Also listed on ST Casestech, LLC, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends May 22, 2031 · High confidence

Computed 20-year base term

Held by ST Portfolio Holdings, LLC

Filed Sep 15, 2009 as application 12/560,097 · Granted Sep 8, 2015

Base term plus 614 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends May 22, 2031

2009 2031

Clock starts
Sep 15, 2009

Term ends
May 22, 2031

Granted
Sep 8, 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

614

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 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 runs 614 days past its 20-year base term on prosecution delay. 2 of 3 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.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Sep 15, 2009, when this application, 12/560,097, was filed	Sep 15, 2029	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+614 days, USPTO patent term adjustment record	May 22, 2031	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 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	May 22, 2031	High confidence

This family

US 9,129,291	this patent May 2031	May 2031
US 10,529,325	In force May 2031	May 2031
US 10,997,978	In force Sep 2029	Sep 2029
US 11,443,746	In force Sep 2029	Sep 2029
US 11,610,587	In force Sep 2029	Sep 2029
US 12,183,341	In force Sep 2029	Sep 2029
US 12,374,332	In force Sep 2029	Sep 2029
Application 19/238,687	Pending not computed	not computed

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
Jan 28, 2011 Reel 25716, frame 920	Goldstein, Steven Wayne; Keady, John; Hoshizaki, Gary	Personics Holdings Inc.	Assignment of Assignor's Interest
Apr 19, 2013 Reel 30249, frame 78	Personics Holdings, Inc.	Staton Family Investments, Ltd.	Security Agreement
Feb 8, 2014 Reel 32189, frame 304	Personics Holdings, Inc.	Personics Holdings, LLC	Assignment of Assignor's Interest
Nov 5, 2014 Reel 34170, frame 933	Personics Holdings, LLC	DM Staton Family Limited Partnership (as Assignee of Maria B. Staton)	Security Interest
Jun 26, 2017 Reel 42992, frame 493	Personics Holdings, Inc.; Personics Holdings, LLC	DM Station Family Limited Partnership, Assignee of Staton Family Investments, Ltd.	Assignment of Assignor's Interest
Jun 26, 2017 Reel 42992, frame 524	DM Station Family Limited Partnership, Assignee of Staton Family Investments, Ltd.	Staton Techiya, LLC	Assignment of Assignor's Interest
Aug 1, 2017 Reel 43392, frame 961	Personics Holdings, Inc.; Personics Holdings, LLC	DM Staton Family Limited Partnership, Assignee of Staton Family Investments, Ltd.	Corrective Assignment to Correct the Assignee's Name Previously Recorded at Reel: 042992 Frame: 0493. Assignor(S) Hereby Confirms the Assignment.
Aug 1, 2017 Reel 43393, frame 1	DM Staton Family Limited Partnership, Assignee of Staton Family Investments, Ltd.	Staton Techiya, LLC	Corrective Assignment to Correct the Assignor's Name Previously Recorded on Reel 042992 Frame 0524. Assignor(S) Hereby Confirms the Assignment of the Entire Interest and Good Will.
Jun 21, 2024 Reel 67803, frame 390	Staton Techiya, LLC	ST Portfolio Holdings, LLC	Assignment of Assignor's Interest
Jun 21, 2024 Reel 67803, frame 525	ST Portfolio Holdings, LLC	ST Casestech, LLC	Assignment of Assignor's Interest
May 9, 2026 Reel 75533, frame 472	ST CASE1TECH, LLC; ST Casestech, LLC; ST Famtech, LLC; ST R&DTECH, LLC; ST Tiptech, LLC; ST Sealtech, LLC; ST Biotech, LLC; ST Eartech, LLC; ST Detecttech, LLC; ST Vrtech, LLC; ST Awaretech, LLC; CASES2TECH, LLC	ST Portfolio Holdings, LLC	Merger

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.

What's changing

May 2031

Term ends May 22, 2031. Maintenance fees still fall due before then

Note

The 614 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 top 10% of utility patents granted in 2015 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.

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