Term ends Dec 1, 2026 · High confidence

Computed 20-year base term

Held by Northeastern University

Filed Jan 7, 2014 as application 14/149,271 · Granted Jul 19, 2016

Base term plus 59 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Dec 1, 2026

2006 2026

Clock starts
Oct 3, 2006

Term ends
Dec 1, 2026

Granted
Jul 19, 2016

base term patent term adjustment 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.

This patent's term runs 59 days past its 20-year base term on prosecution delay. 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.

Step	Input	Date after this step	Confidence
Base term, 20 years from filing	Clock starts Oct 3, 2006, when application 11/542,531, the earliest non-provisional in its chain, was filed (this one was filed Jan 7, 2014)	Oct 3, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+59 days, USPTO patent term adjustment record	Dec 1, 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	In force	High confidence
Computed term end	The steps above, in order	Dec 1, 2026	High confidence

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
Apr 22, 2015 Reel 35471, frame 236	McGrath, Terrence S.; Sewell, Deidre; Storey, Daniel M.	Ionic Fusion Corporation	Assignment of Assignor's Interest
Apr 22, 2015 Reel 35471, frame 362	Chameleon Scientific Corporation	Nanosurface Technologies, LLC	Assignment of Assignor's Interest
Apr 22, 2015 Reel 35478, frame 229	Ionic Fusion Corporation	Chameleon Scientific Corporation	Change of Name
Apr 22, 2015 Reel 35479, frame 34	Nanosurface Technologies, LLC	Metascape, LLC	Change of Name
Nov 9, 2018 Reel 47458, frame 801	Metascape, LLC	Northeastern University	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

Dec 2026

Term ends Dec 1, 2026. No further fees fall due before then

Note

The 59 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us

Citations

We have no citation count for this patent yet. That is not the same as never having been cited.

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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