Term ends Apr 11, 2027 · High confidence
20-year base term ended Apr 27, 2025
Held by Smith & Nephew PLC
Filed Sep 19, 2008 as application 10/599,722 · Granted Jan 31, 2012
Base term plus 714 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
Apr 27, 2005
Apr 27, 2005
Term ends
Apr 11, 2027
Apr 11, 2027
Granted
Jan 31, 2012
Jan 31, 2012
base term
patent term adjustment
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
714
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.
34
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 714 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 Apr 27, 2005, when application PCT/GB2005/001603, the earliest non-provisional in its chain, was filed (this one was filed Sep 19, 2008) | Apr 27, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +714 days, USPTO patent term adjustment record | Apr 11, 2027 | 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 | Apr 11, 2027 | High confidence |
This family
| US 8,257,327 | In force May 2029 | May 2029 |
| US 7,883,494 | Lapsed on the fee record Feb 2023 | Feb 2023 |
| US 8,105,295 | this patent Apr 2027 | Apr 2027 |
| US 8,348,910 | Lapsed on the fee record Jan 2025 | Jan 2025 |
| US 8,162,909 | Lapsed on the fee record Apr 2024 | Apr 2024 |
| Application 12/066,730 | Abandoned not computed | not computed |
| Application 12/066,578 | Abandoned not computed | not computed |
| Application 10/599,728 | Abandoned not computed | not computed |
8 of 34 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 |
|---|---|---|---|
| Sep 19, 2008 Reel 21563, frame 406 | Blott, Patrick Lewis; Hartwell, Edward Yerbury; Lee-webb, Julian; Nicolini, Derek | Smith & Nephew PLC | Assignment of Assignor's Interest |
| Dec 12, 2008 Reel 21978, frame 702 | Blott, Patrick Lewis; Hartwell, Edward Yerbury; Lee-webb, Julian; Nicolini, Derek | Smith & Nephew PLC | This Submission Is to Correct an Error in a Cover Sheet Previously Recorded. the Reel and Frame Number of the Previously Recorded Cover Sheet Is 021563 and 0406. the Correction Being Made Herewith Is a Correction to the Address of the Assignee in Box 2 Ofthis Cover Sheet, and the Correct Attorney's Docket Number as Listed in Box 5. Please Send a Corrected Notice of Recordation of Assignment Document Reel/Frame 021563/0406 to Reflect These Changes. |
| 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Apr 2027
Term ends Apr 11, 2027. No further fees fall due before then
Note
The 714 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
319
later US patents cite this one
That is top 1% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.