Term ends Jan 14, 2034 · High confidence
20-year base term ends Dec 7, 2032
Filed Dec 7, 2012 as application 13/707,837 · Granted Jun 30, 2015
Base term plus 403 days of patent term adjustment (USPTO delay)
Today
2012
2034
Clock starts
Dec 7, 2012
Dec 7, 2012
Term ends
Jan 14, 2034
Jan 14, 2034
Granted
Jun 30, 2015
Jun 30, 2015
base term
patent term adjustment
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
403
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
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.
3
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 403 days past its 20-year base term on prosecution delay. 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 7, 2012, when this application, 13/707,837, was filed | Dec 7, 2032 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +403 days, USPTO patent term adjustment record | Jan 14, 2034 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jan 14, 2034 | High confidence |
This family
| US 9,072,190 | this patent Jan 2034 | Jan 2034 |
| US 9,072,194 | In force Sep 2033 | Sep 2033 |
| US 9,144,174 | In force Dec 2032 | Dec 2032 |
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 |
|---|---|---|---|
| Dec 7, 2012 Reel 29459, frame 306 | Chen, Ken-ching; Yang, Shun-ho; Huang, Chien-li; Wang, Chun-chiang | King Slide Works Co., Ltd.; King Slide Technology Co., Ltd. | Assignment of Assignor's Interest |
| Dec 7, 2012 reel/frame not recorded | Chen, Ken-ching; Huang, Chien-li; Wang, Chun-chiang; Yang, Shun-ho | King Slide Works Co., Ltd. | Assignment of Assignor's Interest |
| Dec 7, 2012 reel/frame not recorded | Chen, Ken-ching; Huang, Chien-li; Wang, Chun-chiang; Yang, Shun-ho | King Slide Technology Co., Ltd. | 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
Jan 2034
Term ends Jan 14, 2034. No further fees fall due before then
Note
The 403 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
20
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.