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

Collateral for a security interest recorded Jul 21, 2026 (Twin Brook Capital Partners, LLC).

Term ends Jan 18, 2027 · High confidence

Computed 20-year base term

Held by Core Health & Fitness, LLC

Filed Jan 19, 2004 as application 10/759,539 · Granted Jun 15, 2010

Base term plus 1095 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Jan 18, 2027

2004 2027

Clock starts
Jan 19, 2004

Term ends
Jan 18, 2027

Granted
Jun 15, 2010

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

1,095

Days of term adjustment

Read from the USPTO patent term adjustment record, not recalculated here.

None

Terminal disclaimer

No disclaimer on this record.

3 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 1095 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. 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 Jan 19, 2004, when this application, 10/759,539, was filed	Jan 19, 2024	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+1095 days, USPTO patent term adjustment record	Jan 18, 2027	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	3 of 3 maintenance fees paid	In force	High confidence
Computed term end	The steps above, in order	Jan 18, 2027	High confidence

This family

US 6,997,855	Term ended Oct 2020	Oct 2020
US 7,736,281	this patent Jan 2027	Jan 2027
Application 12/815,145	Abandoned not computed	not computed

3 of 4 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
Aug 16, 2004 Reel 15677, frame 776	Corbalis, Kevin; Chiles, Mark William; Cornejo, Victor Torres; Marin, Felipe J.	Unisen, Inc., Dba Star Trac	Assignment of Assignor's Interest
Nov 10, 2010 Reel 25543, frame 456	Unisen, Inc., a California Corporation Dba Star Trac	Kelmscott Communications LLC, a Delaware Limited Liability Company Dba Orange County Printing	Lien
Dec 8, 2010 Reel 25520, frame 733	Unisen, Inc., a California Corporation Dba Star Trac	Kelmscott Communications LLC, a Delaware Limited Liability Company Dba Orange County Printing	Lien
Oct 10, 2011 Reel 27036, frame 959	Kelmscott Communications LLC, Dba Orange County Printing	Unisen, Inc., Dba Star Trac	Release of Lien
Apr 15, 2013 Reel 30213, frame 390	Core Fitness, LLC; Core Health & Fitness, LLC; Core Industries LLC	Pnc Bank, National Association	Security Agreement
Apr 22, 2013 Reel 30258, frame 439	Unisen, Inc.	Core Industries, LLC	Nunc Pro Tunc Assignment
Jan 10, 2020 Reel 51478, frame 336	Core Fitness LLC; Core Industries LLC; Land America Health & Fitness Co. Ltd.	Core Health & Fitness, LLC	Assignment of Assignor's Interest
Feb 3, 2020 Reel 51700, frame 402	Core Health & Fitness, LLC	Pnc Bank, National Association	Security Interest
Mar 5, 2020 Reel 52029, frame 112	Core Health & Fitness, LLC	Cortland Capital Market Services LLC	Security Interest
Jun 17, 2024 Reel 67742, frame 802	Core Health & Fitness, LLC	Acquiom Agency Services LLC	Security Interest
Jun 17, 2024 Reel 67748, frame 529	Cortland Capital Market Services LLC	Core Health & Fitness, LLC	Release of Security Interest
Jul 21, 2026 Reel 75340, frame 51	Core Health & Fitness, LLC	Twin Brook Capital Partners, LLC	Security Interest
Aug 4, 2026 Reel 75525, frame 313	Pnc Bank, National Association	Core Health & Fitness, LLC	Release of Security Interest
Aug 4, 2026 Reel 75526, frame 523	Acquiom Agency Services LLC	Core Health & Fitness, LLC	Release of Security 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

Jan 2027

Term ends Jan 18, 2027. No further fees fall due before then

Note

The 1095 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 25% of utility patents granted in 2010 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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