Maintenance fees coming due

Pindrop Security, Inc.

25 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 11,657,823	Channel-Compensated Low-Level Features for Speaker Recognition Pindrop Security, Inc. In force Fee due Nov 23, 2026 Lapses if unpaid May 24, 2027 Term ends Sep 19, 2037 · High confidence	Pindrop Security, Inc.	In force	Nov 23, 2026	May 24, 2027	Term ends Sep 19, 2037	High confidence
US 11,659,082	Authentication Using DTMF Tones Pindrop Security, Inc. In force Fee due Nov 23, 2026 Lapses if unpaid May 24, 2027 Term ends Jan 16, 2038 · High confidence	Pindrop Security, Inc.	In force	Nov 23, 2026	May 24, 2027	Term ends Jan 16, 2038	High confidence
US 11,670,304	Speaker Recognition in the Call Center Pindrop Security, Inc. In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Sep 19, 2037 · High confidence	Pindrop Security, Inc.	In force	Dec 6, 2026	Jun 7, 2027	Term ends Sep 19, 2037	High confidence
US 10,325,601	Speaker Recognition in the Call Center Pindrop Security, Inc. In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 Term ends Sep 19, 2037 · High confidence	Pindrop Security, Inc.	In force	Dec 18, 2026	Jun 21, 2027	Term ends Sep 19, 2037	High confidence
US 10,347,256	Channel-Compensated Low-Level Features For Speaker Recognition Pindrop Security, Inc. In force Fee due Jan 9, 2027 Lapses if unpaid Jul 9, 2027 Term ends Jan 16, 2038 · High confidence	Pindrop Security, Inc.	In force	Jan 9, 2027	Jul 9, 2027	Term ends Jan 16, 2038	High confidence
US 10,362,172	Fraud Detection in Interactive Voice Response Systems Pindrop Security, Inc. In force Fee due Jan 23, 2027 Lapses if unpaid Jul 23, 2027 Term ends Oct 14, 2036 · High confidence	Pindrop Security, Inc.	In force	Jan 23, 2027	Jul 23, 2027	Term ends Oct 14, 2036	High confidence
US 11,715,460	Z-Vectors: Speaker Embeddings from Raw Audio Using Sincnet, Extended CNN Architecture and In-Network Augmentation Techniques Pindrop Security, Inc. In force Fee due Feb 1, 2027 Lapses if unpaid Aug 2, 2027 Term ends Oct 8, 2040 · High confidence	Pindrop Security, Inc.	In force	Feb 1, 2027	Aug 2, 2027	Term ends Oct 8, 2040	High confidence
US 10,375,248	Call Authentication Using Call Forwarding Pindrop Security, Inc. In force Fee due Feb 6, 2027 Lapses if unpaid Aug 6, 2027 Term ends Feb 28, 2037 · High confidence	Pindrop Security, Inc.	In force	Feb 6, 2027	Aug 6, 2027	Term ends Feb 28, 2037	High confidence
US 10,381,009	End-To-End Speaker Recognition Using Deep Neural Network Pindrop Security, Inc. In force Fee due Feb 13, 2027 Lapses if unpaid Aug 13, 2027 Term ends Sep 12, 2036 · High confidence	Pindrop Security, Inc.	In force	Feb 13, 2027	Aug 13, 2027	Term ends Sep 12, 2036	High confidence
US 11,727,942	Age Compensation in Biometric Systems Using Time-Interval, Gender and Age Pindrop Security, Inc. In force Fee due Feb 15, 2027 Lapses if unpaid Aug 16, 2027 Term ends Feb 7, 2038 · High confidence	Pindrop Security, Inc.	In force	Feb 15, 2027	Aug 16, 2027	Term ends Feb 7, 2038	High confidence
15 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 25 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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