Term ends Sep 23, 2031 · High confidence
20-year base term ends Jun 8, 2031
Held by Fitbit, Inc.
Filed Jun 8, 2011 as application 13/156,304 · Granted Oct 27, 2015
Base term plus 107 days of patent term adjustment (USPTO delay)
Today
2011
2031
Clock starts
Jun 8, 2011
Jun 8, 2011
Term ends
Sep 23, 2031
Sep 23, 2031
Granted
Oct 27, 2015
Oct 27, 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
107
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.
132
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 107 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Jun 8, 2011, when this application, 13/156,304, was filed | Jun 8, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +107 days, USPTO patent term adjustment record | Sep 23, 2031 | 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 | Sep 23, 2031 | High confidence |
This family
| US 9,167,991 | this patent Sep 2031 | Sep 2031 |
| Application 13/167,742 | Abandoned not computed | not computed |
| US 8,180,591 | In force Jun 2031 | Jun 2031 |
| US 8,180,592 | In force Jun 2031 | Jun 2031 |
| US 8,386,008 | In force Jun 2031 | Jun 2031 |
| US 8,311,769 | In force Jun 2031 | Jun 2031 |
| US 8,311,770 | In force Jun 2031 | Jun 2031 |
| US 8,437,980 | In force Jun 2031 | Jun 2031 |
8 of 132 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 23, 2011 Reel 26502, frame 99 | Yuen, Shelten Gee Jao; Park, James; Friedman, Eric Nathan | Fitbit, Inc. | Assignment of Assignor's Interest |
| Aug 13, 2014 Reel 33532, frame 27 | Fitbit, Inc. | Morgan Stanley Senior Funding, Inc., as Collateral Agent | Security Interest |
| Aug 15, 2014 Reel 33546, frame 670 | Fitbit, Inc. | Silicon Valley Bank, As Administrative Agent | Security Interest |
| Dec 11, 2015 reel/frame not recorded | Morgan Stanley Senior Funding, Inc. | Fitstar, Inc. | Release of Security Interest in Patents |
| Dec 11, 2015 reel/frame not recorded | Morgan Stanley Senior Funding, Inc. | Fitbit, Inc. | Release of Security Interest in Patents |
| Dec 11, 2015 Reel 37269, frame 76 | Morgan Stanley Senior Funding, Inc. | Fitstar, Inc.; Fitbit, Inc. | Release of Security Interest in Patents |
| Dec 15, 2015 reel/frame not recorded | Silicon Valley Bank, As Administrative Agent | Fitstar, Inc. | Termination and Release of Security Interest in Patents |
| Dec 15, 2015 reel/frame not recorded | Silicon Valley Bank, As Administrative Agent | Fitbit, Inc. | Termination and Release of Security Interest in Patents |
| Dec 15, 2015 Reel 37300, frame 497 | Silicon Valley Bank, As Administrative Agent | Fitstar, Inc.; Fitbit, Inc. | Termination and Release of Security Interest in Patents |
| Oct 13, 2022 Reel 61411, frame 506 | Yuen, Shelten Gee Jao; Park, James; Friedman, Eric Nathan | Fitbit, 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
Sep 2031
Term ends Sep 23, 2031. Maintenance fees still fall due before then
Note
The 107 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
302
later US patents cite this one
That is top 1% 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.