Term ended Nov 7, 2026 · High confidence
20-year base term ended Mar 10, 2026
Held by Arrowhead Pharmaceuticals, Inc.
Filed Mar 26, 2012 as application 13/429,913 · Granted May 26, 2015
Base term plus 242 days of patent term adjustment (USPTO delay)
Today
Term ended Nov 7, 2026
2006
2026
Clock starts
Mar 10, 2006
Mar 10, 2006
Term ended
Nov 7, 2026
Nov 7, 2026
Granted
May 26, 2015
May 26, 2015
base term
patent term adjustment
after the term ends
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
242
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 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
5
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 242 days past its 20-year base term on prosecution delay. 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 Mar 10, 2006, when application 11/373,376, the earliest non-provisional in its chain, was filed (this one was filed Mar 26, 2012) | Mar 10, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +242 days, USPTO patent term adjustment record | Nov 7, 2026 | 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 2 maintenance fees paid | term ended | High confidence |
| Computed term end | The steps above, in order | Nov 7, 2026 | High confidence |
This family
| US 7,947,660 | In force Mar 2027 | Mar 2027 |
| US 8,173,617 | Term ended Mar 2026 | Mar 2026 |
| US 9,040,494 | this patent Nov 2026 | Nov 2026 |
| US 9,550,994 | Term ended Mar 2026 | Mar 2026 |
| Application 15/364,992 | Abandoned not computed | not computed |
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 11, 2015 Reel 35604, frame 484 | Novartis AG | Arrowhead Research Corporation | Assignment of Assignor's Interest |
| Aug 7, 2024 Reel 68510, frame 363 | Arrowhead Pharmaceuticals, Inc. | Sixth Streetlending Partners, as the Administrative Agent | Security Interest |
| Aug 12, 2024 Reel 68551, frame 204 | Arrowhead Research Corporation | Arrowhead Pharmaceuticals, 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
Note
The 242 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
0
later US patents cite this one
That is below 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.