Cisco Systems, Inc. vs. OptimNet LLC

Explore the PTAB proceeding IPR2026-00322 filed by Cisco Systems, Inc. on 2026-03-27. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00322

Filing Date

2026-03-27

Accorded Filing Date

2026-03-27

Institution Decision Date

2026-07-28

Last Modified Date

2026-10-15

Proceeding Type

IPR

Termination Date

2026-07-28

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Cisco Systems, Inc.

Represented By

McPherson, Patricket al

Patent Owner / Respondent

OptimNet LLC

Represented By

MILKEY, JAMESet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2400 - Computer Networks, Multiplex & Cybersecurity

Patent Information

1 Patent Involved

Respondent Application Number 14583303

Respondent Patent Number 10020961

External Links

Espacenet

Google Patents

Respondent Inventor Sung Hyuk BYUN

Respondent Tech Center TC 2400 - Computer Networks, Multiplex & Cybersecurity

Address and Attorney/Agent Information

4 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Paratus Law Group, PLLC

Customer Number 145742

Address 1765 Greensboro Station Place, Suite 320, Tysons Corner, VA, 22102, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
52432	Lenny Jiang	571-313-7568
61446	Travis Ribar	202-293-7060
65378	Philip Johnson	571-313-7556
72721	Steve Lam	571-313-7556

Proceeding Documents

Notice: refund approved NOTICE

2026-10-15 FILING PARTY: BOARD

Download

Petitioner's Request for Refund of Post-Institution Fees OTHER

2026-10-14 FILING PARTY: PETITIONER

Download

Director Discretionary Decision: Deny RESPONSE

2026-07-28 FILING PARTY: BOARD

Download

2006

Ex. 2006 - Eslamimehr Declaration Exhibit

2026-07-02 FILING PARTY: PATENT OWNER

Download

Patent Owner's Preliminary Response POPR

2026-07-02 FILING PARTY: PATENT OWNER

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Cisco Systems, Inc. vs. OptimNet LLC

Proceeding Overview

Parties & Counsel

Petitioner

Cisco Systems, Inc.

Represented By

Patent Owner / Respondent

OptimNet LLC

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: refund approved NOTICE

Petitioner's Request for Refund of Post-Institution Fees OTHER

Director Discretionary Decision: Deny RESPONSE

Ex. 2006 - Eslamimehr Declaration Exhibit

Patent Owner's Preliminary Response POPR

Ex. 2007 - Eslamimehr CV Exhibit

Exhibit 1018 Stipulation Email Exhibit

Petitioner's Opposition to PO's Request for Discretionary Denial RESPONSE

Exhibit 2002 Exhibit

Exhibit 2005 Exhibit

Exhibit 2004 Exhibit

Exhibit 2001 Exhibit

Exhibit 2003 Exhibit

PATENT OWNER'S REQUEST FOR DISCRETIONARY DENIAL OF INSTITUTION RESPONSE

Notice: Power of Attorney NOTICE

Notice: Mandatory Notice NOTICE

Notice filing date accorded NOTICE

EX-1004 U.S. Patent Application Publication No. 2015/0146727 to Ye Exhibit

EX-1014 VPLS Technology White Paper-6W100-book Exhibit

EX-1002 Prosecution History of the ’961 Patent (“File History”) Exhibit

EX-1003 Declaration of Petitioner’s Expert 961 Exhibit

EX-1008 U.S. Patent Application Publication No. 2013/0311637 to Kamath Exhibit

EX-1012 Overlay Transport Virtualization (draft-hasmit-otv-04) Exhibit

EX-1007 VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks Exhibit

EX-1016 Infringement Chart for U.S. Patent No. 10,020,961 from OptimNet LLC Exhibit

EX-1011 U.S. Patent Application Publication No. 2013/0250951 to Koganti Exhibit

Petition: as filed PETITION

EX-1015 U.S. Patent Application Publication No. 2013/0266019 Exhibit

EX-1006 U.S. Patent Application Publication No. 2008/0247406 to Figueira Exhibit

EX-1005 U.S. Patent Application Publication No. 2009/0099602 to Nagapudi Exhibit

EX-1001 U.S. Patent No. 10,020,961 (“the ’961 Patent”) Exhibit

EX-1009 U.S. Patent Application Publication No. 2014/0086253 Exhibit

EX-1010 U.S. Patent No. 8,166,205 to Farinacci et al. (“Farinacci”) Exhibit

EX-1013 U.S. Patent No. 7,649,904 to Ghosh et al. (“Ghosh”) Exhibit

Notice: Power of Attorney NOTICE

EX-1017 U.S. Patent Application Publication No. 2013/0318219 Exhibit