90/015,944MICROSTRUCTURE ENHANCED ABSORPTION PHOTOSENSITIVE DEVICES10,446,700Open

Status

Determination - Reexamination Ordered

Filed

Feb 3, 2026

Last Updated

Apr 20, 2026

Art Unit

3991

Sector (CPC)

HElectrical & Electronic
H10Semiconductor Devices
H10FInorganic Semiconductor Bodies

USPC

257Active Solid-State Devices (E.g., Transistors, Solid-State Diodes)

Reexam History (22 events)

Apr 20, 2026MREXORX - Mail Ex Parte Request for Reexamination Granted
Feb 24, 2026MRXNReexamination Formalities Notice Mailed
Feb 24, 2026MRXNReexamination Formalities Notice Mailed
Feb 24, 2026DOCKCase Docketed to Examiner in GAU
Feb 24, 2026COMPApplication Is Now Complete
Feb 23, 2026RXPCOMCompletion of Preprocessing - Released to Assigned GAU
Feb 22, 2026RXTTLRPTTitle Report
Feb 22, 2026RXNREQFDNotice of reexamination request filing date
Feb 22, 2026RXNREQAUNotice of assignment of reexamination request
Feb 4, 2026RXRLFReExam Litigation Found
Feb 4, 2026RXLITSRReexam Litigation Search Conducted
Feb 4, 2026PRXRParalegal Reexam Review Complete
Feb 4, 2026FTFSFITF set to YES - revise initial setting
Feb 3, 2026WIDSInformation Disclosure Statement (IDS) Filed
Feb 3, 2026RXOSUB.RReexamination requested by third party requester
Feb 3, 2026RXOSUBReceipt of Original Ex Parte Reexam Request
Feb 3, 2026RXIDS.RReexam - Information Disclosure Statement Filed by Third Party Requester
Feb 3, 2026RXC/SRCertificate of Service
Feb 3, 2026RXC/SRCertificate of Service
Feb 3, 2026RXAF/DRReexam - Affidavit(s), Declaration(s) and/or Exhibit(s) Filed by Third Party Requester
Feb 3, 2026RXAF/DRReexam - Affidavit(s), Declaration(s) and/or Exhibit(s) Filed by Third Party Requester
Feb 3, 2026BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)

Prosecution, PTAB & CAFC

PTAB Proceedings (IPR, PGR, CBM, DER)

IPR2025-00996IPRDiscretionary Denial

Petitioner

Samsung Electronics Co., Ltd. et al.

Petition Filed

May 20, 2025

Institution

Oct 17, 2025

Decision

Oct 17, 2025

Terminated

Oct 17, 2025

Federal Circuit (CAFC)

None found

Terminal Disclaimer

None found

Prosecution History

None found

Maintenance Fees

Grant
Oct 15, 2019
3.5-yr
Apr 15, 2023
Paid Mar 22, 2023
7.5-yr
Apr 15, 2027
11.5-yr
Apr 15, 2031
Expiry
Oct 30, 2037

Entity Status

Small Entity

Expires

Oct 30, 2037 (11.6 yr remaining)

Assignments

2018201920202021202220232024FiledM. SAIF ISLAMSHIH-PING WANGSHIH-YUAN WANGW&WSENS DEVICES, INC.IP LITFIN US 2024 LLC
AssignmentReel/Frame: 044457/0751Recorded: Nov 15, 2017

From

M. SAIF ISLAMInventor
Nov 7, 2017
SHIH-PING WANGInventor
Nov 7, 2017
SHIH-YUAN WANGInventor
Nov 7, 2017

To

W&WSENS DEVICES, INC.

OtherReel/Frame: 069230/0668Recorded: Oct 23, 2024

From

W&WSENS DEVICES, INC.
Oct 8, 2024

To

IP LITFIN US 2024 LLC