Maintenance fees coming due

Klein Tools, Inc.

9 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 19, 2026. Unpaid by May 19, 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 9,032,847	Multi-Bit Power Driver Klein Tools, Inc. In force Fee due Nov 19, 2026 Lapses if unpaid May 19, 2027 Term ends Feb 10, 2034 · High confidence	Klein Tools, Inc.	In force	Nov 19, 2026	May 19, 2027	Term ends Feb 10, 2034	High confidence
US 11,717,047	Safety Helmet Fan System Klein Tools, Inc. In force Fee due Feb 8, 2027 Lapses if unpaid Aug 9, 2027 Term ends Apr 16, 2039 · High confidence	Klein Tools, Inc.	In force	Feb 8, 2027	Aug 9, 2027	Term ends Apr 16, 2039	High confidence
US 11,745,923	Cable or Utility Tie Klein Tools, Inc. In force Fee due Mar 5, 2027 Lapses if unpaid Sep 7, 2027 Term ends Nov 5, 2041 · High confidence	Klein Tools, Inc.	In force	Mar 5, 2027	Sep 7, 2027	Term ends Nov 5, 2041	High confidence
US 11,746,994	Lighting Device for an Aerial Work Platform Klein Tools, Inc. In force Fee due Mar 5, 2027 Lapses if unpaid Sep 7, 2027 Term ends May 28, 2040 · High confidence	Klein Tools, Inc.	In force	Mar 5, 2027	Sep 7, 2027	Term ends May 28, 2040	High confidence
US 11,751,650	Wheeled Backpack with Extendable Handle Klein Tools, Inc. In force Fee due Mar 12, 2027 Lapses if unpaid Sep 13, 2027 Term ends Aug 19, 2041 · High confidence	Klein Tools, Inc.	In force	Mar 12, 2027	Sep 13, 2027	Term ends Aug 19, 2041	High confidence
US 11,787,016	Plier Wrench with Removable/Reversible Jaw Klein Tools, Inc. In force Fee due Apr 17, 2027 Lapses if unpaid Oct 18, 2027 Term ends May 6, 2039 · High confidence	Klein Tools, Inc.	In force	Apr 17, 2027	Oct 18, 2027	Term ends May 6, 2039	High confidence
US 10,473,529	Duct Thermometer Klein Tools, Inc. In force Fee due May 12, 2027 Lapses if unpaid Nov 12, 2027 Term ends Nov 22, 2037 · High confidence	Klein Tools, Inc.	In force	May 12, 2027	Nov 12, 2027	Term ends Nov 22, 2037	High confidence
US 11,891,234	Wire Reel Storage Box Klein Tools, Inc. In force Fee due Aug 6, 2027 Lapses if unpaid Feb 7, 2028 Term ends Oct 1, 2041 · High confidence	Klein Tools, Inc.	In force	Aug 6, 2027	Feb 7, 2028	Term ends Oct 1, 2041	High confidence
US 11,958,171	Insulated Reversible Screwdriver Klein Tools, Inc. In force Fee due Oct 16, 2027 Lapses if unpaid Apr 17, 2028 Ends no later than Jan 29, 2040 · Medium confidence	Klein Tools, Inc.	In force	Oct 16, 2027	Apr 17, 2028	Ends no later than Jan 29, 2040	Medium 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.