Term ended Mar 29, 2026 · High confidence
20-year base term ended Mar 29, 2026
Held by Stryker Corporation
Filed Oct 5, 2009 as application 12/573,545 · Granted Jan 24, 2012
Base term, 20 years from filing
Today
Term ended Mar 29, 2026
2006
2026
Clock starts
Mar 29, 2006
Mar 29, 2006
Term ended
Mar 29, 2026
Mar 29, 2026
Granted
Jan 24, 2012
Jan 24, 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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 7,598,853, to Mar 29, 2026. The term already ends on or before that date, so the cap shortened nothing.
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.
10
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. All three maintenance fees were paid, so no fee lapse ended it. 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 Mar 29, 2006, when application 11/277,838, the earliest non-provisional in its chain, was filed (this one was filed Oct 5, 2009) | Mar 29, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,598,853) | resolves to Mar 29, 2026, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Mar 29, 2026 | High confidence |
This family
| US 7,598,853 | In force Jan 2028 | Jan 2028 |
| US 8,102,254 | this patent Mar 2026 | Mar 2026 |
| US 8,319,633 | Term ended Mar 2026 | Mar 2026 |
| US 8,461,982 | Term ended Mar 2026 | Mar 2026 |
| US 8,674,826 | Term ended Mar 2026 | Mar 2026 |
| US 9,937,090 | In force Jul 2029 | Jul 2029 |
| Application PCT/US2013/036926 | PCT application no patent term | no patent term |
| US 9,838,836 | In force Dec 2026 | Dec 2026 |
8 of 10 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 15, 2009 Reel 23653, frame 84 | Furman, Aaron Douglas; Bhimavarapu, Krishna Sandeep | Stryker Canadian Management, Inc. | Assignment of Assignor's Interest |
| Jan 11, 2012 Reel 27515, frame 331 | Stryker Canadian Management Inc. | Stryker Canadian Management ULC | Change of Name |
| Jan 19, 2012 Reel 27580, frame 34 | Stryker Canadian Management ULC | Stryker Corporation | Assignment of Assignor's Interest |
| Dec 18, 2024 Reel 69737, frame 184 | Stryker Corporation | Stryker Corporation | Change of Address |
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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 7,598,853, ends no earlier than this term, so it caps nothing.
Citations
51
later US patents cite this one
That is top 25% 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.