Lapsed Dec 31, 2025 on the fee record · High confidence
20-year base term ends Aug 11, 2029
Third maintenance fee unpaid; grace period ended.
Held by Hzo, Inc.
Filed Feb 18, 2011 as application 13/030,684 · Granted Dec 31, 2013
Base term, 20 years from filing, plus 104 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 31, 2025
2009
2029
Clock starts
Aug 11, 2009
Aug 11, 2009
No longer in force
Dec 31, 2025
Dec 31, 2025
Granted
Dec 31, 2013
Dec 31, 2013
Term would have run to
Nov 23, 2029
Nov 23, 2029
base term
patent term adjustment
after the term ends
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
104
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
Its term would have run to Nov 23, 2029: its 20-year base term plus 104 days of term adjustment for prosecution delay. 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 11, 2009, when application PCT/GB2009/001966, the earliest non-provisional in its chain, was filed (this one was filed Feb 18, 2011) | Aug 11, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +104 days, USPTO patent term adjustment record | Nov 23, 2029 | 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 | 2 of 3 maintenance fees paid | lapsed Dec 31, 2025 | High confidence |
| Computed term end | The steps above, in order | Dec 31, 2025 | High confidence |
This family
| US 8,618,420 | this patent Dec 2025 | Dec 2025 |
| US 9,055,700 | In force Nov 2029 | Nov 2029 |
2 of 3 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 |
|---|---|---|---|
| Apr 14, 2011 Reel 26125, frame 148 | Crombie 123 Limited | Semblant Limited | Change of Name |
| Apr 14, 2011 Reel 26125, frame 100 | Humphries, Mark Robson; Ferdinandi, Frank; Smith, Rodney Edward | Crombie 123 Limited | Assignment of Assignor's Interest |
| Apr 14, 2011 Reel 26124, frame 330 | Semblant Limited | Semblant Global Limited | Assignment of Assignor's Interest |
| Oct 14, 2014 Reel 33942, frame 956 | Semblant Global Limited | Semblant Limited | Assignment of Assignor's Interest |
| Jul 1, 2019 Reel 49646, frame 501 | Semblant Limited | Cathay Bank | Security Interest |
| Dec 17, 2020 Reel 54678, frame 21 | Semblant Limited | Hzo, Inc. | Assignment of Assignor's Interest |
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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 104 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
13
later US patents cite this one
That is above the median of utility patents granted in 2013 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.