Maintenance fees coming due

TC1 LLC

84 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 14, 2026. Unpaid by May 14, 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 10,291,067	Computer Modeling for Resonant Power Transfer Systems TC1 LLC In force Fee due Nov 14, 2026 Lapses if unpaid May 14, 2027 Term ends Apr 18, 2035 · High confidence	TC1 LLC	In force	Nov 14, 2026	May 14, 2027	Term ends Apr 18, 2035	High confidence
US 9,044,592	Sutureless Lead Retention Features TC1 LLC In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Jan 29, 2028 · High confidence	TC1 LLC	In force	Dec 2, 2026	Jun 2, 2027	Term ends Jan 29, 2028	High confidence
US 9,056,197	Selective Stimulation Systems and Signal Parameters for Medical Conditions TC1 LLC In force Fee due Dec 16, 2026 Lapses if unpaid Jun 16, 2027 Term ends Aug 11, 2031 · High confidence	TC1 LLC	In force	Dec 16, 2026	Jun 16, 2027	Term ends Aug 11, 2031	High confidence
US 11,679,234	Percutaneous Heart Pump Transitionable Between Separated and Operational Configurations TC1 LLC In force Fee due Dec 20, 2026 Lapses if unpaid Jun 21, 2027 Term ends Jun 30, 2039 · High confidence	TC1 LLC	In force	Dec 20, 2026	Jun 21, 2027	Term ends Jun 30, 2039	High confidence
US 11,682,924	Systems and Methods for Wireless Power Resonators with Core Cavity TC1 LLC In force Fee due Dec 20, 2026 Lapses if unpaid Jun 21, 2027 Term ends Jun 8, 2041 · High confidence	TC1 LLC	In force	Dec 20, 2026	Jun 21, 2027	Term ends Jun 8, 2041	High confidence
US 11,684,769	Implantable Blood Pump Assembly Including Pressure Sensor and Methods of Assembling Same TC1 LLC In force Fee due Dec 27, 2026 Lapses if unpaid Jun 28, 2027 Term ends Apr 12, 2041 · High confidence	TC1 LLC	In force	Dec 27, 2026	Jun 28, 2027	Term ends Apr 12, 2041	High confidence
US 11,689,057	Mechanical Gauge for Estimating Inductance Changes in Resonant Power Transfer Systems With Flexible Coils for Use With Implanted Medical Devices TC1 LLC In force Fee due Dec 27, 2026 Lapses if unpaid Jun 28, 2027 Term ends Oct 9, 2039 · High confidence	TC1 LLC	In force	Dec 27, 2026	Jun 28, 2027	Term ends Oct 9, 2039	High confidence
US 11,690,606	Introducer Sheath Assembly for Catheter Systems and Methods of Using Same TC1 LLC In force Fee due Jan 4, 2027 Lapses if unpaid Jul 6, 2027 Term ends Oct 9, 2041 · High confidence	TC1 LLC	In force	Jan 4, 2027	Jul 6, 2027	Term ends Oct 9, 2041	High confidence
US 9,079,043	Transcutaneous Power Transmission Utilizing Non-Planar Resonators TC1 LLC In force Fee due Jan 14, 2027 Lapses if unpaid Jul 14, 2027 Term ends Sep 17, 2032 · High confidence	TC1 LLC	In force	Jan 14, 2027	Jul 14, 2027	Term ends Sep 17, 2032	High confidence
US 10,350,342	Monitoring of Redundant Conductors TC1 LLC In force Fee due Jan 16, 2027 Lapses if unpaid Jul 16, 2027 Term ends May 27, 2029 · High confidence	TC1 LLC	In force	Jan 16, 2027	Jul 16, 2027	Term ends May 27, 2029	High confidence
74 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 84 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.