Maintenance fees coming due

AGC Inc.

308 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Nov 19, 2026. Unpaid by May 19, 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 9,034,906	Novel EP4 Agonist AGC Inc. In force Fee due Nov 19, 2026 Lapses if unpaid May 19, 2027 Term ends Sep 8, 2029 · Medium confidence	AGC Inc.	In force	Nov 19, 2026	May 19, 2027	Term ends Sep 8, 2029	Medium confidence
US 10,301,214	Liquid Composition, Glass Article and Method of Forming Coating Film AGC Inc. In force Fee due Nov 28, 2026 Lapses if unpaid May 28, 2027 Ends no later than Aug 25, 2035 · Medium confidence	AGC Inc.	In force	Nov 28, 2026	May 28, 2027	Ends no later than Aug 25, 2035	Medium confidence
US 11,661,374	Chemically-Strengthened Glass AGC Inc. In force Fee due Nov 30, 2026 Lapses if unpaid Jun 1, 2027 Ends no later than Oct 18, 2038 · Low confidence	AGC Inc.	In force	Nov 30, 2026	Jun 1, 2027	Ends no later than Oct 18, 2038	Low confidence
US 10,308,549	Chemically Strengthened Glass and Method for Producing Same AGC Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Aug 27, 2034 · High confidence	AGC Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Aug 27, 2034	High confidence
US 10,310,142	Optical Device AGC Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends May 22, 2036 · High confidence	AGC Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends May 22, 2036	High confidence
US 10,310,150	Near-Infrared Cut Filter and Solid-State Imaging Device AGC Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Nov 16, 2036 · High confidence	AGC Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Nov 16, 2036	High confidence
US 10,312,589	Antenna Directivity Control System and Radio Device AGC Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Jan 16, 2035 · High confidence	AGC Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Jan 16, 2035	High confidence
US 9,052,512	Diffractive Optical Element and Measuring Apparatus AGC Inc. In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Oct 30, 2033 · High confidence	AGC Inc.	In force	Dec 9, 2026	Jun 9, 2027	Term ends Oct 30, 2033	High confidence
US 9,052,601	Reflective Mask Blank for Euv Lithography and Process for Its Production, as Well as Substrate with Reflective Layer for Such Mask Blank and Process for Its Production AGC Inc. In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Jan 1, 2034 · High confidence	AGC Inc.	In force	Dec 9, 2026	Jun 9, 2027	Term ends Jan 1, 2034	High confidence
US 9,054,287	Substrate for Mounting Light-Emitting Element, Production Process Thereof and Light-Emitting Device AGC Inc. In force Fee due Dec 9, 2026 Lapses if unpaid Jun 9, 2027 Term ends Jan 15, 2034 · High confidence	AGC Inc.	In force	Dec 9, 2026	Jun 9, 2027	Term ends Jan 15, 2034	High confidence
298 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 308 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.

Upgrade to Pro

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.