Also listed on Forest Laboratories Holdings Unlimited Company, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Sep 19, 2029 · High confidence
20-year base term ended Sep 26, 2026
Filed Sep 26, 2006 as application 11/535,237 · Granted Aug 9, 2011
Base term plus 1089 days of patent term adjustment (USPTO delay)
Today
2006
2029
Clock starts
Sep 26, 2006
Sep 26, 2006
Term ends
Sep 19, 2029
Sep 19, 2029
Granted
Aug 9, 2011
Aug 9, 2011
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
1,089
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.
This patent's term runs 1089 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 Sep 26, 2006, when this application, 11/535,237, was filed | Sep 26, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1089 days, USPTO patent term adjustment record | Sep 19, 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 | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 19, 2029 | High confidence |
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 |
|---|---|---|---|
| Nov 20, 2006 Reel 18556, frame 127 | Rao, Srinivas G.; Gendreau, R. Michael; Kranzler, Jay D. | Cypress Bioscience Inc. | Assignment of Assignor's Interest |
| Jul 29, 2013 Reel 30892, frame 890 | Cypress Bioscience, Inc. | Savella Aiv LLC | Assignment of Assignor's Interest |
| Jul 29, 2013 Reel 30892, frame 966 | Savella Aiv LLC | Royalty Pharma Collection Trust | Assignment of Assignor's Interest |
| Mar 21, 2017 Reel 41668, frame 583 | Royalty Pharma Collection Trust | Forest Laboratories Holdings Limited | Assignment of Assignor's Interest |
| Jul 8, 2024 Reel 68218, frame 582 | Forest Laboratories Holdings Limited | Forest Laboratories Holdings Unlimited Company | Change of Name |
| Jul 8, 2024 Reel 68218, frame 611 | Forest Laboratories Holdings Unlimited | Allergan Pharmaceuticals International Limited | Merger |
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
Sep 2029
Term ends Sep 19, 2029. No further fees fall due before then
Note
The 1089 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
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.