228 patents currently held
15 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 Oct 2027. from the record
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
32
Ending by 2030
Oct 2027
Next term end
189
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 Oct 2036 · High confidence
Also notable
Ends Oct 2039 · High confidence
Also notable
Ends Nov 2029 · High confidence
Box for Shavers
US D934,071
The most cited patent in this portfolio, cited by 19 later US patents, top 25% of design patents granted in 2021 in our data. Protection runs to 2036.
Thermochromic Pigment Composition
US 11,629,256
The newest of the three, granted 2023. It anchors the portfolio to 2039, later than anything else here.
Hydrogen Membrane Separator
US 9,005,344
The largest patent family in this portfolio, 6 related applications, renewed at every maintenance window due so far. Protection runs to 2029. A terminal disclaimer caps this term to an earlier patent's.
Formerly held, still cited
Notable
Ends Oct 2032 · High confidence
The largest patent family in this portfolio, 6 related applications, renewed at every maintenance window due so far. Protection runs to 2032.
now held by Intelligent Energy 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.
- 4 fees due Nov 23 to 30, 2026 · next Nov 23
- 3 fees due Dec 2 to 27, 2026 · next Dec 2
- 1 fee due Jan 16, 2027The maintenance fee for Razors and Razor Blade Cartridges and Methods of Manufacturing Therefore (US 10,350,773) comes due Jan 16, 2027. Unpaid by Jul 16, 2027, it lapses early.
- 4 fees due Feb 6 to 15, 2027 · next Feb 6
- 2 fees due Mar 26, 2027
- 5 fees due Apr 1 to 30, 2027 · next Apr 1
- 4 fees due May 7 to 21, 2027 · next May 7
- 1 fee due Jul 9, 2027The maintenance fee for Lead Casing for Pencil, and Pencil Thereof for Writing, Drawing, Marking, Plotting, and Coloring (US 11,865,855) comes due Jul 9, 2027. Unpaid by Jan 10, 2028, it lapses early.
- 3 fees due Aug 6 to 13, 2027 · next Aug 6
- 4 fees due Sep 5 to 30, 2027 · next Sep 5
- 1 fee due Oct 28, 2027The maintenance fee for Writing Instrument with Retractable Tip Comprising a Pad for Capacitive Screen (US 10,635,203) comes due Oct 28, 2027. Unpaid by Apr 28, 2028, it lapses early.
- 2 fees due Nov 3 to 5, 2027 · next Nov 3
Recent changes
- 1 of the patents on this record was granted since Aug 16, 2026
- 10 terms have ended since Aug 16, 2026
What they patent
The 5 largest of its 189 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.
| Articulation-Loadable Writing Instrument | 9 in force | to Jan 2033 |
| Shaver Handle (2016) | 6 in force | to Apr 2033 |
| Flame Producing Assembly and Method for Manufacturing Such a Flame Producing Assembly | 4 in force | to Aug 2038 |
| Shaver Handle (2014) | 4 in force | to Aug 2030 |
| Charger for Shaver | 3 in force | to Feb 2041 |
Patents held now
Soonest term end first.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US D692,054 | Writing Instrument In force · High confidence | In force | High confidence | |
| US D692,481 | Writing Instrument In force · High confidence | In force | High confidence | |
| US D692,948 | Writing Instrument or Stylus In force · High confidence | In force | High confidence | |
| US 7,938,729 | Frictional Clutch with O-Ring In force · High confidence | In force | High confidence | |
| US 7,934,883 | Writing Instrument Comprising a Cartridge Support In force · High confidence | In force | High confidence | |
| US D703,663 | Touch Screen Tablet In force · High confidence | In force | High confidence | |
| US 8,550,735 | Writing Instrument with Cushioning Device In force · High confidence | In force | High confidence | |
| US 7,993,068 | Articulation-Loadable Writing Instrument In force · High confidence | In force | High confidence | |
| US D718,312 | Writing Instrument or Stylus In force · High confidence | In force | High confidence | |
| US 7,743,810 | Correction System with Rubber Eleastic Tension Element for a Gear Mechanism Correction Tape In force · High confidence | In force | High confidence |
Also on record, not counted in the 228: 15 patents in force now held by others · 238 patents ended · 25 applications pending · 57 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.