Term ended Mar 5, 2025 · High confidence
20-year base term ends Apr 23, 2030
Held by Akonia Holographics, LLC
Filed Nov 2, 2012 as application 13/667,724 · Granted Feb 25, 2014
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
Term ended Mar 5, 2025
2010
2030
Clock starts
Apr 23, 2010
Apr 23, 2010
Term ended
Mar 5, 2025
Mar 5, 2025
Granted
Feb 25, 2014
Feb 25, 2014
base term
after the term ends
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 7,704,643, US 8,133,639, US 8,323,854.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
2
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. All three maintenance fees were paid, so no fee lapse ended it. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Apr 23, 2010, when application 12/765,987, the earliest non-provisional in its chain, was filed (this one was filed Nov 2, 2012) | Apr 23, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 7,704,643, US 8,133,639, US 8,323,854) | capped to Mar 5, 2025 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Mar 5, 2025 | High confidence |
This family
| US 8,323,854 | In force Nov 2030 | Nov 2030 |
| US 8,658,332 | this patent Mar 2025 | Mar 2025 |
The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Jan 2, 2014 Reel 31874, frame 517 | Askham, Fredric R | Akonia Holographics, LLC | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 7,704,643, US 8,133,639, US 8,323,854.
Citations
90
later US patents cite this one
That is top 5% of utility patents granted in 2014 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.