Term ends Aug 15, 2033 · Medium confidence

Computed 20-year base term

Why Medium: The disclaimer's references carry disclaimers of their own not yet read (US 8,980,270, US 8,980,271, US 9,051,367, US 9,447,180, US 9,567,395, US 9,777,058), so the cap could be lower.

Held by Ipierian, Inc.

Filed Jan 3, 2017 as application 15/397,569 · Granted Aug 7, 2018

Base term, 20 years from filing

Today

20 years from filing

Term ends Aug 15, 2033

2013 2033

Clock starts
Aug 15, 2013

Term ends
Aug 15, 2033

Granted
Aug 7, 2018

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.

No effect

Terminal disclaimer

Resolved from the filed document, referencing US 8,926,974, US 8,980,270, US 8,980,271, US 9,051,367, US 9,447,180, US 9,567,395, US 9,777,058, to Aug 15, 2033. The term already ends on or before that date, so the cap shortened nothing.

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.

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 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.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Aug 15, 2013, when application PCT/US2013/055203, the earliest non-provisional in its chain, was filed (this one was filed Jan 3, 2017)	Aug 15, 2033	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 resolved from the filed document (refs US 8,926,974, US 8,980,270, US 8,980,271, US 9,051,367, US 9,447,180, US 9,567,395, US 9,777,058)	resolves to Aug 15, 2033, no earlier than this term, so no change	Medium confidence
Patent term extension	None on file	no change	High confidence
Fee events	2 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Aug 15, 2033	Medium confidence

This family

Application PCT/US2013/055203	PCT application no patent term	no patent term
US 8,926,974	In force Aug 2033	Aug 2033
Application 14/104,717	Abandoned not computed	not computed
Application 14/104,706	Abandoned not computed	not computed
Application PCT/US2014/041553	PCT application no patent term	no patent term
US 9,567,395	In force no later than Aug 2033	no later than Aug 2033
Application 14/896,611	Abandoned not computed	not computed
US 10,040,847	this patent Aug 2033	Aug 2033

8 of 9 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
Feb 1, 2017 Reel 41142, frame 417	Griswold-prenner, Irene; Stagliano, Nancy E.; Dang, Vu Cao	Ipierian, Inc.	Assignment 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.

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

What's changing

Aug 2033

Term ends Aug 15, 2033. Maintenance fees still fall due before then

Terminal disclaimer

A terminal disclaimer resolved from the filed document, referencing US 8,926,974, US 8,980,270, US 8,980,271, US 9,051,367, US 9,447,180, US 9,567,395, US 9,777,058, ends no earlier than this term, so it caps nothing.

Citations

later US patents cite this one

That is below the median of utility patents granted in 2018 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.

Methods of Treating a Tauopathy