Term ends Feb 11, 2035 · High confidence
20-year base term ends Oct 29, 2034
Held by Sigray, Inc.
Filed May 15, 2015 as application 14/712,917 · Granted Jan 23, 2018
Base term plus 105 days of patent term adjustment (USPTO delay)
Today
2014
2035
Clock starts
Oct 29, 2014
Oct 29, 2014
Term ends
Feb 11, 2035
Feb 11, 2035
Granted
Jan 23, 2018
Jan 23, 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
105
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.
78
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 105 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 Oct 29, 2014, when application 14/527,523, the earliest non-provisional in its chain, was filed (this one was filed May 15, 2015) | Oct 29, 2034 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +105 days, USPTO patent term adjustment record | Feb 11, 2035 | 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 | Feb 11, 2035 | High confidence |
This family
| US 9,089,707 | In force Jun 2029 | Jun 2029 |
| US 8,934,967 | In force Feb 2031 | Feb 2031 |
| US 8,489,185 | In force Jun 2029 | Jun 2029 |
| Application PCT/US2009/049321 | PCT application no patent term | no patent term |
| US 9,089,703 | In force Jun 2029 | Jun 2029 |
| US 8,700,145 | In force Jun 2029 | Jun 2029 |
| Application PCT/US2012/060131 | PCT application no patent term | no patent term |
| US 8,666,501 | In force Jun 2029 | Jun 2029 |
8 of 78 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 |
|---|---|---|---|
| Oct 9, 2015 Reel 36767, frame 536 | Yun, Wenbing; Lewis, Sylvia Jia Yun; Kirz, Janos | Sigray, Inc. | Nunc Pro Tunc Assignment |
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
Feb 2035
Term ends Feb 11, 2035. Maintenance fees still fall due before then
Note
The 105 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
105
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.