Maintenance fees coming due

Fiberlean Technologies Limited

11 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 23, 2026. Unpaid by May 24, 2027, that one lapses early.

A maintenance fee does not end a patent on its due date. It falls due at 3.5, 7.5 and 11.5 years from grant, and the patent lapses only if the fee is still unpaid at the end of the six month grace period that follows.

Patent	Title	Holder	Status	Fee due	Lapses if unpaid	Expires	Confidence
US 11,655,594	Compositions Fiberlean Technologies Limited In force Fee due Nov 23, 2026 Lapses if unpaid May 24, 2027 Term ends Nov 9, 2031 · High confidence	Fiberlean Technologies Limited	In force	Nov 23, 2026	May 24, 2027	Term ends Nov 9, 2031	High confidence
US 10,309,060	Paper Composition Fiberlean Technologies Limited In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Mar 12, 2034 · High confidence	Fiberlean Technologies Limited	In force	Dec 4, 2026	Jun 4, 2027	Term ends Mar 12, 2034	High confidence
US 11,732,411	Paper Filler Composition Fiberlean Technologies Limited In force Fee due Feb 22, 2027 Lapses if unpaid Aug 23, 2027 Term ends May 17, 2030 · Medium confidence	Fiberlean Technologies Limited	In force	Feb 22, 2027	Aug 23, 2027	Term ends May 17, 2030	Medium confidence
US 11,732,421	Method of Making Paper or Board Products Fiberlean Technologies Limited In force Fee due Feb 22, 2027 Lapses if unpaid Aug 23, 2027 Term ends Mar 31, 2037 · Low confidence	Fiberlean Technologies Limited	In force	Feb 22, 2027	Aug 23, 2027	Term ends Mar 31, 2037	Low confidence
US 9,127,405	Paper Filler Composition Fiberlean Technologies Limited In force Fee due Mar 8, 2027 Lapses if unpaid Sep 8, 2027 Term ends Nov 2, 2030 · High confidence	Fiberlean Technologies Limited	In force	Mar 8, 2027	Sep 8, 2027	Term ends Nov 2, 2030	High confidence
US 10,435,482	Re-Dispersed Microfibrillated Cellulose Fiberlean Technologies Limited In force Fee due Apr 8, 2027 Lapses if unpaid Oct 8, 2027 Term ends Dec 28, 2037 · High confidence	Fiberlean Technologies Limited	In force	Apr 8, 2027	Oct 8, 2027	Term ends Dec 28, 2037	High confidence
US 11,846,072	Process of Making Paper and Paperboard Products Fiberlean Technologies Limited In force Fee due Jun 19, 2027 Lapses if unpaid Dec 20, 2027 Term ends Mar 31, 2037 · High confidence	Fiberlean Technologies Limited	In force	Jun 19, 2027	Dec 20, 2027	Term ends Mar 31, 2037	High confidence
US 10,550,520	Method with a Horizontal Jet Applicator for a Paper Machine Wet End Fiberlean Technologies Limited In force Fee due Aug 4, 2027 Lapses if unpaid Feb 4, 2028 Term ends Mar 29, 2039 · High confidence	Fiberlean Technologies Limited	In force	Aug 4, 2027	Feb 4, 2028	Term ends Mar 29, 2039	High confidence
US 10,577,469	3D-FORMABLE Sheet Material Fiberlean Technologies Limited In force Fee due Sep 3, 2027 Lapses if unpaid Mar 3, 2028 Term ends May 31, 2037 · High confidence	Fiberlean Technologies Limited	In force	Sep 3, 2027	Mar 3, 2028	Term ends May 31, 2037	High confidence
US 11,932,740	3D-FORMABLE Sheet Material Fiberlean Technologies Limited In force Fee due Sep 19, 2027 Lapses if unpaid Mar 20, 2028 Term ends Oct 13, 2036 · High confidence	Fiberlean Technologies Limited	In force	Sep 19, 2027	Mar 20, 2028	Term ends Oct 13, 2036	High confidence
1 more maintenance fee coming due in the 12 months from Nov 14, 2026 · Pro

10 of 11 patents shown. Soonest fee due date first, then patent number.

Pro members see every patent with a maintenance fee coming due: number, title, status, the due date, and the date it lapses if the fee goes unpaid through the grace period.

Upgrade to Pro

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.