Term ends Jul 31, 2029 · Medium confidence
20-year base term ended Mar 29, 2026
Why Medium: A parent in the chain could not be resolved.
Held by Stryker Corporation
Filed Mar 14, 2013 as application 13/802,855 · Granted Apr 10, 2018
Base term plus 1220 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Mar 29, 2006
Mar 29, 2006
Term ends
Jul 31, 2029
Jul 31, 2029
Granted
Apr 10, 2018
Apr 10, 2018
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
1,220
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 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.
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 runs 1220 days past its 20-year base term on prosecution delay. 2 of 2 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 Mar 29, 2006, when application 11/277,838, the earliest non-provisional in its chain, was filed (this one was filed Mar 14, 2013); a parent in its chain could not be resolved (the next row) | Mar 29, 2026 | 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 | +1220 days, USPTO patent term adjustment record | Jul 31, 2029 | 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 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 31, 2029 | Medium confidence |
This family
| US 7,598,853 | In force Jan 2028 | Jan 2028 |
| US 8,102,254 | Term ended 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 | this patent 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 |
|---|---|---|---|
| Mar 14, 2013 Reel 29992, frame 435 | Furman, Aaron Douglas; Hopper, Christopher John; Geer, John P.; Mix, Joshua Elmer; Becker, David Terrance; Greenbank, Jonathan Mark; Hayes, Michael Joseph | 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.
What's changing
Jul 2029
Term ends Jul 31, 2029. No further fees fall due before then
Note
The 1220 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
96
later US patents cite this one
That is top 5% of utility patents granted in 2018 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.