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US

Novel Hydrogen Sulfate Salt

US 9,156,795 In force, term unresolved
OverviewFamilyAssignmentsSources & methods

Term ends no later than Jun 23, 2028 · Medium confidence

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.

Filed May 3, 2012 as application 13/463,499 · Granted Oct 13, 2015
Base term plus 559 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2006 2028
Clock starts
Dec 12, 2006
Ends no later than
Jun 23, 2028
Granted
Oct 13, 2015
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
559
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
Unresolved
Terminal disclaimer
On file, reference document not resolved, so the date above is an upper bound. We do not guess the cap.
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.
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 559 days past its 20-year base term on prosecution delay. A terminal disclaimer is on file with no resolved reference, so no cap is applied and none is guessed. 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Dec 12, 2006, when application PCT/US2006/061895, the earliest non-provisional in its chain, was filed (this one was filed May 3, 2012)Dec 12, 2026High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+559 days, USPTO patent term adjustment recordJun 23, 2028High confidence
Terminal disclaimer capDisclaimer on file (approved), reference document not resolvedno cap applied, and none guessedMedium confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderno later than Jun 23, 2028Medium confidence

This family

Application PCT/US2006/061895PCT application
no patent term
no patent term
Application 12/097,942Abandoned
not computed
not computed
US 9,156,795this patent
no later than Jun 2028
no later than Jun 2028
Application 14/152,766Abandoned
not computed
not computed
US 9,562,017In force
Dec 2026
Dec 2026
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.
RecordedAssignorAssigneeConveyance
Jun 2, 2015
Reel 35764, frame 975
Demattei, John; Chuang, Tsung-hsunArray Biopharma, Inc.Assignment of Assignor's Interest
Jun 2, 2015
Reel 35765, frame 112
Squire, Christopher John; Roberts, Ronald John; Sharma-singh, Gorkhn; Pervez, Mohammed; Ford, James Gair; Storey, Richard Anthony; Dickinson, Paul AlfredAstraZeneca ABAssignment of Assignor's Interest
Nov 13, 2025
Reel 72888, frame 633
AstraZeneca ABAlexion Pharma International Operations LimitedAssignment of Assignor's Interest
May 27, 2026
Reel 75641, frame 571
Demattei, John; Chuang, Tsung-hsungArray Biopharma Inc.Confirmatory Assignment and Clarification of Corporate 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.

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