Lapsed Apr 10, 2024 on the fee record · Medium confidence
20-year base term ended Sep 30, 2023
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 7,717,282), so the cap could be lower.
Third maintenance fee unpaid; grace period ended.
Held by CO2 Pac Limited
Filed Dec 15, 2005 as application 10/529,198 · Granted Apr 10, 2012
Base term plus 1104 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed Apr 10, 2024
2003
2026
Clock starts
Sep 30, 2003
Sep 30, 2003
Term ended
Apr 10, 2024
Apr 10, 2024
Granted
Apr 10, 2012
Apr 10, 2012
base term
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
1,104
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 7,717,282.
2 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
82
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 Aug 29, 2021: its 20-year base term plus 1104 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. Confidence: Medium. 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 Sep 30, 2003, when application PCT/NZ2003/000220, the earliest non-provisional in its chain, was filed (this one was filed Dec 15, 2005) | Sep 30, 2023 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1104 days, USPTO patent term adjustment record | Oct 8, 2026 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,717,282) | capped to Aug 29, 2021 | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 2 of 2 maintenance fees paid | lapsed Apr 10, 2024 | High confidence |
| Computed term end | The steps above, in order | Apr 10, 2024 | Medium confidence |
This family
| US 6,612,451 | Lapsed on the fee record Sep 2015 | Sep 2015 |
| US 7,077,279 | Term ended Aug 2021 | Aug 2021 |
| Application 10/444,616 | Abandoned not computed | not computed |
| Application PCT/US2004/016405 | PCT application no patent term | no patent term |
| US 7,543,713 | Term ended Sep 2023 | Sep 2023 |
| Application PCT/US2004/024581 | PCT application no patent term | no patent term |
| US 8,152,010 | this patent Apr 2024 | Apr 2024 |
| US 8,381,940 | Lapsed on the fee record Feb 2025 | Feb 2025 |
8 of 82 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 |
|---|---|---|---|
| Mar 6, 2006 Reel 17258, frame 668 | Melrose, David Murray | CO2 Pac Limited | 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 1104 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 7,717,282.
Citations
133
later US patents cite this one
That is top 5% of utility patents granted in 2012 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.