Maintenance fees coming due

Synopsys, Inc.

345 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 9,047,257	Concurrent Host Operation And Device Debug Operation WIth Single Port Extensible Host Interface (XHCI) Host Controller Synopsys, Inc. In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Dec 12, 2032 · High confidence	Synopsys, Inc.	In force	Dec 2, 2026	Jun 2, 2027	Term ends Dec 12, 2032	High confidence
US 9,047,426	Performing Scenario Reduction in a Circuit Design Flow Synopsys, Inc. In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Oct 20, 2031 · High confidence	Synopsys, Inc.	In force	Dec 2, 2026	Jun 2, 2027	Term ends Oct 20, 2031	High confidence
US 9,048,121	FinFET Cell Architecture with Insulator Structure Synopsys, Inc. In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Jul 29, 2031 · High confidence	Synopsys, Inc.	In force	Dec 2, 2026	Jun 2, 2027	Term ends Jul 29, 2031	High confidence
US 9,049,020	Circuitry to Facilitate Testing of Serial Interfaces Synopsys, Inc. In force Fee due Dec 2, 2026 Lapses if unpaid Jun 2, 2027 Term ends Feb 3, 2033 · High confidence	Synopsys, Inc.	In force	Dec 2, 2026	Jun 2, 2027	Term ends Feb 3, 2033	High confidence
US 10,311,184	Circuit Verification on a Distributed Database Processing System Synopsys, Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends May 26, 2037 · High confidence	Synopsys, Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends May 26, 2037	High confidence
US 10,311,190	Virtual Hierarchical Layer Patterning Synopsys, Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Mar 30, 2035 · High confidence	Synopsys, Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Mar 30, 2035	High confidence
US 10,311,192	System and Method for Power Verification Using Efficient Merging of Power State Tables Synopsys, Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Jul 31, 2035 · High confidence	Synopsys, Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Jul 31, 2035	High confidence
US 10,311,195	Incremental Multi-Patterning Validation Synopsys, Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Jan 15, 2036 · High confidence	Synopsys, Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Jan 15, 2036	High confidence
US 10,311,200	Pre-Silicon Design Rule Evaluation Synopsys, Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Oct 3, 2036 · High confidence	Synopsys, Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Oct 3, 2036	High confidence
US 10,312,229	Memory Cells Including Vertical Nanowire Transistors Synopsys, Inc. In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Oct 20, 2037 · High confidence	Synopsys, Inc.	In force	Dec 4, 2026	Jun 4, 2027	Term ends Oct 20, 2037	High confidence
335 more maintenance fees coming due in the 12 months from Nov 14, 2026 · Pro

10 of 345 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.