Term ends Apr 14, 2027 · Medium confidence
20-year base term ends Nov 29, 2026
Why Medium: A parent in the chain could not be resolved.
Filed Jul 6, 2009 as application 12/497,846 · Granted Sep 20, 2011
Base term plus 136 days of patent term adjustment (USPTO delay)
Today
2006
2027
Clock starts
Nov 29, 2006
Nov 29, 2006
Term ends
Apr 14, 2027
Apr 14, 2027
Granted
Sep 20, 2011
Sep 20, 2011
base term
patent term adjustment
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
136
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 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.
3
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 136 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Nov 29, 2006, when application 11/564,494, the earliest non-provisional in its chain, was filed (this one was filed Jul 6, 2009); a parent in its chain could not be resolved (the next row) | Nov 29, 2026 | 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 | +136 days, USPTO patent term adjustment record | Apr 14, 2027 | 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 14, 2027 | Medium confidence |
This family
| US 8,022,010 | this patent Apr 2027 | Apr 2027 |
| US 8,592,337 | In force Nov 2026 | Nov 2026 |
2 of 3 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 |
|---|---|---|---|
| Jul 21, 2011 Reel 26631, frame 57 | Hilgendorff, Marcus | BASF Catalysts | Assignment of Assignor's Interest |
| Aug 15, 2011 Reel 26753, frame 369 | BASF Catalysts | BASF Corporation | Basf Catalysts LLC Contributed Substantially All of Its Assets to Entity 1 and Then Distributed Its Interest in Entity 1 to Entity 2. Entity 2 Distributed the Entity 1 Interest to Basf Corp. Entity 1 Then Merged with and into Basf Corp. |
| Jan 27, 2025 Reel 70009, frame 146 | BASF Corporation | BASF Mobile Emissions Catalysts LLC | Nunc Pro Tunc Assignment |
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
Apr 2027
Term ends Apr 14, 2027. No further fees fall due before then
Note
The 136 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
7
later US patents cite this one
That is below the median of utility patents granted in 2011 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.