Term ends Mar 26, 2028 · Medium confidence
20-year base term ends Mar 26, 2028
Why Medium: A parent in the chain could not be resolved.
Held by Accurate Solar Power, LLC
Filed Sep 23, 2016 as application 15/275,251 · Granted Apr 2, 2019
Base term plus 4 days of patent term adjustment (USPTO delay) · capped by a resolved terminal disclaimer
Today
2008
2028
Clock starts
Mar 26, 2008
Mar 26, 2008
Term ends
Mar 26, 2028
Mar 26, 2028
Granted
Apr 2, 2019
Apr 2, 2019
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
4
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 10,116,257.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
19
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 4 days past its 20-year base term on prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. 1 of 2 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 Mar 26, 2008, when application 12/056,235, the earliest non-provisional in its chain, was filed (this one was filed Sep 23, 2016); a parent in its chain could not be resolved (the next row) | Mar 26, 2028 | 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 | +4 days, USPTO patent term adjustment record | Mar 30, 2028 | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 10,116,257) | capped to Mar 26, 2028 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Mar 26, 2028 | Medium confidence |
This family
| US 7,772,716 | In force Mar 2028 | Mar 2028 |
| US 8,035,249 | In force no later than Mar 2028 | no later than Mar 2028 |
| US 8,427,009 | In force Mar 2028 | Mar 2028 |
| US 9,200,818 | Lapsed on the fee record Dec 2023 | Dec 2023 |
| US 9,196,770 | Lapsed on the fee record Nov 2023 | Nov 2023 |
| US 9,812,859 | Lapsed on the fee record Nov 2025 | Nov 2025 |
| US 10,250,184 | this patent Mar 2028 | Mar 2028 |
| US 10,116,257 | Lapsed on the fee record Oct 2022 | Oct 2022 |
8 of 19 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 |
|---|---|---|---|
| Sep 26, 2017 Reel 43706, frame 373 | Newdoll, Ronald M.; Shaver, Argil E. | Accurate Solar Power LLC | Assignment of Assignor's Interest |
| Sep 26, 2017 Reel 43706, frame 459 | Newdoll, Ronald M.; Shaver, Argil E., II | Newdoll Enterprises LLC | Assignment of Assignor's Interest |
| Sep 26, 2017 Reel 44018, frame 296 | Newdoll Enterprises LLC | Accurate Solar Power, LLC | 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.
What's changing
Mar 2028
Term ends Mar 26, 2028.
Note
The 4 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 10,116,257.
Citations
12
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.