Maintenance fees coming due

API Corporation

12 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Feb 13, 2027. Unpaid by Aug 13, 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 10,380,621	Title-Acceptance and Processing Architecture API Market, Inc. In force Fee due Feb 13, 2027 Lapses if unpaid Aug 13, 2027 Term ends Aug 11, 2031 · High confidence	API Market, Inc.	In force	Feb 13, 2027	Aug 13, 2027	Term ends Aug 11, 2031	High confidence
US 11,771,065	Formulations and Methods for Promoting Honeybee Health API Holdings, LLC In force Fee due Apr 3, 2027 Lapses if unpaid Oct 4, 2027 Term ends Aug 18, 2036 · High confidence	API Holdings, LLC	In force	Apr 3, 2027	Oct 4, 2027	Term ends Aug 18, 2036	High confidence
US 9,177,338	Software, systems, and methods for processing digital bearer instruments API Market, Inc. In force Fee due May 3, 2027 Lapses if unpaid Nov 3, 2027 Term ends Mar 14, 2032 · High confidence	API Market, Inc.	In force	May 3, 2027	Nov 3, 2027	Term ends Mar 14, 2032	High confidence
US 10,467,606	Enhanced Title Processing Arrangement API Market, Inc. In force Fee due May 5, 2027 Lapses if unpaid Nov 5, 2027 Term ends Oct 31, 2031 · High confidence	API Market, Inc.	In force	May 5, 2027	Nov 5, 2027	Term ends Oct 31, 2031	High confidence
US 9,181,459	Component Carrier Reel Splicing Tape API Fabcuts, LLC In force Fee due May 10, 2027 Lapses if unpaid Nov 10, 2027 Term ends Mar 25, 2031 · High confidence	API Fabcuts, LLC	In force	May 10, 2027	Nov 10, 2027	Term ends Mar 25, 2031	High confidence
US 11,819,463	Base Floor Part, Replacement Floor, Modular System and Method for Enlarging a Rear Cargo Space of a Motor Vehicle API CZ S.R.O. In force Fee due May 21, 2027 Lapses if unpaid Nov 22, 2027 Term ends Dec 28, 2041 · High confidence	API CZ S.R.O.	In force	May 21, 2027	Nov 22, 2027	Term ends Dec 28, 2041	High confidence
US 9,263,877	Temperature-Compensated Current Monitoring API Technologies Corp. In force Fee due Aug 16, 2027 Lapses if unpaid Feb 16, 2028 Term ends Dec 30, 2034 · High confidence	API Technologies Corp.	In force	Aug 16, 2027	Feb 16, 2028	Term ends Dec 30, 2034	High confidence
US 10,611,342	Windshield Wiper Assembly Alberee Products, Inc. and API Korea Co., Ltd. In force Fee due Oct 7, 2027 Lapses if unpaid Apr 7, 2028 Term ends Oct 24, 2036 · High confidence	Alberee Products, Inc. and API Korea Co., Ltd.	In force	Oct 7, 2027	Apr 7, 2028	Term ends Oct 24, 2036	High confidence
US 10,611,343	Windshield Wiper Assembly Alberee Products, Inc. and API Korea Co., Ltd. In force Fee due Oct 7, 2027 Lapses if unpaid Apr 7, 2028 Term ends Jul 10, 2036 · High confidence	Alberee Products, Inc. and API Korea Co., Ltd.	In force	Oct 7, 2027	Apr 7, 2028	Term ends Jul 10, 2036	High confidence
US 11,951,050	Lifting Mechanism for a Foldable Ramp for Wheelchair Access to a Passenger Car Rear Door and Foldable Ramp API CZ S.R.O. In force Fee due Oct 9, 2027 Lapses if unpaid Apr 10, 2028 Term ends Feb 6, 2042 · High confidence	API CZ S.R.O.	In force	Oct 9, 2027	Apr 10, 2028	Term ends Feb 6, 2042	High confidence
2 more maintenance fees coming due in the 12 months from Nov 15, 2026 · Pro

10 of 12 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.