Term ends Dec 16, 2031 · High confidence
20-year base term ends Dec 16, 2031
Held by Stryker Corporation
Filed Sep 27, 2013 as application 14/039,823 · Granted Jan 20, 2015
Base term, 20 years from filing
Today
2011
2031
Clock starts
Dec 16, 2011
Dec 16, 2011
Term ends
Dec 16, 2031
Dec 16, 2031
Granted
Jan 20, 2015
Jan 20, 2015
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,568,304, to Dec 16, 2031. 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.
17
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 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 Dec 16, 2011, when application 13/328,773, the earliest non-provisional in its chain, was filed (this one was filed Sep 27, 2013) | Dec 16, 2031 | 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 8,568,304) | resolves to Dec 16, 2031, 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 | In force | High confidence |
| Computed term end | The steps above, in order | Dec 16, 2031 | High confidence |
This family
| US 8,292,805 | In force Apr 2030 | Apr 2030 |
| Application PCT/US2010/056074 | PCT application no patent term | no patent term |
| US 8,568,304 | In force Dec 2031 | Dec 2031 |
| US 9,636,182 | In force no later than Nov 2029 | no later than Nov 2029 |
| US 8,795,162 | In force Dec 2029 | Dec 2029 |
| US 8,870,761 | In force no later than Nov 2029 | no later than Nov 2029 |
| US 8,936,551 | this patent Dec 2031 | Dec 2031 |
| US 9,833,295 | Lapsed on the fee record Dec 2025 | Dec 2025 |
8 of 17 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 27, 2013 Reel 31301, frame 199 | Vayser, Alex; Erismann, Fernando; Trauner, Kenneth B.; Gasson, Jonathan G.; Richardson, Derrick A. | Invuity, Inc. | Assignment of Assignor's Interest |
| Feb 28, 2014 Reel 32372, frame 240 | Invuity, Inc. | Healthcare Royalty Partners II, L.P. | Security Agreement |
| Jun 3, 2015 Reel 35819, frame 943 | Invuity, Inc. | Invuity, Inc. | Merger |
| Mar 17, 2017 Reel 42035, frame 801 | Healthcare Royalty Partners II, L.P. | Invuity, Inc. | Release of Security Interest |
| Mar 21, 2017 Reel 42052, frame 834 | Invuity, Inc. | Midcap Financial Trust, As Agent | Security Interest (Revolving Loan) |
| Mar 21, 2017 Reel 42053, frame 284 | Invuity, Inc. | Midcap Financial Trust, As Agent | Security Interest (TERM Loan) |
| Oct 23, 2018 Reel 47719, frame 34 | Midcap Financial Trust, As Agent | Invuity, Inc. | Release of Security Interest |
| Sep 21, 2026 Reel 76513, frame 803 | Invuity, Inc. | Stryker Corporation | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Dec 2031
Term ends Dec 16, 2031. No further fees fall due before then
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,568,304, ends no earlier than this term, so it caps nothing.
Citations
19
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.