Term ends Mar 29, 2032 · High confidence
20-year base term ends May 31, 2031
Held by Taiwan Space Agency
Filed May 31, 2011 as application 13/149,208 · Granted Sep 20, 2016
Base term plus 303 days of patent term adjustment (USPTO delay)
Today
2011
2032
Clock starts
May 31, 2011
May 31, 2011
Term ends
Mar 29, 2032
Mar 29, 2032
Granted
Sep 20, 2016
Sep 20, 2016
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
303
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.
31
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 303 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 May 31, 2011, when this application, 13/149,208, was filed | May 31, 2031 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +303 days, USPTO patent term adjustment record | Mar 29, 2032 | 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 | Mar 29, 2032 | High confidence |
This family
| US 8,236,154 | In force Sep 2030 | Sep 2030 |
| Application 12/277,772 | Abandoned not computed | not computed |
| Application 12/358,938 | Abandoned not computed | not computed |
| US 9,448,116 | this patent Mar 2032 | Mar 2032 |
| US 8,744,222 | In force Feb 2032 | Feb 2032 |
| Application PCT/US2012/034525 | PCT application no patent term | no patent term |
| US 9,649,323 | In force Jan 2035 | Jan 2035 |
| Application PCT/US2012/053050 | PCT application no patent term | no patent term |
8 of 31 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 |
|---|---|---|---|
| May 31, 2011 reel/frame not recorded | Chung, Yi-fan; Liu, Ren-young; Lo, Yu-lung; Yen, Chih-chung | National Applied Research Laboratories | Assignment of Assignor's Interest |
| May 31, 2011 reel/frame not recorded | Chung, Yi-fan; Liu, Ren-young; Lo, Yu-lung; Yen, Chih-chung | National Cheng Kung University | Assignment of Assignor's Interest |
| May 31, 2011 Reel 26363, frame 335 | Lo, Yu-lung; Liu, Ren-young; Yen, Chih-chung; Chung, Yi-fan | National Applied Research Laboratories; National Cheng Kung University | Assignment of Assignor's Interest |
| Aug 29, 2023 Reel 64736, frame 365 | National Applied Research Laboratories | Taiwan Space Agency | 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
Mar 2032
Term ends Mar 29, 2032. Maintenance fees still fall due before then
Note
The 303 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below the median of utility patents granted in 2016 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.