Term ends Jul 26, 2032 · High confidence
20-year base term ends May 11, 2032
Held by Memjet Technology Limited
Filed May 11, 2012 as application 13/469,089 · Granted Jun 24, 2014
Base term plus 76 days of patent term adjustment (USPTO delay)
Today
2012
2032
Clock starts
May 11, 2012
May 11, 2012
Term ends
Jul 26, 2032
Jul 26, 2032
Granted
Jun 24, 2014
Jun 24, 2014
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
76
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 76 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 May 11, 2012, when this application, 13/469,089, was filed | May 11, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +76 days, USPTO patent term adjustment record | Jul 26, 2032 | 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 | Jul 26, 2032 | High confidence |
This family
| US 8,757,779 | this patent Jul 2032 | Jul 2032 |
| US 8,939,544 | In force May 2032 | May 2032 |
| US 9,718,979 | Lapsed on the fee record Aug 2025 | Aug 2025 |
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 11, 2012 Reel 28192, frame 6 | Fielder, Simon; Gimona, Michele; Digweed, Katja Johanna; Channarayapatna, Lakshmi | Silverbrook Research Pty Ltd. | Assignment of Assignor's Interest |
| Mar 13, 2013 Reel 29990, frame 71 | Silverbrook Research Pty. Limited | Zamtec Limited | Assignment of Assignor's Interest |
| Apr 3, 2013 Reel 30146, frame 374 | Silverbrook Research Pty. Ltd. | Zamtec Limited | Assignment of Assignor's Interest |
| Apr 8, 2013 Reel 30169, frame 193 | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jul 2032
Term ends Jul 26, 2032. No further fees fall due before then
Note
The 76 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 2014 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.