90/015,764LIGHT SOURCE AND DISPLAY DEVICE HAVING THE SAME8,408,778Open

Status

Non-Final Action Mailed

Filed

Dec 10, 2025

Last Updated

Jun 4, 2026

Examiner

Angela M Lie

Art Unit

3992

Requester Law Firm

Duane Morris, LLP

Requested By

Third Party

Sector (CPC)

GPhysics & Instruments
G02Optics
G02BOptical Elements

USPC

362Illumination

Reexam History (22 events)

Jun 4, 2026MR.NFRX - Mail Reexam Non-Final Action
May 21, 2026PA..Change in Power of Attorney (May Include Associate POA)
Apr 13, 2026RXFWDXDate Forwarded to Examiner
Jan 28, 2026MREXORX - Mail Ex Parte Request for Reexamination Granted
Dec 17, 2025COMPApplication Is Now Complete
Dec 17, 2025DOCKCase Docketed to Examiner in GAU
Dec 17, 2025MRXNReexamination Formalities Notice Mailed
Dec 17, 2025MRXNReexamination Formalities Notice Mailed
Dec 16, 2025RXNREQFDNotice of reexamination request filing date
Dec 16, 2025RXNREQAUNotice of assignment of reexamination request
Dec 16, 2025RXRLFReExam Litigation Found
Dec 16, 2025RXPCOMCompletion of Preprocessing - Released to Assigned GAU
Dec 16, 2025FTFIFITF set to NO - revise initial setting
Dec 16, 2025PRXRParalegal Reexam Review Complete
Dec 16, 2025RXLITSRReexam Litigation Search Conducted
Dec 11, 2025RXTTLRPTTitle Report
Dec 10, 2025RXAF/DRReexam - Affidavit(s), Declaration(s) and/or Exhibit(s) Filed by Third Party Requester
Dec 10, 2025RXIDS.RReexam - Information Disclosure Statement Filed by Third Party Requester
Dec 10, 2025RXOSUBReceipt of Original Ex Parte Reexam Request
Dec 10, 2025RXOSUB.RReexamination requested by third party requester
Dec 10, 2025BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)
Dec 10, 2025RXC/SRCertificate of Service

Prosecution, PTAB & CAFC

PTAB Proceedings (IPR, PGR, CBM, DER)

IPR2025-01526IPRDiscretionary Denial

Petitioner

Hisense USA Corp. et al.

Petition Filed

Sep 10, 2025

Institution

Jan 16, 2026

Decision

Jan 16, 2026

Terminated

Jan 16, 2026

Federal Circuit (CAFC)

None found

Terminal Disclaimer

None found

Prosecution History

None found

Maintenance Fees

Grant
Apr 2, 2013
3.5-yr
Oct 2, 2016
7.5-yr
Oct 2, 2020
Paid Sep 8, 2020
11.5-yr
Oct 2, 2024
Paid Oct 2, 2024
Expiry
May 7, 2031

Entity Status

Large Entity

Expires

May 7, 2031 (5.1 yr remaining)

Term Adjustment

+459 days (~1.3 yr)

Assignments

201020112012201320142015201620172018201920202021202220232024FiledHYUNG HWA PARKLG INNOTEK CO., LTD.SUZHOU LEKIN SEMICONDUCTOR CO., LTD.LIGHT GUIDE INNOVATIONS LLC
AssignmentReel/Frame: 023885/0733Recorded: Feb 2, 2010

From

HYUNG HWA PARKInventor
Dec 24, 2009

To

LG INNOTEK 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