Lapsed Aug 26, 2022 on the fee record · High confidence
20-year base term ends Mar 24, 2030
Second maintenance fee unpaid; grace period ended.
Held by Emseal Joint Systems Ltd.
Filed Dec 21, 2012 as application 13/723,605 · Granted Aug 26, 2014
Base term, 20 years from filing
Today
Lapsed Aug 26, 2022
2010
2030
Clock starts
Mar 24, 2010
Mar 24, 2010
No longer in force
Aug 26, 2022
Aug 26, 2022
Granted
Aug 26, 2014
Aug 26, 2014
Term would have run to
Mar 24, 2030
Mar 24, 2030
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.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,341,908, to Mar 24, 2030. The term already ends on or before that date, so the cap shortened nothing.
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.
7
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 24, 2030: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 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 Mar 24, 2010, when application 12/730,354, the earliest non-provisional in its chain, was filed (this one was filed Dec 21, 2012) | Mar 24, 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 8,341,908) | resolves to Mar 24, 2030, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | lapsed Aug 26, 2022 | High confidence |
| Computed term end | The steps above, in order | Aug 26, 2022 | High confidence |
This family
| US 8,341,908 | In force May 2030 | May 2030 |
| US 8,813,449 | this patent Aug 2022 | Aug 2022 |
| US 8,813,450 | Lapsed on the fee record Aug 2022 | Aug 2022 |
| US 9,689,157 | Lapsed on the fee record Jun 2025 | Jun 2025 |
| US 9,689,158 | Lapsed on the fee record Jun 2025 | Jun 2025 |
| US 10,787,806 | In force Mar 2030 | Mar 2030 |
| US 10,787,805 | In force Mar 2030 | Mar 2030 |
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 |
|---|---|---|---|
| May 21, 2014 Reel 32938, frame 414 | Hensley, Lester; Witherspoon, Bill | Emseal Joint Systems Ltd. | 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.
Terminal disclaimer
A terminal disclaimer resolved from the filed document, referencing US 8,341,908, ends no earlier than this term, so it caps nothing.
Citations
93
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.