Maintenance fees coming due

Psemi Corporation

157 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 11,658,654	Dc-Coupled High-Voltage Level Shifter Psemi Corporation In force Fee due Nov 23, 2026 Lapses if unpaid May 24, 2027 Term ends Sep 26, 2037 · Medium confidence	Psemi Corporation	In force	Nov 23, 2026	May 24, 2027	Term ends Sep 26, 2037	Medium confidence
US 9,041,459	Partial Adiabatic Conversion Psemi Corporation In force Fee due Nov 26, 2026 Lapses if unpaid May 26, 2027 Term ends Sep 16, 2033 · High confidence	Psemi Corporation	In force	Nov 26, 2026	May 26, 2027	Term ends Sep 16, 2033	High confidence
US 9,041,484	Method, System, and Apparatus for Resonator Circuits and Modulating Resonators Psemi Corporation In force Fee due Nov 26, 2026 Lapses if unpaid May 26, 2027 Term ends Jan 21, 2033 · High confidence	Psemi Corporation	In force	Nov 26, 2026	May 26, 2027	Term ends Jan 21, 2033	High confidence
US 9,042,135	Methods and Apparatuses for a Soft-Start Function with Auto-Disable Psemi Corporation In force Fee due Nov 26, 2026 Lapses if unpaid May 26, 2027 Term ends Apr 7, 2032 · High confidence	Psemi Corporation	In force	Nov 26, 2026	May 26, 2027	Term ends Apr 7, 2032	High confidence
US 10,312,885	Self-Matching Phase Shifter/Attenuator Psemi Corporation In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Mar 10, 2037 · High confidence	Psemi Corporation	In force	Dec 4, 2026	Jun 4, 2027	Term ends Mar 10, 2037	High confidence
US 11,670,555	PCM Metal Shielding for Wafer Testing Psemi Corporation In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Aug 26, 2041 · High confidence	Psemi Corporation	In force	Dec 6, 2026	Jun 7, 2027	Term ends Aug 26, 2041	High confidence
US 11,671,058	Standby Voltage Condition for Fast RF Amplifier Bias Recovery Psemi Corporation In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Sep 16, 2036 · Medium confidence	Psemi Corporation	In force	Dec 6, 2026	Jun 7, 2027	Term ends Sep 16, 2036	Medium confidence
US 11,671,090	Switch Fet Body Current Management Devices and Methods Psemi Corporation In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Jul 31, 2040 · High confidence	Psemi Corporation	In force	Dec 6, 2026	Jun 7, 2027	Term ends Jul 31, 2040	High confidence
US 11,671,091	Devices and Methods for Improving Voltage Handling and/or Bi-Directionality of Stacks of Elements When Connected Between Terminals Psemi Corporation In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Mar 2, 2029 · Medium confidence	Psemi Corporation	In force	Dec 6, 2026	Jun 7, 2027	Term ends Mar 2, 2029	Medium confidence
US 11,671,135	Methods and Apparatus for Reducing Switching Time of RF Fet Switching Devices Psemi Corporation In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Dec 3, 2041 · High confidence	Psemi Corporation	In force	Dec 6, 2026	Jun 7, 2027	Term ends Dec 3, 2041	High confidence
147 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 157 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.