Maintenance fees coming due

Wi-Lan Inc.

14 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 2, 2026. Unpaid by Jun 2, 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 9,048,891	Multi-Tiered Quantization of Channel State Information in Multiple Antenna Systems Wi-Lan Inc. In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Jan 11, 2029 · High confidence	Wi-Lan Inc.	In force	Dec 2, 2026	Jun 2, 2027	Term ends Jan 11, 2029	High confidence
US 10,320,453	Quantization of Channel State Information in Multiple Antenna Systems Wi-Lan Inc. In force Fee due Dec 11, 2026 Lapses if unpaid Jun 11, 2027 Term ends Nov 22, 2027 · High confidence	Wi-Lan Inc.	In force	Dec 11, 2026	Jun 11, 2027	Term ends Nov 22, 2027	High confidence
US 11,689,477	Method and Device for Synchronization in Wireless Networks Wi-Lan Inc. In force Fee due Dec 27, 2026 Lapses if unpaid Jun 28, 2027 Term ends Aug 2, 2027 · High confidence	Wi-Lan Inc.	In force	Dec 27, 2026	Jun 28, 2027	Term ends Aug 2, 2027	High confidence
US 9,078,206	Method and Device for Synchronization in Wireless Networks Wi-Lan Inc. In force Fee due Jan 7, 2027 Lapses if unpaid Jul 7, 2027 Term ends Jun 1, 2028 · High confidence	Wi-Lan Inc.	In force	Jan 7, 2027	Jul 7, 2027	Term ends Jun 1, 2028	High confidence
US 10,348,463	Intercell Interference Mitigation Wi-Lan Inc. In force Fee due Jan 9, 2027 Lapses if unpaid Jul 9, 2027 Term ends Dec 3, 2028 · High confidence	Wi-Lan Inc.	In force	Jan 9, 2027	Jul 9, 2027	Term ends Dec 3, 2028	High confidence
US 9,088,958	Methods and Apparatus for Identifying Subscriber Station Mobility Wi-Lan Inc. In force Fee due Jan 21, 2027 Lapses if unpaid Jul 21, 2027 Term ends May 18, 2029 · High confidence	Wi-Lan Inc.	In force	Jan 21, 2027	Jul 21, 2027	Term ends May 18, 2029	High confidence
US 10,382,103	Mitigation of Transmission Errors of Quantized Channel State Information Feedback in Multi Antenna Systems Wi-Lan Inc. In force Fee due Feb 13, 2027 Lapses if unpaid Aug 13, 2027 Term ends Apr 21, 2028 · High confidence	Wi-Lan Inc.	In force	Feb 13, 2027	Aug 13, 2027	Term ends Apr 21, 2028	High confidence
US 9,119,145	Method and Device for Synchronization in Wireless Networks Wi-Lan Inc. In force Fee due Feb 25, 2027 Lapses if unpaid Aug 25, 2027 Term ends Jan 29, 2028 · High confidence	Wi-Lan Inc.	In force	Feb 25, 2027	Aug 25, 2027	Term ends Jan 29, 2028	High confidence
US 9,161,341	Error Correction for a Persistent Resource Allocation Wi-Lan Inc. In force Fee due Apr 13, 2027 Lapses if unpaid Oct 13, 2027 Term ends Sep 4, 2028 · High confidence	Wi-Lan Inc.	In force	Apr 13, 2027	Oct 13, 2027	Term ends Sep 4, 2028	High confidence
US 11,800,536	Efficient and Consistent Wireless Downlink Channel Configuration Wi-Lan Inc. In force Fee due Apr 24, 2027 Lapses if unpaid Oct 25, 2027 Term ends Mar 9, 2029 · High confidence	Wi-Lan Inc.	In force	Apr 24, 2027	Oct 25, 2027	Term ends Mar 9, 2029	High confidence
4 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 14 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.