent, Inc. | 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.
What's changing
Note
The 524 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
647
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.