Maintenance fees coming due

Adtran, Inc.

52 maintenance fees come due in the 12 months from Nov 15, 2026, the next on Nov 21, 2026. Unpaid by May 21, 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 10,298,725	Synchronous Digital Signal Encapsulation Adtran Inc. In force Fee due Nov 21, 2026 Lapses if unpaid May 21, 2027 Term ends Mar 15, 2036 · High confidence	Adtran Inc.	In force	Nov 21, 2026	May 21, 2027	Term ends Mar 15, 2036	High confidence
US 10,298,778	Systems and Methods for Powering Network Access Devices from Customer Premises Equipment Adtran, Inc. In force Fee due Nov 21, 2026 Lapses if unpaid May 21, 2027 Term ends Apr 2, 2032 · High confidence	Adtran, Inc.	In force	Nov 21, 2026	May 21, 2027	Term ends Apr 2, 2032	High confidence
US 9,048,925	Method and Device for Processing Data and Communication System Comprising Such Device Adtran GmbH In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Apr 29, 2031 · High confidence	Adtran GmbH	In force	Dec 2, 2026	Jun 2, 2027	Term ends Apr 29, 2031	High confidence
US 9,054,511	Sheet Metal Structure Having Twist-Out Tabs for Removing a Knockout Adtran, Inc. In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Mar 6, 2034 · High confidence	Adtran, Inc.	In force	Dec 9, 2026	Jun 9, 2027	Term ends Mar 6, 2034	High confidence
US 10,326,683	Class of Service Probe Adtran, Inc. In force Fee due Dec 18, 2026 Lapses if unpaid Jun 21, 2027 Term ends May 2, 2037 · High confidence	Adtran, Inc.	In force	Dec 18, 2026	Jun 21, 2027	Term ends May 2, 2037	High confidence
US 9,065,588	Communications System Having Remotely Managed and Configured Optical Network Unit Adtran, Inc. In force Fee due Dec 23, 2026 Lapses if unpaid Jun 23, 2027 Term ends Feb 22, 2034 · High confidence	Adtran, Inc.	In force	Dec 23, 2026	Jun 23, 2027	Term ends Feb 22, 2034	High confidence
US 9,069,539	Method and System for Furnishing Power and Data from Power Sourcing Equipment to Powered Device Adtran, Inc. In force Fee due Dec 30, 2026 Lapses if unpaid Jun 30, 2027 Term ends Sep 1, 2032 · High confidence	Adtran, Inc.	In force	Dec 30, 2026	Jun 30, 2027	Term ends Sep 1, 2032	High confidence
US 9,083,785	Systems and Methods Selectively Excluding Tones from Vectoring Adtran, Inc. In force Fee due Jan 14, 2027 Lapses if unpaid Jul 14, 2027 Term ends Jun 29, 2032 · High confidence	Adtran, Inc.	In force	Jan 14, 2027	Jul 14, 2027	Term ends Jun 29, 2032	High confidence
US 9,088,642	Systems and Methods for Handling Crosstalk Vectoring Failures in Multi-Card Vectoring Groups Adtran, Inc. In force Fee due Jan 21, 2027 Lapses if unpaid Jul 21, 2027 Term ends Mar 2, 2032 · High confidence	Adtran, Inc.	In force	Jan 21, 2027	Jul 21, 2027	Term ends Mar 2, 2032	High confidence
US 9,092,208	Device and Method for Powering Ethernet Midspan Device and Endspan Device Adtran, Inc. In force Fee due Jan 28, 2027 Lapses if unpaid Jul 28, 2027 Term ends Oct 9, 2033 · High confidence	Adtran, Inc.	In force	Jan 28, 2027	Jul 28, 2027	Term ends Oct 9, 2033	High confidence
42 more maintenance fees coming due in the 12 months from Nov 15, 2026 · Pro

10 of 52 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.