Also listed on Suzhou Lekin Semiconductor Co., Ltd., an earlier holder on the record. The recorded assignments below show how it moved.

Term ended Oct 26, 2026 · High confidence

Computed 20-year base term

Held by Light Guide Innovations LLC

Filed Jul 3, 2012 as application 13/541,072 · Granted May 13, 2014

Base term, 20 years from filing

Today

20 years from filing

Term ended Oct 26, 2026

2006 2026

Clock starts
Oct 26, 2006

Term ended
Oct 26, 2026

Granted
May 13, 2014

base term 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

None

Term adjustment

No prosecution delay on this record.

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 is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 26, 2006, when application PCT/KR2006/004389, the earliest non-provisional in its chain, was filed (this one was filed Jul 3, 2012)	Oct 26, 2026	High confidence
Continuity chain	Every parent in the chain resolved	no change	High confidence
Patent term adjustment	None on file	no change	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	term ended	High confidence
Computed term end	The steps above, in order	Oct 26, 2026	High confidence

This family

US 8,237,352	In force (reinstated) Nov 2027	Nov 2027
US 8,723,411	this patent Oct 2026	Oct 2026
Application 90/015,742	Pending not computed	not computed
Application 90/015,763	Pending not computed	not computed
Application 90/015,807	Pending not computed	not computed
Application 90/015,808	Pending not computed	not computed

6 of 7 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
May 25, 2021 Reel 56366, frame 335	LG Innotek Co., Ltd.	Suzhou Lekin Semiconductor Co., Ltd.	Assignment of Assignor's Interest
Jul 10, 2024 Reel 67949, frame 47	Suzhou Lekin Semiconductor Co., Ltd.	Light Guide Innovations LLC	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.

Citations

later US patents cite this one

That is above the median of utility patents granted in 2014 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.

Photoluminescent Sheet