Maintenance fees coming due

Orthosoft Inc.

22 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 11, 2026. Unpaid by Jun 11, 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 10,318,024	Mechanical Optical Pointer Orthosoft ULC In force Fee due Dec 11, 2026 Lapses if unpaid Jun 11, 2027 Term ends Sep 27, 2037 · High confidence	Orthosoft ULC	In force	Dec 11, 2026	Jun 11, 2027	Term ends Sep 27, 2037	High confidence
US 11,684,426	System and Method for Tracking Bones Orthosoft Inc. In force Fee due Dec 27, 2026 Lapses if unpaid Jun 28, 2027 Term ends Jun 12, 2040 · High confidence	Orthosoft Inc.	In force	Dec 27, 2026	Jun 28, 2027	Term ends Jun 12, 2040	High confidence
US 11,696,801	Method and System for Validating Bone Alterations in Computer-Assisted Surgery Orthosoft ULC In force Fee due Jan 11, 2027 Lapses if unpaid Jul 12, 2027 Term ends Dec 30, 2041 · High confidence	Orthosoft ULC	In force	Jan 11, 2027	Jul 12, 2027	Term ends Dec 30, 2041	High confidence
US 9,115,998	Tracking System and Method Orthosoft Inc. In force Fee due Feb 25, 2027 Lapses if unpaid Aug 25, 2027 Term ends Jan 19, 2030 · High confidence	Orthosoft Inc.	In force	Feb 25, 2027	Aug 25, 2027	Term ends Jan 19, 2030	High confidence
US 10,405,873	Computer-Assisted Surgery Tools and System Orthosoft Inc. In force Fee due Mar 10, 2027 Lapses if unpaid Sep 10, 2027 Term ends Nov 2, 2032 · High confidence	Orthosoft Inc.	In force	Mar 10, 2027	Sep 10, 2027	Term ends Nov 2, 2032	High confidence
US 10,405,928	Acetabulum Rim Digitizer Device and Method Orthosoft Inc. In force Fee due Mar 10, 2027 Lapses if unpaid Sep 10, 2027 Term ends Jun 4, 2037 · High confidence	Orthosoft Inc.	In force	Mar 10, 2027	Sep 10, 2027	Term ends Jun 4, 2037	High confidence
US 10,413,428	Leg Length Calculation in Computer-Assisted Surgery Orthosoft Inc. In force Fee due Mar 17, 2027 Lapses if unpaid Sep 17, 2027 Term ends Aug 1, 2037 · High confidence	Orthosoft Inc.	In force	Mar 17, 2027	Sep 17, 2027	Term ends Aug 1, 2037	High confidence
US 9,144,470	Tracking System and Method Orthosoft Inc. In force Fee due Mar 29, 2027 Lapses if unpaid Sep 29, 2027 Term ends Nov 4, 2031 · High confidence	Orthosoft Inc.	In force	Mar 29, 2027	Sep 29, 2027	Term ends Nov 4, 2031	High confidence
US 10,429,957	Mechanical Optical Pointer Orthosoft ULC In force Fee due Apr 1, 2027 Lapses if unpaid Oct 1, 2027 Term ends Sep 27, 2037 · High confidence	Orthosoft ULC	In force	Apr 1, 2027	Oct 1, 2027	Term ends Sep 27, 2037	High confidence
US 11,771,502	Computer-Assisted Surgery System and Method Orthosoft Inc. In force Fee due Apr 3, 2027 Lapses if unpaid Oct 4, 2027 Term ends Aug 17, 2028 · High confidence	Orthosoft Inc.	In force	Apr 3, 2027	Oct 4, 2027	Term ends Aug 17, 2028	High confidence
12 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 22 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.