3 patents currently held
215 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.
21 more records may belong here and await a decision; they are not counted.
The next term ends in May 2032. from the record
Of the 215 now held by other companies, 215 name Memjet Technology Limited as their current owner. Each row says so.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
May 2032
Next term end
3
Patent families
When these terms end
Held patents by the year their term ends
notable patents
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.
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Notable
Ends Mar 2035 · High confidence
Also notable
Ends May 2032 · High confidence
Also notable
Ends Jun 2033 · High confidence
Printer Configured for Optimized Printing
US 9,272,523
Granted 2016 and renewed at every maintenance window due so far. Protection runs to 2035.
Ink Set for Reducing Printhead Corrosion
US 8,939,544
Granted 2015 and renewed at every maintenance window due so far. Protection runs to 2032.
Printer Having Ink Delivery System with Air Compliance Chamber
US 8,926,072
Renewed at every maintenance window since the 2015 grant; no more fees are due before its term ends in 2033.
Formerly held, still cited
Notable
Ends Jan 2027 · High confidence
Cited by 38 later US patents, top 25% of utility patents granted in 2008 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
now held by Memjet Technology Limited
Also notable
Ends Apr 2027 · High confidence
The largest patent family in this portfolio, 1546 related applications, renewed at 3 of 3 maintenance windows. Protection runs to 2027. A terminal disclaimer caps this term to an earlier patent's.
now held by Memjet Technology Limited
Also notable
Ends no later than Feb 2027 · Medium confidence
The largest patent family in this portfolio, 10 related applications, renewed at 3 of 3 maintenance windows. Protection runs to 2027. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
now held by Memjet Technology Limited
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 Sep 1, 2027The maintenance fee for Printer Configured for Optimized Printing (US 9,272,523) comes due Sep 1, 2027. Unpaid by Mar 1, 2028, it lapses early.
Recent changes
- 38 terms have ended since Aug 16, 2026
What they patent
The 1 largest of its 3 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Ink Set for Reducing Printhead Corrosion | 1 in force | to May 2032 |
Patents held now
Soonest term end first.
Showing 1 to 3 of 3
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,939,544 | Ink Set for Reducing Printhead Corrosion In force · High confidence | In force | High confidence | |
| US 8,926,072 | Printer Having Ink Delivery System with Air Compliance Chamber held by Memjet Technology Limited In force · High confidence | In force | High confidence | |
| US 9,272,523 | Printer Configured for Optimized Printing held by Memjet Technology Limited In force · High confidence | In force | High confidence |
Also on record, not counted in the 3: 215 patents in force now held by others · 2,852 patents ended · 378 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.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.