22 Evolution LLC
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
0
Ending by 2030
Jun 2031
Next term end
When these terms end
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 Dec 6, 2026The maintenance fee for Compact action with forward charging handle incorporated into an upper receiver handguard (US 11,668,538) comes due Dec 6, 2026. Unpaid by Jun 7, 2027, it lapses early.
- 1 fee due Jan 28, 2027The maintenance fee for Bolt hold open actuator for use with AR-15/M16 type firearms (US 9,091,499) comes due Jan 28, 2027. Unpaid by Jul 28, 2027, it lapses early.
- 2 fees due Apr 8, 2027
- 2 fees due Aug 4 to 11, 2027 · next Aug 4
Recent changes
- 1 term has ended since Aug 16, 2026
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 8,316,755 | Cotter pin anti rotation mechanism for accommodating sub caliber ammunition utilized in an AR-15 type firearm In force · From the USPTO record | In force | From the USPTO record | |
| US 9,091,499 | Bolt hold open actuator for use with AR-15/M16 type firearms In force · From the USPTO record | In force | From the USPTO record | |
| US 8,387,296 | Drop bolt hold open actuator for use with AR-15/M16 type firearms and incorporating a modified and displaceable follower for engaging a bolt catch mechanism such as in conjunction with rimfire ammunition In force · From the USPTO record | In force | From the USPTO record | |
| US 8,453,367 | Maintenance kit incorporated into sub caliber action device In force · From the USPTO record | In force | From the USPTO record | |
| US 8,479,635 | Drop bolt hold open actuator for use with AR-15/M16 type firearms in conjunction with rimfire ammunition In force · From the USPTO record | In force | From the USPTO record | |
| US 8,590,199 | Modified bolt assembly with forward assist adaptor for accomodating sub caliber ammunition utilized in an AR-15 type firearm In force · From the USPTO record | In force | From the USPTO record | |
| US D872,215 | Combination extensible firearm shoulder stock and receiver tube In force · From the USPTO record | In force | From the USPTO record | |
| US 9,952,011 | Rotationally actuated and dual pin supported linkage incorporated into a lower receiver of a firearm for establishing a last shot hold open condition with an upwardly displaceable magazine follower In force · From the USPTO record | In force | From the USPTO record | |
| US 10,436,530 | Radial delayed blowback operating system, such as for AR 15 platform In force · From the USPTO record | In force | From the USPTO record | |
| US 10,557,673 | Radial delayed blowback operating system, such as for AR 15 platform In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 42: 4 lapsed for an unpaid fee. List them
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.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
1 no status recorded