90/015,742PHOTOLUMINESCENT SHEET8,237,352Open

Status

Response after Non-Final Action Entered (or Ready for Examiner Action)

Filed

Dec 2, 2025

Last Updated

Aug 24, 2026

Art Unit

3991

Requester Law Firm

Unknown

Requested By

Third Party

Sector (CPC)

BMechanical & Manufacturing
B32Layered Products
B32BLayered Products

USPC

313Electric Lamp And Discharge Devices

Reexam History (30 events)

Aug 24, 2026RXA...Response after Non-Final Action
Aug 24, 2026RXC/SRCertificate of Service
Aug 18, 2026MRXD.RX - Mail Extension of Time Period for Response Denied
Jul 25, 2026RXC/SRCertificate of Service
Jul 25, 2026RXRQ/TRequest for Extension of Time
Jun 24, 2026MR.NFRX - Mail Reexam Non-Final Action
Jun 23, 2026PA..Change in Power of Attorney (May Include Associate POA)
May 11, 2026MRDRXRX - Mail Decision Merging Reexam and Reissue Proceedings -- Reexam
Mar 21, 2026RXFWDXDate Forwarded to Examiner
Jan 15, 2026MREXORX - Mail Ex Parte Request for Reexamination Granted
Jan 13, 2026IDSCInformation Disclosure Statement considered
Jan 12, 2026MRXNReexamination Formalities Notice Mailed
Jan 12, 2026COMPApplication Is Now Complete
Jan 12, 2026DOCKCase Docketed to Examiner in GAU
Jan 12, 2026MRXNReexamination Formalities Notice Mailed
Jan 11, 2026RXNREQFDNotice of reexamination request filing date
Jan 11, 2026RXPCOMCompletion of Preprocessing - Released to Assigned GAU
Jan 11, 2026RXNREQAUNotice of assignment of reexamination request
Jan 11, 2026RXC.ADRReexam - Correspondence Address Change for Third Party Requester
Jan 11, 2026FTFIFITF set to NO - revise initial setting
Jan 6, 2026RXRLFReExam Litigation Found
Jan 6, 2026PRXRParalegal Reexam Review Complete
Jan 6, 2026RXLITSRReexam Litigation Search Conducted
Dec 11, 2025RXTTLRPTTitle Report
Dec 2, 2025WIDSInformation Disclosure Statement (IDS) Filed
Dec 2, 2025RXC/SRCertificate of Service
Dec 2, 2025RXPA..RReexam - Change in Power of Attorney (May Include Associate POA) for Third Party Requester
Dec 2, 2025RXOSUB.RReexamination requested by third party requester
Dec 2, 2025BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)
Dec 2, 2025RXOSUBReceipt of Original Ex Parte Reexam Request

Prosecution, PTAB & CAFC

PTAB Proceedings (IPR, PGR, CBM, DER)

None found

Federal Circuit (CAFC)

None found

Terminal Disclaimer

None found

Prosecution History

None found

Maintenance Fees

Grant
Aug 7, 2012
3.5-yr
Feb 7, 2016
7.5-yr
Feb 7, 2020
Paid Jan 7, 2020
11.5-yr
Feb 7, 2024
Paid Jan 10, 2025
Expiry
Jan 17, 2030

Entity Status

Large Entity

Expires

Jan 17, 2030 (3.8 yr remaining)

Term Adjustment

+375 days (~1.0 yr)

Other

USPTO Event: Expire PatentUSPTO Event: Maintenance Fee Reminder MailedUSPTO Event: Petition to Accept Late Payment of Maintenance Fee Payment Filed

Assignments

2009201020112012201320142015201620172018201920202021202220232024FiledYOUNG-JOO AHNYOUNG-WOOK KOCHOONG-YONG SOHNKDT CO., LTD.LG INNOTEK CO., LTD.KDT CO., LTD.,SUZHOU LEKIN SEMICONDUCTOR CO., LTD.LIGHT GUIDE INNOVATIONS LLC
AssignmentReel/Frame: 022074/0216Recorded: Jan 8, 2009

From

KDT CO., LTD.
Oct 15, 2008

To

LG INNOTEK CO., LTD.

AssignmentReel/Frame: 022074/0161Recorded: Jan 8, 2009

From

YOUNG-JOO AHNInventor
Oct 15, 2008
YOUNG-WOOK KOInventor
Oct 15, 2008
CHOONG-YONG SOHNInventor
Oct 15, 2008

To

KDT CO., LTD.,

AssignmentReel/Frame: 056366/0335Recorded: May 25, 2021

From

LG INNOTEK CO., LTD.
May 20, 2021

To

SUZHOU LEKIN SEMICONDUCTOR CO., LTD.

AssignmentReel/Frame: 067949/0047Recorded: Jul 10, 2024

From

SUZHOU LEKIN SEMICONDUCTOR CO., LTD.
Jun 25, 2024

To

LIGHT GUIDE INNOVATIONS LLC