Term ends Nov 24, 2030 · High confidence
20-year base term ends Aug 9, 2029
Held by GN Hearing A/S
Filed Aug 9, 2009 as application 12/538,147 · Granted Aug 28, 2012
Base term plus 472 days of patent term adjustment (USPTO delay)
Today
2009
2030
Clock starts
Aug 9, 2009
Aug 9, 2009
Term ends
Nov 24, 2030
Nov 24, 2030
Granted
Aug 28, 2012
Aug 28, 2012
base term
patent term adjustment
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
472
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.
3
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 472 days past its 20-year base term on prosecution delay. 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 Aug 9, 2009, when this application, 12/538,147, was filed | Aug 9, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +472 days, USPTO patent term adjustment record | Nov 24, 2030 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Nov 24, 2030 | High confidence |
This family
| US 8,253,815 | this patent Nov 2030 | Nov 2030 |
| US 8,717,448 | In force Aug 2029 | Aug 2029 |
| Application 14/253,864 | Abandoned not computed | not computed |
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 |
|---|---|---|---|
| Sep 27, 2010 Reel 25044, frame 899 | Sarwari, Atif; Alam, Naveed; Mazhar, Khurshed | Arktan Systems Inc. | Assignment of Assignor's Interest |
| Mar 28, 2012 Reel 27949, frame 71 | Arktan Systems Inc. | Altia Systems Inc. | Assignment of Assignor's Interest |
| Feb 12, 2022 Reel 58995, frame 604 | Altia Systems, Inc. | GN Audio A/S | Assignment of Assignor's Interest |
| Mar 30, 2026 Reel 75299, frame 225 | GN Audio A/S | GN Hearing A/S | Merger |
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
Nov 2030
Term ends Nov 24, 2030. No further fees fall due before then
Note
The 472 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
4
later US patents cite this one
That is below the median of utility patents granted in 2012 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.