Lapsed Apr 4, 2025 on the fee record · Medium confidence
20-year base term ends Jul 18, 2033
Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 9,689,854), so the cap could be lower.
Second maintenance fee unpaid; grace period ended.
Held by Lin Han Inc.
Filed Feb 10, 2015 as application 14/618,713 · Granted Apr 4, 2017
Base term, 20 years from filing, plus 37 days of patent term adjustment (USPTO delay)
Today
Lapsed Apr 4, 2025
2013
2033
Clock starts
Jul 18, 2013
Jul 18, 2013
No longer in force
Apr 4, 2025
Apr 4, 2025
Granted
Apr 4, 2017
Apr 4, 2017
Term would have run to
Aug 24, 2033
Aug 24, 2033
base term
patent term adjustment
after the term ends
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
37
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 9,689,854, to Aug 24, 2033. 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.
3
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 24, 2033: its 20-year base term plus 37 days of term 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: Medium. 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 Jul 18, 2013, when application 13/945,237, the earliest non-provisional in its chain, was filed (this one was filed Feb 10, 2015) | Jul 18, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +37 days, USPTO patent term adjustment record | Aug 24, 2033 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,689,854) | resolves to Aug 24, 2033, no earlier than this term, so no change | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Apr 4, 2025 | High confidence |
| Computed term end | The steps above, in order | Apr 4, 2025 | Medium confidence |
This family
| US 9,063,128 | In force no later than Sep 2033 | no later than Sep 2033 |
| US 9,689,854 | In force no later than Apr 2034 | no later than Apr 2034 |
| US 9,612,203 | this patent Apr 2025 | Apr 2025 |
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 |
|---|---|---|---|
| Feb 12, 2015 Reel 34949, frame 55 | Kuan, Chen-meng; York, Roger L.; Langer, Robert S.; Cheng, Chao-min | National Tsing Hua University | Assignment of Assignor's Interest |
| Sep 12, 2022 Reel 61064, frame 682 | National Tsing Hua University | Lin Han 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.
What's changing
Note
The 37 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 9,689,854, ends no earlier than this term, so it caps nothing.
Citations
0
later US patents cite this one
That is below the median 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.