Term ends Jan 16, 2032 · Medium confidence
20-year base term ends Feb 25, 2030
Why Medium: A parent in the chain could not be resolved.
Held by Zimmer, Inc.
Filed Oct 7, 2011 as application 13/268,262 · Granted Jul 14, 2015
Base term plus 690 days of patent term adjustment (USPTO delay)
Today
2010
2032
Clock starts
Feb 25, 2010
Feb 25, 2010
Term ends
Jan 16, 2032
Jan 16, 2032
Granted
Jul 14, 2015
Jul 14, 2015
base term
patent term adjustment
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
690
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.
12
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 690 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Feb 25, 2010, when application PCT/US2010/025466, the earliest non-provisional in its chain, was filed (this one was filed Oct 7, 2011); a parent in its chain could not be resolved (the next row) | Feb 25, 2030 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | +690 days, USPTO patent term adjustment record | Jan 16, 2032 | 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 | In force | High confidence |
| Computed term end | The steps above, in order | Jan 16, 2032 | Medium confidence |
This family
| US 8,989,460 | In force Aug 2031 | Aug 2031 |
| US 9,078,755 | this patent Jan 2032 | Jan 2032 |
| Application PCT/US2012/058902 | PCT application no patent term | no patent term |
| US 9,675,461 | In force Apr 2030 | Apr 2030 |
| US 10,130,478 | In force Apr 2030 | Apr 2030 |
| US 9,895,230 | In force Feb 2030 | Feb 2030 |
| US 10,052,206 | In force Feb 2030 | Feb 2030 |
| US 10,213,311 | In force Feb 2030 | Feb 2030 |
8 of 12 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 |
|---|---|---|---|
| Jun 22, 2012 Reel 28426, frame 312 | Mahfouz, Mohamed Rashwan | Zimmer, 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jan 2032
Term ends Jan 16, 2032. Maintenance fees still fall due before then
Note
The 690 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
37
later US patents cite this one
That is top 25% 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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.