Also listed on Zamtec Limited, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends no later than Dec 4, 2026 · Medium confidence
20-year base term ends Dec 4, 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.
Dec 4, 2006
Dec 4, 2026
Apr 19, 2011
This patent's term is its 20-year base term, with no adjustment for 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 Dec 4, 2006, when application 11/607,980, the earliest non-provisional in its chain, was filed (this one was filed Aug 18, 2010) | Dec 4, 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 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 Dec 4, 2026 | Medium confidence |
This family
| US 7,794,056 | In force no later than Jul 2029 | no later than Jul 2029 |
| US 7,926,915 | this patent no later than Dec 2026 | no later than Dec 2026 |
Assignments
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Aug 18, 2010 Reel 24856, frame 946 | McAvoy, Gregory John; Silverbrook, Kia | Silverbrook Research Pty Ltd. | Assignment of Assignor's Interest |
| Oct 29, 2013 Reel 31510, frame 531 | Silverbrook Research Pty. Limited | Zamtec Limited | Assignment of Assignor's Interest |
| Jun 25, 2014 Reel 33244, frame 276 | Zamtec Limited | Memjet Technology Limited | 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 Dec 4, 2026. We will not guess the cap.