Term ends no later than Mar 24, 2030 · Medium confidence
20-year base term ended Jun 12, 2026
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Jun 12, 2006
Mar 24, 2030
May 24, 2011
This patent's term runs 1381 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. All three maintenance fees are recorded paid; no more fees are due. Confidence: Medium. from the record
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jun 12, 2006, when this application, 11/423,528, was filed | Jun 12, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1381 days, USPTO patent term adjustment record | Mar 24, 2030 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Mar 24, 2030 | Medium confidence |
This family
| US 7,949,144 | this patent no later than Mar 2030 | no later than Mar 2030 |
| US 8,467,555 | In force Nov 2026 | Nov 2026 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Aug 23, 2006 Reel 18161, frame 691 | Harsch, Samuel; Dijkstra, Evert | Phonak AG | Assignment of Assignor's Interest |
| Sep 24, 2015 Reel 36674, frame 492 | Phonak AG | Sonova AG | 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
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Mar 24, 2030. We will not guess the cap.