Also listed on Phoenix AG, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 2, 2027 · High confidence
20-year base term ended Apr 21, 2025
Held by Contitech Deutschland GmbH
Filed May 12, 2006 as application 10/579,276 · Granted Apr 3, 2012
Base term plus 711 days of patent term adjustment (USPTO delay)
Today
2005
2027
Clock starts
Apr 21, 2005
Apr 21, 2005
Term ends
Apr 2, 2027
Apr 2, 2027
Granted
Apr 3, 2012
Apr 3, 2012
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
711
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.
2
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 711 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Apr 21, 2005, when application PCT/DE2005/000731, the earliest non-provisional in its chain, was filed (this one was filed May 12, 2006) | Apr 21, 2025 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +711 days, USPTO patent term adjustment record | Apr 2, 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 2, 2027 | High confidence |
This family
| US 8,149,989 | this patent Apr 2027 | Apr 2027 |
1 of 2 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 |
|---|---|---|---|
| May 12, 2006 Reel 17916, frame 50 | Schnell, Wolfgang | Phoenix AG | Assignment of Assignor's Interest |
| Dec 7, 2006 Reel 18635, frame 374 | Phoenix AG | Phoenix Conveyor Belt Systems GmbH | Assignment of Assignor's Interest |
| Dec 12, 2024 Reel 69567, frame 21 | Phoenix Conveyor Belt Systems GmbH | Contitech Deutschland GmbH | 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Apr 2027
Term ends Apr 2, 2027. No further fees fall due before then
Note
The 711 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
10
later US patents cite this one
That is above the median of utility patents granted in 2012 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.