Also listed on Pfizer Products Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Feb 22, 2028 · Medium confidence
20-year base term ended Jan 31, 2023
Why Medium: A parent in the chain could not be resolved.
Held by Lonza Bend Inc.
Filed Oct 30, 2007 as application 11/928,426 · Granted Dec 15, 2015
Base term plus 1848 days of patent term adjustment (USPTO delay)
Today
2003
2028
Clock starts
Jan 31, 2003
Jan 31, 2003
Term ends
Feb 22, 2028
Feb 22, 2028
Granted
Dec 15, 2015
Dec 15, 2015
base term
patent term adjustment
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
1,848
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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 1848 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are 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 Jan 31, 2003, when application 10/355,706, the earliest non-provisional in its chain, was filed (this one was filed Oct 30, 2007); a parent in its chain could not be resolved (the next row) | Jan 31, 2023 | 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 | +1848 days, USPTO patent term adjustment record | Feb 22, 2028 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Feb 22, 2028 | Medium confidence |
This family
| US 9,211,261 | this patent Feb 2028 | Feb 2028 |
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 |
|---|---|---|---|
| Dec 19, 2008 Reel 21998, frame 880 | Pfizer Inc.; Pfizer Products Inc. | Bend Research, Inc. | Assignment of Assignor's Interest |
| Sep 12, 2013 Reel 31197, frame 613 | Bend Research, Inc. | Pfizer Inc. | Assignment of Assignor's Interest |
| Sep 12, 2013 Reel 31197, frame 619 | Hancock, Bruno C. | Pfizer Inc.; Pfizer Products Inc. | Assignment of Assignor's Interest |
| Sep 12, 2013 Reel 31197, frame 626 | Appel, Leah E.; Byers, John E.; Crew, Marshall D.; Friesen, Dwayne T. | Bend Research, Inc. | Assignment of Assignor's Interest |
| Sep 12, 2013 Reel 31197, frame 636 | Pfizer Inc. | Pfizer Products Inc. | Assignment of Assignor's Interest |
| Sep 12, 2013 reel/frame not recorded | Hancock, Bruno C. | Pfizer Inc. | Assignment of Assignor's Interest |
| Sep 12, 2013 reel/frame not recorded | Hancock, Bruno C. | Pfizer Products Inc. | Assignment of Assignor's Interest |
| Sep 17, 2013 Reel 31222, frame 326 | Pfizer Inc. | Pfizer Products Inc. | Assignment of Assignor's Interest |
| Sep 17, 2013 Reel 31222, frame 328 | Schadtle, Stephen J. | Pfizer Inc.; Pfizer Products Inc. | Assignment of Assignor's Interest |
| Sep 17, 2013 reel/frame not recorded | Schadtle, Stephen J. | Pfizer Inc. | Assignment of Assignor's Interest |
| Sep 17, 2013 reel/frame not recorded | Schadtle, Stephen J. | Pfizer Products Inc. | Assignment of Assignor's Interest |
| Feb 2, 2023 Reel 62971, frame 292 | Bend Research, Inc. | Lonza Bend Inc. | 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.
What's changing
Feb 2028
Term ends Feb 22, 2028. Maintenance fees still fall due before then
Note
The 1848 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
16
later US patents cite this one
That is above the median of utility patents granted in 2015 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.