Cisco Systems, Inc. vs. Portsmouth Network Corporation

Explore the PTAB proceeding IPR2024-00503 filed by Cisco Systems, Inc. on 2024-01-26. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2024-00503

Filing Date

2024-01-26

Accorded Filing Date

2024-01-26

Institution Decision Date

2024-08-06

Last Modified Date

2025-08-27

Proceeding Type

IPR

Termination Date

2025-08-04

Trial Status

Final Written Decision - Appealed

Parties & Counsel

Petitioner

Cisco Systems, Inc.

Represented By

Foster, Theodoreet al

Patent Owner / Respondent

Portsmouth Network Corporation

Represented By

Nuttall, 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 09756946

Respondent Patent Number 7035279

External Links

Espacenet

Google Patents

Respondent Inventor Leon Bruckman

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

Address and Attorney/Agent Information

1 Registered Practitioner

Power of Attorney & Correspondence

Firm / Entity Name May Patents Ltd. c/o Dorit Shem-Tov

Customer Number 131926

Address P.O.B 7230, Ramat-Gan, 5217102, ISRAEL

Attorney / Agent Information

Reg #	Name	Phone
73612	Yehuda Binder	781-747-6018

Proceeding Documents

Petitioner's Notice of Appeal ('279 patent) NOTICE

2025-08-27 FILING PARTY: PETITIONER

Download

Final Written Decision: Final Written Decision Determining No Challenged Claims Unpatentable 35 U.S.C. sec. 318a FINAL

2025-08-04 FILING PARTY: BOARD

Download

Other: Hearing transcript OTHER

2025-06-11 FILING PARTY: BOARD

Download

1031

Ex.1031 - Petitioner Demonstratives Exhibit

2025-04-29 FILING PARTY: PETITIONER

Download

Petitioner's Updated Exhibit List NOTICE

2025-04-29 FILING PARTY: PETITIONER

Download

Cisco Systems, Inc. vs. Portsmouth Network Corporation

Proceeding Overview

Parties & Counsel

Petitioner

Cisco Systems, Inc.

Represented By

Patent Owner / Respondent

Portsmouth Network Corporation

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Petitioner's Notice of Appeal ('279 patent) NOTICE

Final Written Decision: Final Written Decision Determining No Challenged Claims Unpatentable 35 U.S.C. sec. 318a FINAL

Other: Hearing transcript OTHER

Ex.1031 - Petitioner Demonstratives Exhibit

Petitioner's Updated Exhibit List NOTICE

Patent Owner's Demonstratives Exhibit

Patent Owner's Updated Exhibit List NOTICE

ORDER Setting Oral Argument 37 C.F.R. § 42.70 ORDER

Panel Change Order ORDER

Patent Owner's Request for Oral Argument OTHER

Petitioner's Request for Oral Argument OTHER

Patent Owner's Sur-Reply OTHER

Ex.1028 - 2_23-cv-00441-JRG_83_Cisco Responsive Claim Construction Brief Exhibit

Ex.1030 - Olivier Declaration, IPR2022-01114 Exhibit

Ex.1024 - Exhibit A - Olivier Declaration Exhibit

Ex.1023 - PO Opening Claim Construction Brief Exhibit

Ex.1022 - The SRP MAC Layer Protocol Exhibit

Ex.1026 - Olivier, Ph.D., James (Deposition) Exhibit

Ex.1029 - Olivier Declaration, IPR2022-00687 Exhibit

Petitioner Reply REPLYTOOPP

Ex.1025 - US6272131 (Ofek) Exhibit

Ex.1027 - US5461611 (Drake) Exhibit

Petitioner's Notice of Deposition for James Olivier, PhD NOTICE

Declaration of James Olivier, Ph.D. Exhibit

Patent Owner's Response RESPONSE

Patent Owner's Updated Exhibit List NOTICE

E.D. Tex. Civil Case No. 2:23-cv-441; Joint Claim Construction and Pre-Hearing Statement (Filed September 11, 2024) Exhibit

Curriculum Vitae of James Olivier, Ph.D. Exhibit

Deposition Transcript of Dr. Nader Mir dated October 18, 2024 Exhibit

Notice of Joint Stipulation to Modify Due Dates 1-3 NOTICE

Notice of Deposition of Dr. Nader Mir NOTICE

Petitioner's Updated Mandatory Notices NOTICE

Institution Decision: DECISION Granting Institution of Inter Partes Review 35 U.S.C. § 314 DECISION

SCHEDULING ORDER ORDER

Docket Navigator – E.D. Tex. Time to Trial Statistics Exhibit

Patent Owner's Preliminary Response POPR

E.D. Tex. Civil Case No. 2:23-cv-441; Cisco Initial Invalidity Contentions (w/o exhibits) (Served February 20, 2024) Exhibit

US Patent 5,461,611 Exhibit

Notice : Mandatory Notice NOTICE

Patent Owner's Power of Attorney NOTICE

Notice: Notice filing date accorded NOTICE

Ex.1002 - US7035279 File History Exhibit

Ex.1008 - US6839767 (Davies) Exhibit

Ex.1004 - Curriculum Vitae of Nader F. Mir Exhibit

Ex.1013 - Invalidity Contention Due Date Extension Exhibit

Petitioner's Power of Attorney - Portsmouth '279 IPR NOTICE

Ex.1016 - US6111673 (Chang) Exhibit

Ex.1019 - RFC2026 Exhibit

Ex.1011 - Complaint Exhibit

Ex.1006 - US6680912 (Kalman) Exhibit

Ex.1021 - USPTO Interim Procedure (Compelling Merits) Exhibit

Ex.1020 - US6738819 (Li) Exhibit

Ex.1009 - US6424624 (Galand) Exhibit

Ex.1015 - US6072773 (Fichou) Exhibit

Ex.1017 - US6161137 (Ogdon) Exhibit

Ex.1005 - US6920113 (Kovvali) Exhibit

Ex.1001 - US7035279 Exhibit

Ex.1007 - US 5920697 (Masters) Exhibit

Ex.1012 - Notice of 3-1 and 3-2 Disclosures Exhibit

Ex.1010 - US6157955 (Narad) Exhibit

IPR Petition - Cisco-Portsmouth '279 PETITION

Ex.1018 - RFC2892 Exhibit

Ex.1003 - Declaration of Nadar Mir - '279 Portsmouth Exhibit

Ex.1014 - Docket Control Order Exhibit