Term ends Feb 7, 2029 · Medium confidence
20-year base term ends Dec 10, 2028
Why Medium: A parent in the chain could not be resolved.
Held by Reg Synthetic Fuels, LLC
Filed Jun 18, 2024 as application 18/747,297 · Granted Jan 6, 2026
Base term plus 59 days of patent term adjustment (USPTO delay)
Today
2008
2029
Clock starts
Dec 10, 2008
Dec 10, 2008
Term ends
Feb 7, 2029
Feb 7, 2029
Granted
Jan 6, 2026
Jan 6, 2026
base term
patent term adjustment
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
59
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
None due
Maintenance fees
This term ends before the first maintenance fee's grace period does, 4 years from grant, so no fee can end it early.
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 runs 59 days past its 20-year base term on prosecution delay. No maintenance fee can end this term early. 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 Dec 10, 2008, when application 12/331,906, the earliest non-provisional in its chain, was filed (this one was filed Jun 18, 2024); a parent in its chain could not be resolved (the next row) | Dec 10, 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 | +59 days, USPTO patent term adjustment record | Feb 7, 2029 | 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 | No maintenance fee can end the term early | In force | High confidence |
| Computed term end | The steps above, in order | Feb 7, 2029 | Medium confidence |
This family
| US 8,231,804 | In force Apr 2029 | Apr 2029 |
| US 9,963,401 | In force Jun 2029 | Jun 2029 |
| US 10,717,687 | In force Apr 2029 | Apr 2029 |
| US 11,097,994 | In force Dec 2028 | Dec 2028 |
| US 11,623,899 | In force Dec 2028 | Dec 2028 |
| US 12,516,002 | this patent Feb 2029 | Feb 2029 |
| Application 19/412,727 | Pending 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.
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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Feb 2029
Term ends Feb 7, 2029. No further fees fall due before then
Note
The 59 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
We have no citation count for this patent yet. That is not the same as never having been cited.
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.