Maintenance fees coming due

Appleton GRP LLC

19 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 6, 2026. Unpaid by Jun 7, 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 11,672,070	Providing Industrial Network Reliability Using Luminaires Appleton GRP LLC In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends May 28, 2041 · High confidence	Appleton GRP LLC	In force	Dec 6, 2026	Jun 7, 2027	Term ends May 28, 2041	High confidence
US 11,676,776	Finger Safe Cover for a Terminal of an Electrical Switching Device Appleton GRP LLC In force Fee due Dec 13, 2026 Lapses if unpaid Jun 14, 2027 Term ends Aug 6, 2041 · High confidence	Appleton GRP LLC	In force	Dec 13, 2026	Jun 14, 2027	Term ends Aug 6, 2041	High confidence
US 10,340,628	Cap for Covering a Plug Opening Appleton GRP LLC In force Fee due Jan 2, 2027 Lapses if unpaid Jul 2, 2027 Term ends Jan 6, 2038 · High confidence	Appleton GRP LLC	In force	Jan 2, 2027	Jul 2, 2027	Term ends Jan 6, 2038	High confidence
US 10,361,546	Electrical Enclosure Appleton GRP LLC In force Fee due Jan 23, 2027 Lapses if unpaid Jul 23, 2027 Term ends Jan 5, 2038 · High confidence	Appleton GRP LLC	In force	Jan 23, 2027	Jul 23, 2027	Term ends Jan 5, 2038	High confidence
US 11,736,103	Voltage Source Kickstart Circuit for Powering Integrated Circuits Appleton GRP LLC In force Fee due Feb 22, 2027 Lapses if unpaid Aug 23, 2027 Term ends Jun 16, 2041 · High confidence	Appleton GRP LLC	In force	Feb 22, 2027	Aug 23, 2027	Term ends Jun 16, 2041	High confidence
US 11,744,026	Chassis Housing and Support Structures to Secure a Circuit Board Within the Chassis Housing Appleton GRP LLC In force Fee due Feb 28, 2027 Lapses if unpaid Aug 30, 2027 Term ends Aug 3, 2042 · High confidence	Appleton GRP LLC	In force	Feb 28, 2027	Aug 30, 2027	Term ends Aug 3, 2042	High confidence
US 11,746,993	IEC ZONE 1 Rated LED Light Engine using Pre-Molded Encapsulation Layer and Metal Sheet Appleton GRP LLC In force Fee due Mar 5, 2027 Lapses if unpaid Sep 7, 2027 Term ends Jun 21, 2042 · High confidence	Appleton GRP LLC	In force	Mar 5, 2027	Sep 7, 2027	Term ends Jun 21, 2042	High confidence
US 10,422,172	Tool-Less Hinge Mechanism Appleton GRP LLC In force Fee due Mar 24, 2027 Lapses if unpaid Sep 24, 2027 Term ends Aug 31, 2037 · High confidence	Appleton GRP LLC	In force	Mar 24, 2027	Sep 24, 2027	Term ends Aug 31, 2037	High confidence
US 11,767,111	Slotted Receptacle for Payload Handle to Secure Payload within a UAV Wing Aviation LLC In force Fee due Mar 26, 2027 Lapses if unpaid Sep 27, 2027 Term ends Jul 14, 2042 · High confidence	Wing Aviation LLC	In force	Mar 26, 2027	Sep 27, 2027	Term ends Jul 14, 2042	High confidence
US 11,769,380	Event Indications of Hazardous Environment Luminaires Using Visual Sequences Appleton GRP LLC In force Fee due Mar 26, 2027 Lapses if unpaid Sep 27, 2027 Term ends Jan 9, 2040 · High confidence	Appleton GRP LLC	In force	Mar 26, 2027	Sep 27, 2027	Term ends Jan 9, 2040	High confidence
9 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 19 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.