Term ends Dec 18, 2033 · High confidence
20-year base term ends Jul 27, 2029
Held by GN Hearing A/S
Filed Jul 27, 2009 as application 12/509,509 · Granted Feb 17, 2015
Base term plus 1605 days of patent term adjustment (USPTO delay)
Today
2009
2033
Clock starts
Jul 27, 2009
Jul 27, 2009
Term ends
Dec 18, 2033
Dec 18, 2033
Granted
Feb 17, 2015
Feb 17, 2015
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
1,605
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.
67
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 1605 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 Jul 27, 2009, when this application, 12/509,509, was filed | Jul 27, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1605 days, USPTO patent term adjustment record | Dec 18, 2033 | 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 | Dec 18, 2033 | High confidence |
This family
| US 7,091,953 | Term ended Aug 2020 | Aug 2020 |
| US 7,091,955 | Term ended Jan 2021 | Jan 2021 |
| US 7,925,797 | In force Feb 2029 | Feb 2029 |
| US 9,454,297 | In force Aug 2032 | Aug 2032 |
| US 8,719,714 | In force Feb 2033 | Feb 2033 |
| US 8,956,234 | this patent Dec 2033 | Dec 2033 |
| US 9,762,961 | In force Jun 2034 | Jun 2034 |
| US 9,387,395 | In force Oct 2032 | Oct 2032 |
8 of 67 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 |
|---|---|---|---|
| Sep 25, 2009 Reel 23284, frame 601 | Wolff-petersen, Jacob; Soelberg, Tino | Steelseries HQ | Assignment of Assignor's Interest |
| Jun 5, 2012 Reel 28323, frame 646 | Wolff-petersen, Jacob; Soelberg, Tino | Steelseries APS | Corrective Assignment to Correct the Name of Assignee Previously Recorded on Reel 023284 Frame 0601. Assignor(S) Hereby Confirms the Correct Name of the Assignee Is Steelseries Aps.. |
| Jan 23, 2025 Reel 69988, frame 735 | Steelseries APS | GN Audio A/S | Nunc Pro Tunc Assignment |
| Mar 30, 2026 Reel 75299, frame 264 | Steel Series APS | Steel Series APS | Change of Address |
| Mar 30, 2026 Reel 75299, frame 257 | Steel Series APS | GN Audio A/S | Merger |
| Mar 30, 2026 Reel 75299, frame 271 | 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
Dec 2033
Term ends Dec 18, 2033. No further fees fall due before then
Note
The 1605 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
103
later US patents cite this one
That is top 5% of utility patents granted in 2015 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.