Term ends Dec 13, 2026 · Medium confidence
20-year base term ends Dec 13, 2026
Why Medium: A parent in the chain could not be resolved.
Held by Stryker Corporation
Filed Nov 2, 2018 as application 16/178,931 · Granted Sep 28, 2021
Base term, 20 years from filing
Today
2006
2026
Clock starts
Dec 13, 2006
Dec 13, 2006
Term ends
Dec 13, 2026
Dec 13, 2026
Granted
Sep 28, 2021
Sep 28, 2021
base term
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.
None
Terminal disclaimer
No disclaimer on this record.
1 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
57
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. 1 of 1 maintenance fees is 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 Dec 13, 2006, when application 11/610,071, the earliest non-provisional in its chain, was filed (this one was filed Nov 2, 2018); a parent in its chain could not be resolved (the next row) | Dec 13, 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 | None on file | no change | 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 | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Dec 13, 2026 | Medium confidence |
This family
| US 6,481,019 | Term ended Jan 2021 | Jan 2021 |
| Application 60/271,187 | Provisional application no patent term | no patent term |
| US 6,547,432 | Term ended Oct 2021 | Oct 2021 |
| US 6,679,862 | Term ended Feb 2022 | Feb 2022 |
| US D471,274 | Term ended Mar 2017 | Mar 2017 |
| US 6,622,311 | Term ended Jan 2021 | Jan 2021 |
| US 6,902,673 | Term ended Sep 2022 | Sep 2022 |
| US 6,736,537 | Term ended Oct 2021 | Oct 2021 |
8 of 57 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 4, 2020 Reel 52835, frame 237 | Lalomia, Brent S.; Reasoner, Stephen J.; Isham, Stephen; Gamhewage, Chamara L.; Wasserman, Mark A.; Rocque, Glen D.; Durnell, Troy E.; Westphal, Grant; Maclachlan, Brian | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Dec 2026
Term ends Dec 13, 2026. No further fees fall due before then
Citations
242
later US patents cite this one
That is top 1% of utility patents granted in 2021 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.