262 patents currently held
44 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.
The next term ends in Sep 2035. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
Sep 2035
Next term end
261
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 Aug 2038 · High confidence
Also notable
Ends Jan 2040 · High confidence
Also notable
Ends Nov 2040 · High confidence
Electric Wheelchair
US D996,304
Cited by 9 later US patents, top 25% of design patents granted in 2023 in our data. Protection runs to 2038.
Voice Conversion Training Method and Server and Computer Readable Storage Medium
US 11,282,503
Cited by 5 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2040.
Mechanical Arm
US 11,685,043
The newest of the three, granted 2023. It anchors the portfolio to 2040, later than anything else here.
Formerly held, still cited
Notable
Ends Jun 2041 · High confidence
Cited by 8 later US patents, top 25% of utility patents granted in 2022 in our data. Protection runs to 2041.
now held by Ubkang (Qingdao) Technology Co., Ltd.
Also notable
Ends Sep 2041 · Medium confidence
Cited by 4 later US patents, top 25% of utility patents granted in 2023 in our data. Protection runs to 2041.
now held by Ubkang (Qingdao) Technology Co., Ltd.
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.
- 3 fees due Nov 23, 2026
- 1 fee due Dec 27, 2026The maintenance fee for Mechanical Arm (US 11,685,043) comes due Dec 27, 2026. Unpaid by Jun 28, 2027, it lapses early.
- 5 fees due Jan 4 to 25, 2027 · next Jan 4
- 4 fees due Feb 1 to 15, 2027 · next Feb 1
- 2 fees due Mar 19, 2027
- 3 fees due Apr 3 to 17, 2027 · next Apr 3
- 1 fee due May 7, 2027The maintenance fee for Robotic Walking Assistant (US 11,806,303) comes due May 7, 2027. Unpaid by Nov 8, 2027, it lapses early.
- 4 fees due Jun 5 to 26, 2027 · next Jun 5
- 4 fees due Jul 2 to 23, 2027 · next Jul 2
- 2 fees due Aug 13 to 20, 2027 · next Aug 13
- 7 fees due Sep 5 to 26, 2027 · next Sep 5
- 2 fees due Oct 2 to 30, 2027 · next Oct 2
Recent changes
- 12 of the patents on this record were granted since Aug 16, 2026
- 2 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 261 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Electric Wheelchair | 2 in force | to Aug 2039 |
| Massage Motion Control Method, Robot Controller Using the Same, and Computer Readable Storage Medium | 1 in force | to Mar 2045 |
| Robot Joint Configuration Determining Method, Robot Using the Same and Computer Readable Storage Medium | 1 in force | to Jun 2044 |
| Automatic Cat Litter Box | 1 in force | to Feb 2044 |
| Linkage Mechanism, Robotic Finger and Robot | 1 in force | to Apr 2043 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US D896,291 | Robot In force · High confidence | In force | High confidence | |
| US D920,410 | Robot In force · High confidence | In force | High confidence | |
| US D920,411 | Robot In force · High confidence | In force | High confidence | |
| US D921,080 | Robot In force · High confidence | In force | High confidence | |
| US D921,081 | Robot In force · High confidence | In force | High confidence | |
| US D921,082 | Robot In force · High confidence | In force | High confidence | |
| US D921,083 | Robot In force · High confidence | In force | High confidence | |
| US D932,530 | Mechanical Arm In force · High confidence | In force | High confidence | |
| US 10,275,639 | Face Detecting and Tracking Method, Method for Controlling Rotation of Robot Head and Robot In force · High confidence | In force | High confidence | |
| US 10,211,768 | Control Method and Control Device of Direct Current Machine In force · High confidence | In force | High confidence |
Also on record, not counted in the 262: 44 patents in force now held by others · 2 patents ended · 57 applications pending · 19 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.