Lapsed Dec 29, 2023 on the fee record · High confidence
20-year base term ended Dec 21, 2025
Second maintenance fee unpaid; grace period ended.
Held by Ossur HF
Filed Dec 16, 2009 as application 12/639,052 · Granted Dec 29, 2015
Base term, 20 years from filing, plus 18 days of patent term adjustment (USPTO delay)
Today
Lapsed Dec 29, 2023
2005
2026
Clock starts
Dec 21, 2005
Dec 21, 2005
No longer in force
Dec 29, 2023
Dec 29, 2023
Granted
Dec 29, 2015
Dec 29, 2015
Term would have run to
Jan 8, 2026
Jan 8, 2026
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
18
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
11
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 Jan 8, 2026: its 20-year base term plus 18 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 Dec 21, 2005, when application 11/312,337, the earliest non-provisional in its chain, was filed (this one was filed Dec 16, 2009) | Dec 21, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +18 days, USPTO patent term adjustment record | Jan 8, 2026 | 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 | 1 of 2 maintenance fees paid | lapsed Dec 29, 2023 | High confidence |
| Computed term end | The steps above, in order | Dec 29, 2023 | High confidence |
This family
| US 7,896,827 | In force Jun 2029 | Jun 2029 |
| US 7,762,973 | Term ended Jan 2026 | Jan 2026 |
| Application PCT/US2008/003237 | PCT application no patent term | no patent term |
| US 9,220,622 | this patent Dec 2023 | Dec 2023 |
| US 8,216,170 | Lapsed on the fee record Jul 2024 | Jul 2024 |
| US 8,425,441 | Lapsed on the fee record Apr 2025 | Apr 2025 |
| US 8,585,623 | Lapsed on the fee record Nov 2025 | Nov 2025 |
| US 8,267,879 | Lapsed on the fee record Sep 2024 | Sep 2024 |
8 of 11 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 |
|---|---|---|---|
| Dec 16, 2009 Reel 23659, frame 492 | Ingimundarson, Arni Thor; Einarsson, Palmi | Ossur HF | Assignment of Assignor's Interest |
| Jun 3, 2010 Reel 24481, frame 649 | Ossur HF | Arion Bank HF. | Security Agreement |
| Apr 21, 2011 Reel 26160, frame 672 | Arion Bank HF | Ossur HF | Release of Security 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Note
The 18 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
49
later US patents cite this one
That is top 10% of utility patents granted in 2015 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.