Term ended Jun 4, 2026 · Medium confidence

Computed 20-year base term

Why Medium: A parent in the chain could not be resolved.

Held by Seegene, Inc.

Filed Nov 8, 2012 as application 13/671,621 · Granted Feb 6, 2018

Base term plus 93 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ended Jun 4, 2026

2006 2026

Clock starts
Mar 3, 2006

Term ended
Jun 4, 2026

Granted
Feb 6, 2018

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

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.

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 93 days past its 20-year base term on prosecution delay. 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 Mar 3, 2006, when application PCT/KR2006/000746, the earliest non-provisional in its chain, was filed (this one was filed Nov 8, 2012); a parent in its chain could not be resolved (the next row)	Mar 3, 2026	High confidence
Continuity chain	A parent in the chain could not be resolved	dated from this application's own claim	Medium confidence
Patent term adjustment	+93 days, USPTO patent term adjustment record	Jun 4, 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	Jun 4, 2026	Medium confidence

This family

US 8,092,997	In force Feb 2028	Feb 2028
US 9,884,890	this patent Jun 2026	Jun 2026
US 10,870,675	Term ended Jun 2026	Jun 2026

3 of 5 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
Dec 11, 2012 Reel 29445, frame 345	Chun, Jong-yoon	Seegene, 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

Note

The 93 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

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.

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