Term ends no later than Mar 4, 2037 · Medium confidence
20-year base term ends Oct 2, 2035
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by LG Energy Solution, Ltd.
Filed Apr 6, 2021 as application 17/223,355 · Granted Aug 20, 2024
Base term plus 519 days of patent term adjustment (USPTO delay)
Today
2015
2037
Clock starts
Oct 2, 2015
Oct 2, 2015
Ends no later than
Mar 4, 2037
Mar 4, 2037
Granted
Aug 20, 2024
Aug 20, 2024
base term
patent term adjustment
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
519
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
55
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 519 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 0 of 3 maintenance fees are paid so far. 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 Oct 2, 2015, when application PCT/KR2015/010447, the earliest non-provisional in its chain, was filed (this one was filed Apr 6, 2021) | Oct 2, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +519 days, USPTO patent term adjustment record | Mar 4, 2037 | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | no later than Mar 4, 2037 | Medium confidence |
This family
| US 10,998,548 | In force Nov 2035 | Nov 2035 |
| US 12,068,478 | this patent no later than Mar 2037 | no later than Mar 2037 |
| US 12,384,271 | In force Jul 2042 | Jul 2042 |
| US 12,136,736 | In force Feb 2041 | Feb 2041 |
| Application 17/780,642 | Pending not computed | not computed |
| US 12,051,773 | In force May 2041 | May 2041 |
| US 11,990,584 | In force Nov 2041 | Nov 2041 |
| US 12,278,359 | In force Dec 2040 | Dec 2040 |
8 of 55 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 |
|---|---|---|---|
| Apr 7, 2021 Reel 55848, frame 669 | Jo, Chi Ho; Ryu, Ji Hoon; Kang, Min Suk; Shin, Sun Sik; Jung, Wang Mo | LG Chem, Ltd. | Assignment of Assignor's Interest |
| Nov 4, 2021 Reel 58295, frame 68 | LG Chem, Ltd. | LG Energy Solution, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Mar 2037
Term ends no later than Mar 4, 2037. Maintenance fees still fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Note
The 519 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Mar 4, 2037. We will not guess the cap.
Citations
0
later US patents cite this one
Fewer than half of the utility patents granted in 2024 in our data have been cited yet, so we show the count and do not rank on it.
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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.