Maintenance fees coming due

United Microelectronics Corp.

499 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 28, 2026. Unpaid by May 28, 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 10,304,679	Method of Fabricating a Mask United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Nov 28, 2026 Lapses if unpaid May 28, 2027 Term ends Jan 22, 2038 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Nov 28, 2026	May 28, 2027	Term ends Jan 22, 2038	High confidence
US 11,665,888	Semiconductor Device and Method for Fabricating the Same Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 Term ends Apr 3, 2038 · High confidence	Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Nov 30, 2026	Jun 1, 2027	Term ends Apr 3, 2038	High confidence
US 10,312,080	Method for Forming Amorphous Silicon Multuple Layer Structure United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Jan 2, 2038 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Jan 2, 2038	High confidence
US 10,312,088	Self-Aligned Double Patterning Method United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Feb 20, 2038 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Feb 20, 2038	High confidence
US 10,312,090	Patterning Method United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Jun 7, 2038 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Jun 7, 2038	High confidence
US 10,312,242	Semiconductor Memory Device United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends May 22, 2038 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 4, 2026	Jun 4, 2027	Term ends May 22, 2038	High confidence
US 11,676,815	Patterned Structure Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 13, 2026 Lapses if unpaid Jun 14, 2027 Term ends May 11, 2038 · High confidence	Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 13, 2026	Jun 14, 2027	Term ends May 11, 2038	High confidence
US 10,332,887	Buried Word Line of a Dynamic Random Access Memory and Method for Fabricating the Same United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 25, 2026 Lapses if unpaid Jun 25, 2027 Term ends Dec 13, 2037 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 25, 2026	Jun 25, 2027	Term ends Dec 13, 2037	High confidence
US 10,332,888	Memory Devices and Method of Manufacturing the Same United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 25, 2026 Lapses if unpaid Jun 25, 2027 Term ends Dec 26, 2037 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 25, 2026	Jun 25, 2027	Term ends Dec 26, 2037	High confidence
US 10,332,889	Method of Manufacturing a Semiconductor Device United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd. In force Fee due Dec 25, 2026 Lapses if unpaid Jun 25, 2027 Term ends Apr 12, 2038 · High confidence	United Microelectronics Corp. and Fujian Jinhua Integrated Circuit Co., Ltd.	In force	Dec 25, 2026	Jun 25, 2027	Term ends Apr 12, 2038	High confidence
489 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 499 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.