Lapsed Jul 5, 2026 on the fee record · High confidence
20-year base term ends May 17, 2030
First maintenance fee unpaid; grace period ended.
Held by Fiberlean Technologies Limited
Filed Aug 30, 2018 as application 16/117,685 · Granted Jul 5, 2022
Base term, 20 years from filing
Today
Lapsed Jul 5, 2026
2010
2030
Clock starts
May 17, 2010
May 17, 2010
No longer in force
Jul 5, 2026
Jul 5, 2026
Granted
Jul 5, 2022
Jul 5, 2022
Term would have run to
May 17, 2030
May 17, 2030
base term
after the term ends
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 11,162,219, to May 17, 2030. The term already ends on or before that date, so the cap shortened nothing.
0 of 1
Maintenance fees paid
One maintenance fee can end this term early, the one due 3.5 years from grant; the next one's grace period runs past the term end. This counts it if the record shows it paid.
9
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 May 17, 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 May 17, 2010, when application PCT/GB2010/000982, the earliest non-provisional in its chain, was filed (this one was filed Aug 30, 2018) | May 17, 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 11,162,219) | resolves to May 17, 2030, no earlier than this term, so no change | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 1 maintenance fees paid | lapsed Jul 5, 2026 | High confidence |
| Computed term end | The steps above, in order | Jul 5, 2026 | High confidence |
This family
| US 9,127,405 | In force Nov 2030 | Nov 2030 |
| US 8,231,764 | In force no later than May 2030 | no later than May 2030 |
| US 10,100,464 | Lapsed on the fee record Oct 2026 | Oct 2026 |
| US 11,377,791 | this patent Jul 2026 | Jul 2026 |
| US 11,162,219 | Lapsed on the fee record Nov 2025 | Nov 2025 |
| US 11,732,411 | In force May 2030 | May 2030 |
| US 11,970,817 | In force no later than May 2030 | no later than May 2030 |
| Application 18/619,339 | Abandoned not computed | not computed |
8 of 9 applications in this family shown, earliest filings first. 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 |
|---|---|---|---|
| Jun 14, 2019 Reel 49467, frame 355 | Husband, John Claude; Svending, Per; Skuse, David Robert; Motsi, Tafadzwa; Likitalo, Mikko; Coles, Alan | Imerys Minerals, Limited | Assignment of Assignor's Interest |
| Jun 14, 2019 Reel 49467, frame 378 | Imerys Minerals Limited | Fiberleantm Technologies Limited | Assignment of Assignor's Interest |
| Jun 14, 2019 Reel 49476, frame 182 | Fiberleantm Technologies Limited | Fiberlean Technologies Limited | Change of Name |
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 11,162,219, ends no earlier than this term, so it caps nothing.
Citations
4
later US patents cite this one
That is top 25% of utility patents granted in 2022 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.