38 patents currently held
2 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 May 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
10
Ending by 2030
May 2027
Next term end
38
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 Sep 2036 · High confidence
Also notable
Ends Jun 2039 · High confidence
Gateway Device and Sensor Data Collection System
US 10,187,470
Cited by 11 later US patents, top 25% of utility patents granted in 2019 in our data. Protection runs to 2035.
Method and Device for Managing Communication Message Verification Process in Communication System Containing Plurality of Nodes
US 10,389,734
The earliest of the three still in force, granted 2019 and renewed since. Its term ends first, in 2036.
Aerial Line Extraction System and Method
US 11,495,026
The newest of the three, granted 2022. It anchors the portfolio to 2039, later than anything else here.
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.
- 1 fee due Dec 4, 2026The maintenance fee for File Management Apparatus (US 10,311,041) comes due Dec 4, 2026. Unpaid by Jun 4, 2027, it lapses early.
- 1 fee due Jan 21, 2027The maintenance fee for Encryption Key Management Program, Data Management System (US 9,088,557) comes due Jan 21, 2027. Unpaid by Jul 21, 2027, it lapses early.
- 2 fees due Feb 1 to 20, 2027 · next Feb 1
- 2 fees due Apr 6 to 8, 2027 · next Apr 6
- 1 fee due May 17, 2027The maintenance fee for Pixel Analysis and Image Transformation Device and Method (US 9,189,877) comes due May 17, 2027. Unpaid by Nov 17, 2027, it lapses early.
- 2 fees due Nov 3 to 7, 2027 · next Nov 3
Recent changes
- Nov 4Assignment recorded on US 12,418,412: Hitachi Solutions, Ltd. to The Governing Council of the University of Toronto Recorded Nov 4, 2026, executed Sep 28, 2026. Conveyance as recorded: Assignment of Assignor's Interest. A recorded assignment is a filed document, not a statement of current ownership. Reel 76629, frame 777.
- 1 of the patents on this record was granted since Aug 16, 2026
- 1 term has ended since Aug 16, 2026
What they patent
The 5 largest of its 38 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| AI Quality Monitoring System | 1 in force | to Jun 2043 |
| Dialogue Management Apparatus, Dialogue Management System, and Dialogue Management Method | 1 in force | to Mar 2043 |
| Sex Determination Device and Sex Determination Method | 1 in force | to Oct 2042 |
| Data Collection System | 1 in force | to Jan 2042 |
| Conversion Apparatus, Conversion Method, and Recording Medium | 1 in force | to Jun 2041 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,650,047 | Change Detection Equipment and Method of Image Recognition In force · High confidence | In force | High confidence | |
| US 7,668,817 | Method and System for Data Processing with Spatial Search In force · High confidence | In force | High confidence | |
| US D687,830 | Reflective Pen for Interactive White Board In force · High confidence | In force | High confidence | |
| US D708,182 | Digitizer for Interactive Whiteboard In force · High confidence | In force | High confidence | |
| US D712,478 | Reflective Bar for Interactive Whiteboard In force · High confidence | In force | High confidence | |
| US D716,809 | Digitizer for Interactive White Board In force · High confidence | In force | High confidence | |
| US 8,307,408 | System and Method for File Processing and File Processing Program In force · High confidence | In force | High confidence | |
| US 8,289,186 | Method and Apparatus for Ad-Hoc Network Broadcast Communication In force · High confidence | In force | High confidence | |
| US 8,284,431 | Printing Management System, Printing Management Method, and Program In force · High confidence | In force | High confidence | |
| US 8,271,756 | Content Approving Apparatus In force · High confidence | In force | High confidence |
Also on record, not counted in the 38: 2 patents in force now held by others · 73 patents ended · 10 applications pending · 55 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.