Term ends no later than Dec 28, 2026 · Medium confidence
20-year base term ends Dec 28, 2026
In force on USPTO's status record and by its fee record. A terminal disclaimer on file may shorten this term, possibly to a date already past; its reference document is unresolved, so the date above is an upper bound and no earlier date is guessed.
Held by Pharmacyclics LLC
Filed Dec 28, 2006 as application 11/617,645 · Granted Apr 7, 2009
Base term, 20 years from filing
Today
2006
2026
Clock starts
Dec 28, 2006
Dec 28, 2006
Ends no later than
Dec 28, 2026
Dec 28, 2026
Granted
Apr 7, 2009
Apr 7, 2009
base term
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
None
Term adjustment
No prosecution delay on this record.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
76
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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 Dec 28, 2006, when this application, 11/617,645, was filed | Dec 28, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer on file (approved), reference document not resolved | no cap applied, and none guessed | Medium 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 | no later than Dec 28, 2026 | Medium confidence |
This family
| US 7,514,444 | this patent no later than Dec 2026 | no later than Dec 2026 |
| US 7,732,454 | In force Apr 2027 | Apr 2027 |
| US 7,825,118 | In force Jan 2028 | Jan 2028 |
| Application PCT/US2008/058528 | PCT application no patent term | no patent term |
| US 8,088,781 | In force no later than Dec 2027 | no later than Dec 2027 |
| Application 12/499,008 | Abandoned not computed | not computed |
| US 8,008,309 | In force Nov 2027 | Nov 2027 |
| US 8,501,751 | In force Dec 2026 | Dec 2026 |
8 of 76 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 24, 2007 Reel 19602, frame 702 | Honigberg, Lee; Verner, Erik; Zhengying, Pan | Pharmacyclics, Inc. | Assignment of Assignor's Interest |
| Jul 16, 2015 Reel 36126, frame 377 | Oxford Amherst Corporation | Pharmacyclics, Inc. | Merger |
| Jul 16, 2015 Reel 36126, frame 398 | Pharmacyclics, Inc.; Oxford Amherst LLC | Pharmacyclics LLC | Merger and Change of Name |
| May 17, 2016 Reel 38722, frame 776 | Oxford Amherst Corporation; Pharmacyclics, Inc. | Pharmacyclics, Inc. | Corrective Assignment to Correct the Conveying Party Data Previously Recorded on Reel 036126 Frame 0377. Assignor(S) Hereby Confirms the Merger. |
| May 17, 2016 Reel 38722, frame 849 | Pharmacyclics, Inc.; Oxford Amherst LLC | Pharmacyclics LLC | Corrective Assignment to Correct the Conveying Party Data Previously Recorded on Reel 036126 Frame 0398. Assignor(S) Hereby Confirms the Merger and 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.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Dec 2026
Term ends no later than Dec 28, 2026. No further fees fall due before then
Note
A terminal disclaimer is on file and its reference is not resolved. No cap is applied and none is guessed
Open question
A terminal disclaimer is on file (approved) and its reference document is not resolved. A disclaimer would cap the term earlier than Dec 28, 2026. We will not guess the cap.
Citations
389
later US patents cite this one
That is top 1% of utility patents granted in 2009 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
This computed term ends no later than the date shown; an unresolved terminal disclaimer may end it earlier. 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.