Fostech, Inc.

13 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Ending by 2030

May 2029

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

1 fee due Sep 10, 2027
The maintenance fee for Trigger-locking apparatus, system, and method for semiautomatic firearms (US 10,584,932) comes due Sep 10, 2027. Unpaid by Mar 10, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Patent	Title	Status	Expires	Confidence
US D729,893	Firearm In force Term ends May 19, 2029 · From the USPTO record	In force	Term ends May 19, 2029	From the USPTO record
US 7,942,091	Shotgun drum magazine In force (reinstated) Term ends May 31, 2029 · From the USPTO record	In force (reinstated)	Term ends May 31, 2029	From the USPTO record
US 8,245,625	Gas pressure mechanism in gas-operated firearm In force Term ends Jun 9, 2030 · From the USPTO record	In force	Term ends Jun 9, 2030	From the USPTO record
US 8,667,881	Selectable dual mode trigger for semiautomatic firearms In force Term ends Dec 14, 2032 · From the USPTO record	In force	Term ends Dec 14, 2032	From the USPTO record
US 8,820,211	Selectable dual mode trigger for semiautomatic firearms In force Term ends Dec 14, 2032 · From the USPTO record	In force	Term ends Dec 14, 2032	From the USPTO record
US 9,377,257	Systems for firearms In force Ends no later than Dec 17, 2034 · From the USPTO record	In force	Ends no later than Dec 17, 2034	From the USPTO record
US 9,404,695	Gas systems for firearms In force Term ends Dec 17, 2034 · From the USPTO record	In force	Term ends Dec 17, 2034	From the USPTO record
US 9,341,420	Systems for firearms In force Term ends Feb 9, 2035 · From the USPTO record	In force	Term ends Feb 9, 2035	From the USPTO record
US 9,372,042	Magazine carrier for firearms In force Term ends Jun 10, 2035 · From the USPTO record	In force	Term ends Jun 10, 2035	From the USPTO record
US 10,254,067	Trigger-locking apparatus, system, and method for semiautomatic firearms In force Term ends Jan 30, 2037 · From the USPTO record	In force	Term ends Jan 30, 2037	From the USPTO record

10 of 13 patents shown.

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Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built

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

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