Lapsed Jul 23, 2025 on the fee record · High confidence
20-year base term ends Jun 20, 2028
Third maintenance fee unpaid; grace period ended.
Held by Smith & Nephew PLC
Filed Jun 30, 2010 as application 12/667,231 · Granted Jul 23, 2013
Base term, 20 years from filing, plus 835 days of patent term adjustment (USPTO delay)
Today
Lapsed Jul 23, 2025
2008
2030
Clock starts
Jun 20, 2008
Jun 20, 2008
No longer in force
Jul 23, 2025
Jul 23, 2025
Granted
Jul 23, 2013
Jul 23, 2013
Term would have run to
Oct 3, 2030
Oct 3, 2030
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
835
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.
28
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 Oct 3, 2030: its 20-year base term plus 835 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 Jun 20, 2008, when application PCT/GB2008/002118, the earliest non-provisional in its chain, was filed (this one was filed Jun 30, 2010) | Jun 20, 2028 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +835 days, USPTO patent term adjustment record | Oct 3, 2030 | 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 Jul 23, 2025 | High confidence |
| Computed term end | The steps above, in order | Jul 23, 2025 | High confidence |
This family
| Application 12/667,228 | Abandoned not computed | not computed |
| US 8,974,429 | In force Mar 2029 | Mar 2029 |
| Application 12/672,065 | Abandoned not computed | not computed |
| US 8,843,327 | In force Sep 2029 | Sep 2029 |
| Application 12/672,490 | Abandoned not computed | not computed |
| US 8,494,349 | this patent Jul 2025 | Jul 2025 |
| US 8,444,392 | In force Jun 2030 | Jun 2030 |
| Application 12/672,472 | Abandoned not computed | not computed |
8 of 28 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 28, 2013 Reel 30107, frame 142 | Gordon, Benjamin | Smith & Nephew PLC | Assignment of Assignor's Interest |
| Jun 10, 2019 Reel 49420, frame 895 | Smith & Nephew PLC | Smith & Nephew PLC | Address Change |
| Jun 18, 2019 Reel 49510, frame 609 | Smith & Nephew PLC | Smith & Nephew PLC | Corrective Assignment to Correct the Assignee Address Previously Recorded at Reel: 049420 Frame: 0895. Assignor(S) Hereby Confirms the Assignment. |
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 835 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
161
later US patents cite this one
That is top 5% 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.