6,320 patents currently held
26 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1 more record may belong here and awaits a decision; it is not counted.
The next term ends in Nov 2026. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
522
Ending by 2030
Nov 2026
Next term end
5,701
Patent families
When these terms end
Held patents by the year their term ends
notable patents
fee due within 90 days
all others
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
Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Nov 2035 · High confidence
Also notable
Ends Apr 2036 · High confidence
Also notable
Ends May 2034 · High confidence
Positive Electrode Active Material for Lithium Secondary Battery, Method of Preparing the Same and Lithium Secondary Battery Including the Same
US 10,998,548
Cited by 41 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2035.
Nanoporous Separators for Batteries and Related Manufacturing Methods
US 11,355,817
Cited by 17 later US patents, top 10% of utility patents granted in 2022 in our data. Protection runs to 2036.
Anode for Lithium Secondary Battery and Lithium Secondary Battery Including the Same
US 9,583,756
Cited by 45 later US patents, top 10% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2034.
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 68 fees due Dec 2 to 30, 2026 · next Dec 2
- 71 fees due Jan 2 to 30, 2027 · next Jan 2
- 80 fees due Feb 1 to 28, 2027 · next Feb 1
- 91 fees due Mar 1 to 29, 2027 · next Mar 1
- 100 fees due Apr 1 to 30, 2027 · next Apr 1
- 98 fees due May 3 to 28, 2027 · next May 3
- 96 fees due Jun 1 to 30, 2027 · next Jun 1
- 108 fees due Jul 2 to 30, 2027 · next Jul 2
- 83 fees due Aug 2 to 27, 2027 · next Aug 2
- 118 fees due Sep 1 to 30, 2027 · next Sep 1
- 128 fees due Oct 2 to 30, 2027 · next Oct 2
- 47 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- Nov 9Assignment recorded on 1 record: Lee, Sang-Joon and 7 others to LG Energy Solution, Ltd. Recorded Nov 9, 2026, executed Jul 20, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76685, frame 99.
- Nov 6Assignment recorded on 1 record: Lee, Jung Hoon and 1 other to LG Energy Solution, Ltd. Recorded Nov 6, 2026, executed Sep 16, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76661, frame 704.
- 284 of the patents on this record were granted since Aug 16, 2026
- 19 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 5,701 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Battery for Portable Terminal | 34 in force | to Oct 2031 |
| Anode Including Silicon-Based Material and Carbon Material, and Lithium Secondary Battery Including the Same | 25 in force | to Mar 2037 |
| Separators for electrochemical cells | 22 in force | to Oct 2038 |
| Manufacturing Method for Electrode Assembly and Electrode Assembly Manufacturing Equipment | 19 in force | to Jun 2044 |
| Positive Electrode Active Material for Lithium Secondary Battery, Method of Preparing the Same and Lithium Secondary Battery Including the Same | 19 in force | to Nov 2042 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,955,726 | Battery Module of High Cooling Efficiency In force · High confidence | In force | High confidence | |
| US 7,745,056 | Electrolyte for Lithium Secondary Battery Comprising Chelating Agent and Lithium Secondary Battery Using the Same In force · High confidence | In force | High confidence | |
| US 7,462,417 | Connecting Structure for Electrical Connection of PCM and Battery Cell and Secondary Battery Pack Containing the Same In force · High confidence | In force | High confidence | |
| US 7,507,498 | Secondary Battery Module Having Piezo Sensor In force · High confidence | In force | High confidence | |
| US 7,834,595 | Multi Battery Pack System, Control Method Thereof, and Battery Pack Using the Same In force · High confidence | In force | High confidence | |
| US 8,018,205 | Multi Battery Pack System, Control Method Thereof, and Battery Pack Using the Same In force · High confidence | In force | High confidence | |
| US 9,065,152 | Secondary battery with an improved safety In force · High confidence | In force | High confidence | |
| US 7,759,006 | Electrode Active Material for Lithium Secondary Battery In force · High confidence | In force | High confidence | |
| US 7,453,236 | Battery Pack of Automatically Setting Master and Slave Pack, Multi-Battery Pack System Including the Same and Method for Controlling the Same In force · High confidence | In force | High confidence | |
| US 8,114,537 | Frame Member and Battery Pack Employed with the Same In force · High confidence | In force | High confidence |
Also on record, not counted in the 6,320: 26 patents in force now held by others · 142 patents ended · 6,305 applications pending · 102 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.