Maintenance fees coming due

Alector LLC

9 maintenance fees come due in the 12 months from Nov 14, 2026, the next on Dec 4, 2026. Unpaid by Jun 4, 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 10,308,718	Anti-Sortilin Antibodies and Methods of Use Thereof Alector LLC In force Fee due Dec 4, 2026 Lapses if unpaid Jun 4, 2027 Term ends Apr 7, 2036 · High confidence	Alector LLC	In force	Dec 4, 2026	Jun 4, 2027	Term ends Apr 7, 2036	High confidence
US 11,667,699	ANTI-MS4A4A Antibodies and Methods of Use Thereof Alector LLC In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Jul 30, 2040 · High confidence	Alector LLC	In force	Dec 6, 2026	Jun 7, 2027	Term ends Jul 30, 2040	High confidence
US 11,667,710	ANTI-SIGLEC-9 Antibodies and Methods of Use Thereof Alector LLC In force Fee due Dec 6, 2026 Lapses if unpaid Jun 7, 2027 Term ends Dec 2, 2036 · High confidence	Alector LLC	In force	Dec 6, 2026	Jun 7, 2027	Term ends Dec 2, 2036	High confidence
US 10,428,150	Anti-Sortilin Antibodies and Methods of Use Thereof Alector LLC In force Fee due Apr 1, 2027 Lapses if unpaid Oct 1, 2027 Term ends Apr 7, 2036 · High confidence	Alector LLC	In force	Apr 1, 2027	Oct 1, 2027	Term ends Apr 7, 2036	High confidence
US 11,779,642	Anti-SIRP-Alpha Antibodies and Methods of Use Thereof Alector LLC In force Fee due Apr 10, 2027 Lapses if unpaid Oct 12, 2027 Term ends Dec 11, 2039 · High confidence	Alector LLC	In force	Apr 10, 2027	Oct 12, 2027	Term ends Dec 11, 2039	High confidence
US 11,897,968	Anti-Mertk Antibodies and Methods of Use Thereof Alector LLC In force Fee due Aug 13, 2027 Lapses if unpaid Feb 14, 2028 Term ends Jul 3, 2041 · High confidence	Alector LLC	In force	Aug 13, 2027	Feb 14, 2028	Term ends Jul 3, 2041	High confidence
US 10,590,198	ANTI-SIGLEC-7 Antibodies and Methods of Use Thereof Alector LLC In force Fee due Sep 17, 2027 Lapses if unpaid Mar 17, 2028 Term ends Aug 26, 2036 · High confidence	Alector LLC	In force	Sep 17, 2027	Mar 17, 2028	Term ends Aug 26, 2036	High confidence
US 11,965,023	ANTI-SIGLEC-5 Antibodies and Methods of Use Thereof Alector LLC In force Fee due Oct 23, 2027 Lapses if unpaid Apr 24, 2028 Term ends May 15, 2038 · High confidence	Alector LLC	In force	Oct 23, 2027	Apr 24, 2028	Term ends May 15, 2038	High confidence
US 11,976,119	Anti-SIRPa Antibodies and Methods of Use Thereof Alector LLC In force Fee due Nov 7, 2027 Lapses if unpaid May 8, 2028 Term ends May 24, 2039 · High confidence	Alector LLC	In force	Nov 7, 2027	May 8, 2028	Term ends May 24, 2039	High confidence

9 of 9 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.