Lapsed Apr 25, 2025 on the fee record · High confidence
20-year base term ends Aug 13, 2030
Second maintenance fee unpaid; grace period ended.
Filed Oct 12, 2015 as application 14/881,105 · Granted Apr 25, 2017
Base term, 20 years from filing
Today
Lapsed Apr 25, 2025
2010
2030
Clock starts
Aug 13, 2010
Aug 13, 2010
No longer in force
Apr 25, 2025
Apr 25, 2025
Granted
Apr 25, 2017
Apr 25, 2017
Term would have run to
Aug 13, 2030
Aug 13, 2030
base term
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 9,158,649, to Aug 13, 2030. The term already ends on or before that date, so the cap shortened nothing.
1 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.
2
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Aug 13, 2030: 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. 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 Aug 13, 2010, when application 12/855,839, the earliest non-provisional in its chain, was filed (this one was filed Oct 12, 2015) | Aug 13, 2030 | 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 9,158,649) | resolves to Aug 13, 2030, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Apr 25, 2025 | High confidence |
| Computed term end | The steps above, in order | Apr 25, 2025 | High confidence |
This family
| US 9,158,649 | In force Aug 2032 | Aug 2032 |
| US 9,634,915 | this patent Apr 2025 | Apr 2025 |
The applications whose file history this site holds. The family may have others.
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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,158,649, ends no earlier than this term, so it caps nothing.
Citations
122
later US patents cite this one
That is top 5% of utility patents granted in 2017 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.