Lapsed May 29, 2026 on the fee record · High confidence
20-year base term ends Aug 6, 2033
Second maintenance fee unpaid; grace period ended.
Held by Clarcor Inc.
Filed Aug 6, 2013 as application 13/960,375 · Granted May 29, 2018
Base term, 20 years from filing, plus 1154 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
Lapsed May 29, 2026
2013
2035
Clock starts
Aug 6, 2013
Aug 6, 2013
No longer in force
May 29, 2026
May 29, 2026
Granted
May 29, 2018
May 29, 2018
Term would have run to
Mar 27, 2035
Mar 27, 2035
base term
patent term adjustment
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1,154
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 9,731,466, US 9,827,728.
1 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.
5
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Mar 27, 2035: its 20-year base term plus 1154 days of term adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 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 Aug 6, 2013, when this application, 13/960,375, was filed | Aug 6, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1154 days, USPTO patent term adjustment record | Oct 3, 2036 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,731,466, US 9,827,728) | capped to Mar 27, 2035 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed May 29, 2026 | High confidence |
| Computed term end | The steps above, in order | May 29, 2026 | High confidence |
This family
| US 9,981,439 | this patent May 2026 | May 2026 |
| US 9,827,728 | Lapsed on the fee record Nov 2025 | Nov 2025 |
| US 9,731,466 | In force Mar 2035 | Mar 2035 |
| US 9,527,257 | In force Aug 2034 | Aug 2034 |
| US 9,889,620 | In force Apr 2036 | Apr 2036 |
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 |
|---|---|---|---|
| Oct 29, 2013 Reel 31502, frame 611 | Kay, Stephen; Carr, Thomas D.; Jimenez, Carlos Alberto Gomez; Moore, Joe | Fiberio Technology Corporation | Assignment of Assignor's Interest |
| Mar 31, 2015 Reel 35302, frame 27 | Fiberio Technology Corporation | Comerica Bank | Security Interest |
| Apr 1, 2016 Reel 38328, frame 720 | Comerica Bank | Fiberio Technology Corporation | Release of Security Interest Recorded at Reel 035302, Frame 0027 |
| May 4, 2016 Reel 38458, frame 869 | Fiberio Technology Corporation | Clarcor Inc. | 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.
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Alerts on its grants, lapses and transfers.
What's changing
Note
The 1154 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 9,731,466, US 9,827,728.
Citations
5
later US patents cite this one
That is above the median of utility patents granted in 2018 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.