Term ends Mar 15, 2033 · High confidence
20-year base term ends Mar 15, 2033
Held by Briggs & Stratton, LLC
Filed Mar 21, 2017 as application 15/465,213 · Granted Sep 24, 2019
Base term plus 175 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2013
2033
Clock starts
Mar 15, 2013
Mar 15, 2013
Term ends
Mar 15, 2033
Mar 15, 2033
Granted
Sep 24, 2019
Sep 24, 2019
base term
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
175
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 9,161,490, US 9,481,242.
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.
13
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 runs 175 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 3 maintenance fees is paid so far. 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 15, 2013, when application 13/840,070, the earliest non-provisional in its chain, was filed (this one was filed Mar 21, 2017) | Mar 15, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +175 days, USPTO patent term adjustment record | Sep 6, 2033 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 9,161,490, US 9,481,242) | capped to Mar 15, 2033 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 15, 2033 | High confidence |
This family
| US 9,161,490 | In force Mar 2033 | Mar 2033 |
| US 9,597,957 | In force Mar 2033 | Mar 2033 |
| US 9,481,242 | In force May 2033 | May 2033 |
| US 9,849,776 | In force Mar 2033 | Mar 2033 |
| US 9,707,842 | In force no later than Mar 2033 | no later than Mar 2033 |
| US 10,421,356 | this patent Mar 2033 | Mar 2033 |
| US 10,093,178 | In force Mar 2033 | Mar 2033 |
| US 10,093,179 | In force no later than Mar 2033 | no later than Mar 2033 |
8 of 13 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 |
|---|---|---|---|
| Aug 1, 2017 Reel 43156, frame 286 | Melone, Mark J.; Marshall, James F.; Smith, Richard; Lynch, Mark; Rasch, Travis; Slegelis, Erik; Weber, Steven J.; Oswald, Denis | Briggs & Stratton Corporation | Assignment of Assignor's Interest |
| Sep 27, 2019 Reel 50564, frame 916 | Briggs & Stratton Corporation | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest |
| Jul 22, 2020 Reel 53287, frame 487 | Briggs & Stratton Corporation | JPMorgan Chase Bank, N.A., as Collateral Agent | Security Interest |
| Aug 21, 2020 Reel 54617, frame 331 | JPMorgan Chase Bank, N.A., as Collateral Agent | Briggs & Stratton Corporation | Release of Security Interest |
| Sep 21, 2020 Reel 53838, frame 46 | Briggs & Stratton, LLC | Wells Fargo Bank, National Association, as Collateral Agent | Security Interest |
| Sep 22, 2020 Reel 53850, frame 192 | Briggs & Stratton, LLC | KPS Capital Finance Management, LLC | Security Interest |
| Sep 22, 2020 Reel 53885, frame 211 | JPMorgan Chase Bank, N.A., as Collateral Agent | Briggs & Stratton Corporation | Release of Security Interest |
| Jul 14, 2021 Reel 56879, frame 594 | Briggs & Stratton Corporation | Briggs & Stratton, 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.
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Alerts on its grants, lapses and transfers.
What's changing
Mar 2033
Term ends Mar 15, 2033. Maintenance fees still fall due before then
Note
The 175 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 9,161,490, US 9,481,242.
Citations
17
later US patents cite this one
That is top 25% of utility patents granted in 2019 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.