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

Collateral for a security interest recorded Mar 28, 2022 (PNC Bank, National Association).

Term ends Apr 2, 2030 · High confidence

Computed 20-year base term

Held by Luna Innovations Incorporated

Filed Mar 26, 2008 as application 11/576,215 · Granted Mar 5, 2013

Base term plus 1645 days of patent term adjustment (USPTO delay)

Today

20 years from filing

Term ends Apr 2, 2030

2005 2030

Clock starts
Sep 30, 2005

Term ends
Apr 2, 2030

Granted
Mar 5, 2013

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

1,645

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 1645 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 Sep 30, 2005, when application PCT/US2005/035478, the earliest non-provisional in its chain, was filed (this one was filed Mar 26, 2008)	Sep 30, 2025	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	+1645 days, USPTO patent term adjustment record	Apr 2, 2030	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	Apr 2, 2030	High confidence

This family

US 6,849,852	Term ended Feb 2021	Feb 2021
Application PCT/US2002/036584	PCT application no patent term	no patent term
Application PCT/US2002/038265	PCT application no patent term	no patent term
Application PCT/US2003/003203	PCT application no patent term	no patent term
Application PCT/US2003/003181	PCT application no patent term	no patent term
Application PCT/US2003/003323	PCT application no patent term	no patent term
Application PCT/US2003/039553	PCT application no patent term	no patent term
US 7,348,608	Term ended no later than Feb 2023	no later than Feb 2023

8 of 27 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
Mar 26, 2008 Reel 20705, frame 952	Zimdars, David A.; Chemovsky, Artur; Williamson, Steven L.; Wolter, Klaus	Picometrix, LLC	Assignment of Assignor's Interest
Feb 12, 2013 Reel 29800, frame 507	Picometrix, LLC	Partners for Growth III, L.P.	Security Agreement
Mar 12, 2014 Reel 32420, frame 795	Picometrix, LLC	Silicon Valley Bank	Security Interest
May 19, 2015 Reel 35719, frame 460	Advanced Photonix, Inc.; Picometrix, LLC	Silicon Valley Bank	Security Agreement
Aug 4, 2017 Reel 43197, frame 862	Partners for Growth III, L.P.	Advanced Photonix, Inc.; Picometrix, LLC	Release of Security Interest
Aug 4, 2017 reel/frame not recorded	Partners for Growth III, L.P.	Advanced Photonix, Inc.	Release of Security Interest
Aug 4, 2017 reel/frame not recorded	Partners for Growth III, L.P.	Picometrix, LLC	Release of Security Interest
Feb 4, 2021 Reel 55145, frame 911	Picometrix, LLC	Terametrix LLC	Change of Name
Mar 4, 2021 Reel 56455, frame 331	Luna Innovations Incorporated; Former Luna Subsidiary, Inc.; General Photonics Corp.	Pnc Bank, National Association	Security Interest
May 25, 2021 Reel 56356, frame 234	Terametrix LLC	Luna Innovations Incorporated	Assignment of Assignor's Interest
Mar 28, 2022 Reel 59525, frame 575	Luna Innovations Incorporated	Pnc Bank, National Association	Security Interest
Jul 20, 2024 Reel 68465, frame 55	Luna Innovations Incorporated; Luna Technologies, Inc.; General Photonics Corp.	White Hat Lightning Opportunity LP (the “Agent”)	Rider to Security Agreement – Patents

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

Apr 2030

Term ends Apr 2, 2030. No further fees fall due before then

Note

The 1645 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 2013 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.

Optical Delay