24 patents currently held

4 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 2030. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

Ending by 2030

May 2030

Next term end

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030 203120322033203420352036 203720382039204020412042204320442045

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

Paper Filler Composition US 9,127,405

Cited by 56 later US patents, top 10% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2030.

Ends Nov 2030 · High confidence Also notable

Process for the Production of Nano-Fibrillar Cellulose Suspensions US 8,871,057

Cited by 58 later US patents, top 10% of utility patents granted in 2014 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2030. 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.

Ends no later than May 2030 · Low confidence Also notable

Paper and Paperboard Products US 10,214,859

Cited by 21 later US patents, top 25% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2037.

Ends Mar 2037 · High confidence

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 Nov 23, 2026
The maintenance fee for Compositions (US 11,655,594) comes due Nov 23, 2026. Unpaid by May 24, 2027, it lapses early.
1 fee due Dec 4, 2026
The maintenance fee for Paper Composition (US 10,309,060) comes due Dec 4, 2026. Unpaid by Jun 4, 2027, it lapses early.
2 fees due Feb 22, 2027
1 fee due Mar 8, 2027
The maintenance fee for Paper Filler Composition (US 9,127,405) comes due Mar 8, 2027. Unpaid by Sep 8, 2027, it lapses early.
1 fee due Apr 8, 2027
The maintenance fee for Re-Dispersed Microfibrillated Cellulose (US 10,435,482) comes due Apr 8, 2027. Unpaid by Oct 8, 2027, it lapses early.
1 fee due Jun 19, 2027
The maintenance fee for Process of Making Paper and Paperboard Products (US 11,846,072) comes due Jun 19, 2027. Unpaid by Dec 20, 2027, it lapses early.
1 fee due Aug 4, 2027
The maintenance fee for Method with a Horizontal Jet Applicator for a Paper Machine Wet End (US 10,550,520) comes due Aug 4, 2027. Unpaid by Feb 4, 2028, it lapses early.
2 fees due Sep 3 to 19, 2027 · next Sep 3
1 fee due Oct 30, 2027
The maintenance fee for Paper Filler Composition (US 11,970,817) comes due Oct 30, 2027. Unpaid by May 1, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

4 terms have ended since Aug 16, 2026

What they patent

The 5 largest of its 13 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Paper and Paperboard Products	5 in force	to Mar 2037
Paper Filler Composition	4 in force	to Nov 2030
Ceiling Tile Compositions Comprising Microfibrillated Cellulose and Methods for Making Same	2 in force	to Nov 2037
3D-FORMABLE Sheet Material	2 in force	to May 2037
Process for Treating Microfibrillated Cellulose	2 in force	to Feb 2036

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 8,231,764	Paper Filler Method In force Ends no later than May 17, 2030 · Medium confidence	In force	Ends no later than May 17, 2030	Medium confidence
US 11,732,411	Paper Filler Composition In force Term ends May 17, 2030 · Medium confidence	In force	Term ends May 17, 2030	Medium confidence
US 11,970,817	Paper Filler Composition In force Ends no later than May 17, 2030 · Medium confidence	In force	Ends no later than May 17, 2030	Medium confidence
US 8,871,057	Process for the Production of Nano-Fibrillar Cellulose Suspensions held by Fiberleantm Technologies Limited Grace period ended Ends no later than May 22, 2030 · Low confidence	Grace period ended	Ends no later than May 22, 2030	Low confidence
US 9,127,405	Paper Filler Composition In force Term ends Nov 2, 2030 · High confidence	In force	Term ends Nov 2, 2030	High confidence
US 10,253,457	Compositions In force Term ends Nov 9, 2031 · High confidence	In force	Term ends Nov 9, 2031	High confidence
US 11,655,594	Compositions In force Term ends Nov 9, 2031 · High confidence	In force	Term ends Nov 9, 2031	High confidence
US 10,309,060	Paper Composition In force Term ends Mar 12, 2034 · High confidence	In force	Term ends Mar 12, 2034	High confidence
US 12,018,433	Process for Treating Microfibrillated Cellulose In force Term ends Jul 27, 2034 · High confidence	In force	Term ends Jul 27, 2034	High confidence
US 11,572,658	Grinding Method and Grinding Medium In force Term ends Jan 14, 2036 · High confidence	In force	Term ends Jan 14, 2036	High confidence

10 of 24 patents shown.

Pro members see all 24.

Pro members: see all 24 patents

Also on record, not counted in the 24: 4 patents in force now held by others · 17 patents ended · 3 applications pending · 27 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.

Export every term end as CSV · Pro

Fiberlean Technologies Limited