Term ends Apr 22, 2029 · Medium confidence
20-year base term ends Apr 22, 2029
Why Medium: A parent in the chain could not be resolved.
Held by Techtronic Cordless GP
Filed Jan 26, 2018 as application 15/881,252 · Granted May 24, 2022
Base term, 20 years from filing
Today
2009
2029
Clock starts
Apr 22, 2009
Apr 22, 2009
Term ends
Apr 22, 2029
Apr 22, 2029
Granted
May 24, 2022
May 24, 2022
base term
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.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
This patent's term is its 20-year base term, with no adjustment for prosecution delay. 1 of 1 maintenance fees is paid so far. Confidence: Medium. 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 22, 2009, when application 12/428,453, the earliest non-provisional in its chain, was filed (this one was filed Jan 26, 2018); a parent in its chain could not be resolved (the next row) | Apr 22, 2029 | High confidence |
| Continuity chain | A parent in the chain could not be resolved | dated from this application's own claim | Medium confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 1 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 22, 2029 | Medium confidence |
This family
| US 9,516,807 | In force (reinstated) Apr 2029 | Apr 2029 |
| US 9,924,631 | In force Apr 2029 | Apr 2029 |
| Application 15/705,441 | Abandoned not computed | not computed |
| Application 15/705,496 | Abandoned not computed | not computed |
| US 11,337,368 | this patent Apr 2029 | Apr 2029 |
| US D970,321 | In force Nov 2037 | Nov 2037 |
| Application 18/111,812 | Abandoned not computed | not computed |
7 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 |
|---|---|---|---|
| Oct 14, 2018 Reel 47155, frame 971 | Alliss, George E., MR | First-to-Invent, LLC | Assignment of Assignor's Interest |
| Nov 8, 2019 Reel 50955, frame 127 | First-to-Invent, LLC; Torvian Inc.; Specialty Coated Products, Inc. | Torvent, LLC | Assignment of Assignor's Interest |
| Feb 7, 2025 Reel 70140, frame 570 | Torvent LLC | Techtronic Cordless GP | 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
Apr 2029
Term ends Apr 22, 2029. No further fees fall due before then
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.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.