90/015,682FAST PROTECTION IN RING TOPOLOGIES7,061,859Open

Status

Final Action Mailed

Filed

Nov 13, 2025

Last Updated

Jul 16, 2026

Art Unit

3992

Requester Law Firm

Haynes and Boone, LLP

Requested By

Third Party

P.O. Law Firm

Brown Rudnick, LLP

Sector (CPC)

HElectrical & Electronic
H04Telecommunications
H04LTransmission of Digital Information

USPC

370Multiplex Communications

Reexam History (24 events)

Jul 16, 2026MRXFRRX - Mail Final Rejection
May 26, 2026RXA...Response after Non-Final Action
Mar 25, 2026MR.NFRX - Mail Reexam Non-Final Action
Mar 1, 2026RXFWDXDate Forwarded to Examiner
Dec 19, 2025MREXORX - Mail Ex Parte Request for Reexamination Granted
Dec 3, 2025DOCKCase Docketed to Examiner in GAU
Nov 26, 2025MRXNReexamination Formalities Notice Mailed
Nov 26, 2025MRXNReexamination Formalities Notice Mailed
Nov 26, 2025COMPApplication Is Now Complete
Nov 25, 2025RXPCOMCompletion of Preprocessing - Released to Assigned GAU
Nov 25, 2025RXNREQFDNotice of reexamination request filing date
Nov 25, 2025RXNREQAUNotice of assignment of reexamination request
Nov 25, 2025FTFIFITF set to NO - revise initial setting
Nov 23, 2025PRXRParalegal Reexam Review Complete
Nov 16, 2025RXTTLRPTTitle Report
Nov 16, 2025RXRLFReExam Litigation Found
Nov 16, 2025RXLITSRReexam Litigation Search Conducted
Nov 13, 2025RXPA..RReexam - Change in Power of Attorney (May Include Associate POA) for Third Party Requester
Nov 13, 2025RXOSUB.RReexamination requested by third party requester
Nov 13, 2025RXOSUBReceipt of Original Ex Parte Reexam Request
Nov 13, 2025RXIDS.RReexam - Information Disclosure Statement Filed by Third Party Requester
Nov 13, 2025RXC/SRCertificate of Service
Nov 13, 2025RXAF/DRReexam - Affidavit(s), Declaration(s) and/or Exhibit(s) Filed by Third Party Requester
Nov 13, 2025BIG.Entity Status Set To Undiscounted (Initial Default Setting or Status Change)

Prosecution, PTAB & CAFC

PTAB Proceedings (IPR, PGR, CBM, DER)

IPR2025-01088IPRDiscretionary Denial

Petitioner

Cisco Systems, Inc.

Petition Filed

Jun 2, 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
Jun 13, 2006
3.5-yr
Dec 13, 2009
7.5-yr
Dec 13, 2013
11.5-yr
Dec 13, 2017
Paid Dec 3, 2017
Expiry
Oct 5, 2023

Entity Status

Small Entity

Expires

Oct 5, 2023 (expired)

Term Adjustment

+766 days (~2.1 yr)

Assignments

200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025FiledYOSSI BARSHESHETCORRIGENT SYSTEMS LTD.ORCKIT-CORRIGENT LTDHUDSON BAY IP OPPORTUNITIES MASTER FUND, LPORCKIT IP, LLCSUCA LTD.QUICKER CONNECTIONS LLCIP LITFIN US 2024 LLCHUDSON BAY IP OPPORTUNITIES MASTER FUND LPRelease
AssignmentReel/Frame: 012130/0608Recorded: Aug 30, 2001

From

YOSSI BARSHESHETInventor
Jul 30, 2001

To

CORRIGENT SYSTEMS LTD.

Name ChangeReel/Frame: 032579/0201Recorded: Apr 1, 2014

From

CORRIGENT SYSTEMS LTD.
Sep 6, 2009

To

ORCKIT-CORRIGENT LTD

OtherReel/Frame: 030033/0774Recorded: Mar 18, 2013

From

ORCKIT-CORRIGENT LTD.
Mar 18, 2013

To

HUDSON BAY IP OPPORTUNITIES MASTER FUND, LP

ReleaseReel/Frame: 030887/0983Recorded: Jul 26, 2013

From

HUDSON BAY IP OPPORTUNITIES MASTER FUND LP
Jul 23, 2013

To

ORCKIT-CORRIGENT LTD.

AssignmentReel/Frame: 038529/0087Recorded: May 10, 2016

From

CORRIGENT SYSTEMS LTD.
Apr 25, 2016
ORCKIT COMMUNICATION LTD.
Apr 25, 2016
ORCKIT-CORRIGENT LTD.
Apr 25, 2016

To

ORCKIT IP, LLC

AssignmentReel/Frame: 070953/0085Recorded: Apr 26, 2025

From

ORCKIT IP, LLC.
Aug 10, 2022

To

SUCA LTD.

AssignmentReel/Frame: 071087/0641Recorded: May 12, 2025

From

SUCA LTD
Oct 25, 2022

To

QUICKER CONNECTIONS LLC

OtherReel/Frame: 069230/0593Recorded: Oct 23, 2024

From

QUICKER CONNECTIONS LLC
Oct 8, 2024

To

IP LITFIN US 2024 LLC