Maintenance fees coming due

SDG LLC

8 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 6, 2026. Unpaid by Jun 7, 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 11,666,654	Drug Delivery System for Treating Disease SDG LLC In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Feb 8, 2039 · High confidence	SDG LLC	In force	Dec 6, 2026	Jun 7, 2027	Term ends Feb 8, 2039	High confidence
US 11,695,648	Method for Supporting Service Level Agreement Monitoring in a Software Defined Network and Corresponding Software Defined Network SDG Assessment Ltd. In force Fee due Jan 4, 2027 Lapses if unpaid Jul 6, 2027 Term ends Apr 22, 2039 · High confidence	SDG Assessment Ltd.	In force	Jan 4, 2027	Jul 6, 2027	Term ends Apr 22, 2039	High confidence
US 11,746,599	High-Power Capacitor for Downhole Electrocrushing Drilling Halliburton Energy Services, Inc., Chevron U.S.A. Inc. and SDG LLC In force Fee due Mar 5, 2027 Lapses if unpaid Sep 7, 2027 Term ends May 5, 2036 · High confidence	Halliburton Energy Services, Inc., Chevron U.S.A. Inc. and SDG LLC	In force	Mar 5, 2027	Sep 7, 2027	Term ends May 5, 2036	High confidence
US 10,407,995	Repetitive Pulsed Electric Discharge Drills Including Downhole Formation Evaluation SDG LLC In force Fee due Mar 10, 2027 Lapses if unpaid Sep 10, 2027 Term ends Jul 5, 2033 · High confidence	SDG LLC	In force	Mar 10, 2027	Sep 10, 2027	Term ends Jul 5, 2033	High confidence
US 11,803,644	Security Hardened Processing Device SDG Logic Inc. In force Fee due Apr 30, 2027 Lapses if unpaid Nov 1, 2027 Term ends Dec 12, 2040 · High confidence	SDG Logic Inc.	In force	Apr 30, 2027	Nov 1, 2027	Term ends Dec 12, 2040	High confidence
US 10,472,894	Resonant Transformer for Downhole Electrocrushing Drilling Halliburton Energy Services, Inc., Chevron U.S.A. Inc. and SDG, LLC. In force Fee due May 12, 2027 Lapses if unpaid Nov 12, 2027 Term ends Apr 15, 2037 · High confidence	Halliburton Energy Services, Inc., Chevron U.S.A. Inc. and SDG, LLC.	In force	May 12, 2027	Nov 12, 2027	Term ends Apr 15, 2037	High confidence
US 11,873,697	Casing Equipment for Pulsed Power Drilling Halliburton Energy Services, Inc., SDG LLC and Chevron U.S.A. Inc. In force Fee due Jul 16, 2027 Lapses if unpaid Jan 18, 2028 Term ends Oct 19, 2041 · High confidence	Halliburton Energy Services, Inc., SDG LLC and Chevron U.S.A. Inc.	In force	Jul 16, 2027	Jan 18, 2028	Term ends Oct 19, 2041	High confidence
US 11,873,715	Pulse Power Drilling Assembly Transformer with a Core Having a Non-Conductive Material Halliburton Energy Services, Inc. and SDG LLC In force Fee due Jul 16, 2027 Lapses if unpaid Jan 18, 2028 Term ends Nov 4, 2041 · High confidence	Halliburton Energy Services, Inc. and SDG LLC	In force	Jul 16, 2027	Jan 18, 2028	Term ends Nov 4, 2041	High confidence

8 of 8 patents shown. Soonest fee due date first, then patent number.

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