Lapsed Sep 13, 2020 on the fee record · High confidence
20-year base term ends Apr 12, 2031
First maintenance fee unpaid; grace period ended.
Filed Aug 19, 2014 as application 14/463,522 · Granted Sep 13, 2016
Base term, 20 years from filing
Today
Lapsed Sep 13, 2020
2011
2031
Clock starts
Apr 12, 2011
Apr 12, 2011
No longer in force
Sep 13, 2020
Sep 13, 2020
Granted
Sep 13, 2016
Sep 13, 2016
Term would have run to
Apr 12, 2031
Apr 12, 2031
base term
after the term ends
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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,903,005, to Apr 12, 2031. The term already ends on or before that date, so the cap shortened nothing.
0 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 Apr 12, 2031: 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 Apr 12, 2011, when application 13/085,268, the earliest non-provisional in its chain, was filed (this one was filed Aug 19, 2014) | Apr 12, 2031 | 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 8,903,005) | resolves to Apr 12, 2031, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Sep 13, 2020 | High confidence |
| Computed term end | The steps above, in order | Sep 13, 2020 | High confidence |
This family
| US 8,833,005 | In force Apr 2031 | Apr 2031 |
| US 9,441,376 | this patent Sep 2020 | Sep 2020 |
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 |
|---|---|---|---|
| Jul 22, 2015 Reel 36156, frame 529 | Hanergy Holding Group Ltd. | Apollo Precision (Kunming) Yuanhong Limited | Assignment of Assignor's Interest |
| Mar 4, 2016 Reel 37896, frame 10 | Apollo Precision (Kunming) Yuanhong Limited | Beijing Apollo Ding Rong Solar 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,903,005, ends no earlier than this term, so it caps nothing.
Citations
3
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.