Maintenance fees coming due

Valmet Technologies, Inc.

46 maintenance fees come due in the 12 months from Nov 15, 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 11,655,589	A Method and a System for Adjusting PH of Green Liquor Dregs Valmet Technologies Oy In force Fee due Nov 23, 2026 Lapses if unpaid May 24, 2027 Term ends Aug 18, 2040 · High confidence	Valmet Technologies Oy	In force	Nov 23, 2026	May 24, 2027	Term ends Aug 18, 2040	High confidence
US 10,300,489	Blade Element for Refiner Valmet Technologies, Inc. In force Fee due Nov 28, 2026 Lapses if unpaid May 28, 2027 Term ends Jan 14, 2038 · High confidence	Valmet Technologies, Inc.	In force	Nov 28, 2026	May 28, 2027	Term ends Jan 14, 2038	High confidence
US 9,050,602	Refining Surface for a Refiner Valmet Technologies, Inc. In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Aug 29, 2032 · High confidence	Valmet Technologies, Inc.	In force	Dec 9, 2026	Jun 9, 2027	Term ends Aug 29, 2032	High confidence
US 9,051,146	Method and Device for Winding of Fiber Webs, Especially of Partial Paper and Board Webs Valmet Technologies, Inc. In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Nov 9, 2033 · High confidence	Valmet Technologies, Inc.	In force	Dec 9, 2026	Jun 9, 2027	Term ends Nov 9, 2033	High confidence
US 9,052,106	Method and Arrangement for Optimising Combustion Conditions in a Fluidised-Bed Boiler Valmet Technologies Oy In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Jul 30, 2032 · High confidence	Valmet Technologies Oy	In force	Dec 9, 2026	Jun 9, 2027	Term ends Jul 30, 2032	High confidence
US 10,358,607	Filter and Filtering Arrangement Valmet Technologies Oy In force Fee due Jan 23, 2027 Lapses if unpaid Jul 23, 2027 Term ends Jan 17, 2037 · High confidence	Valmet Technologies Oy	In force	Jan 23, 2027	Jul 23, 2027	Term ends Jan 17, 2037	High confidence
US 11,707,742	Refiner Disc and Hub Assembly Valmet Technologies Oy In force Fee due Jan 25, 2027 Lapses if unpaid Jul 26, 2027 Term ends Aug 23, 2041 · High confidence	Valmet Technologies Oy	In force	Jan 25, 2027	Jul 26, 2027	Term ends Aug 23, 2041	High confidence
US 11,725,344	Fiber Web Machine Sleeve Roll Belt Valmet Technologies Oy In force Fee due Feb 15, 2027 Lapses if unpaid Aug 16, 2027 Ends no later than Oct 9, 2041 · Medium confidence	Valmet Technologies Oy	In force	Feb 15, 2027	Aug 16, 2027	Ends no later than Oct 9, 2041	Medium confidence
US 11,732,587	Blade Element Valmet Technologies, Inc. In force Fee due Feb 22, 2027 Lapses if unpaid Aug 23, 2027 Term ends Apr 28, 2042 · High confidence	Valmet Technologies, Inc.	In force	Feb 22, 2027	Aug 23, 2027	Term ends Apr 28, 2042	High confidence
US 9,133,579	Refiner and Blade Element Valmet Technologies, Inc. In force Fee due Mar 15, 2027 Lapses if unpaid Sep 15, 2027 Term ends Jun 25, 2032 · High confidence	Valmet Technologies, Inc.	In force	Mar 15, 2027	Sep 15, 2027	Term ends Jun 25, 2032	High confidence
36 more maintenance fees coming due in the 12 months from Nov 15, 2026 · Pro

10 of 46 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.

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