Maintenance fees coming due

Hitachi Solutions, Ltd.

9 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Dec 4, 2026. Unpaid by Jun 4, 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 10,311,041	File Management Apparatus Hitachi Solutions, Ltd. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Dec 5, 2036 · High confidence	Hitachi Solutions, Ltd.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Dec 5, 2036	High confidence
US 9,088,557	Encryption Key Management Program, Data Management System Hitachi Solutions, Ltd. In force Fee due Jan 21, 2027 Lapses if unpaid Jul 21, 2027 Term ends Oct 1, 2033 · High confidence	Hitachi Solutions, Ltd.	In force	Jan 21, 2027	Jul 21, 2027	Term ends Oct 1, 2033	High confidence
US 11,715,055	Manufacture and Sales Strategy Planning Method and Device Thereof Hitachi, Ltd. and Hitachi Solutions, Ltd. In force Fee due Feb 1, 2027 Lapses if unpaid Aug 2, 2027 Term ends Sep 18, 2041 · High confidence	Hitachi, Ltd. and Hitachi Solutions, Ltd.	In force	Feb 1, 2027	Aug 2, 2027	Term ends Sep 18, 2041	High confidence
US 10,389,734	Method and Device for Managing Communication Message Verification Process in Communication System Containing Plurality of Nodes Hitachi Solutions, Ltd. In force Fee due Feb 20, 2027 Lapses if unpaid Aug 20, 2027 Term ends Sep 11, 2036 · High confidence	Hitachi Solutions, Ltd.	In force	Feb 20, 2027	Aug 20, 2027	Term ends Sep 11, 2036	High confidence
US 9,154,802	Emergable Watermark Superimposing Method, Emergable Watermark Superimposing Apparatus, and Emergable Watermark Superimposing System Hitachi Solutions, Ltd. In force Fee due Apr 6, 2027 Lapses if unpaid Oct 6, 2027 Term ends Nov 26, 2033 · High confidence	Hitachi Solutions, Ltd.	In force	Apr 6, 2027	Oct 6, 2027	Term ends Nov 26, 2033	High confidence
US 10,437,982	Communication Management Method and Communication Management System Hitachi Solutions, Ltd. In force Fee due Apr 8, 2027 Lapses if unpaid Oct 8, 2027 Term ends Dec 11, 2036 · High confidence	Hitachi Solutions, Ltd.	In force	Apr 8, 2027	Oct 8, 2027	Term ends Dec 11, 2036	High confidence
US 9,189,877	Pixel Analysis and Image Transformation Device and Method Hitachi Solutions, Ltd. In force Fee due May 17, 2027 Lapses if unpaid Nov 17, 2027 Term ends Jan 8, 2033 · High confidence	Hitachi Solutions, Ltd.	In force	May 17, 2027	Nov 17, 2027	Term ends Jan 8, 2033	High confidence
US 9,329,704	Information Input Apparatus, Information Input System, and Information Input Method Hitachi Solutions, Ltd. In force Fee due Nov 3, 2027 Lapses if unpaid May 3, 2028 Term ends Sep 9, 2032 · High confidence	Hitachi Solutions, Ltd.	In force	Nov 3, 2027	May 3, 2028	Term ends Sep 9, 2032	High confidence
US 11,979,231	Conversion Apparatus, Conversion Method, and Recording Medium Hitachi Solutions, Ltd. In force Fee due Nov 7, 2027 Lapses if unpaid May 8, 2028 Term ends Jun 26, 2041 · High confidence	Hitachi Solutions, Ltd.	In force	Nov 7, 2027	May 8, 2028	Term ends Jun 26, 2041	High confidence

9 of 9 patents shown. Soonest fee due date first, then patent number.

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