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US

Compositions and Methods for Producing Isoprene

US 9,909,144 In force
OverviewFamilyAssignmentsSources & methods

Term ends Dec 15, 2028 · High confidence

Filed Jan 4, 2016 as application 14/987,681 · Granted Mar 6, 2018
Base term, 20 years from filing
Today
20 years from filing
2008 2028
Clock starts
Dec 15, 2008
Term ends
Dec 15, 2028
Granted
Mar 6, 2018
base term 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
None
Term adjustment
No prosecution delay on this record.
No effect
Terminal disclaimer
Resolved from the filed document, referencing US 8,288,148, to Dec 15, 2028. The term already ends on or before that date, so the cap shortened nothing.
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 is its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer is resolved from the filed document, and it ends no earlier than this term, so it shortens nothing. 2 of 2 maintenance fees are paid so far. 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Dec 15, 2008, when application 12/335,071, the earliest non-provisional in its chain, was filed (this one was filed Jan 4, 2016)Dec 15, 2028High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capDisclaimer resolved from the filed document (refs US 8,288,148)resolves to Dec 15, 2028, no earlier than this term, so no changeHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events2 of 2 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderDec 15, 2028High confidence

This family

US 8,288,148In force
Jun 2029
Jun 2029
US 9,260,727In force
Sep 2030
Sep 2030
US 8,709,785In force
Dec 2028
Dec 2028
US 9,909,144this patent
Dec 2028
Dec 2028
US 10,626,420In force
Dec 2028
Dec 2028
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
Oct 2, 2017
Reel 43758, frame 175
Cervin, Marguerite; Whited, Gregory M.; Chotani, Gopal; Sanford, Karl J.; Valle, Fernando; McAuliffe, Joseph C.; Miasnikov, Andrei; La Duca, Richard; Peres, CarolineDanisco US Inc.Assignment of Assignor's Interest
Oct 2, 2017
Reel 43758, frame 296
Feher, Frank James; Puhala, Auron ScouThe Goodyear Tire & Rubber CompanyAssignment of Assignor's Interest

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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