Cisco Systems, Inc. vs. ZILKR CLOUD TECHNOLOGIES, LLC

Explore the PTAB proceeding IPR2023-00553 filed by Cisco Systems, Inc. on 2023-02-02. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2023-00553

Filing Date

2023-02-02

Accorded Filing Date

2023-02-02

Institution Decision Date

2023-09-21

Last Modified Date

2026-10-19

Proceeding Type

IPR

Termination Date

2024-09-18

Trial Status

Final Written Decision

Parties & Counsel

Petitioner

Cisco Systems, Inc.

Represented By

Foster, Theodoreet al

Patent Owner / Respondent

ZILKR CLOUD TECHNOLOGIES, LLC

Represented By

Liddle, Bradleyet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2600 - Communications

Patent Information

1 Patent Involved

Respondent Application Number 14087768

Respondent Patent Number 9210254

External Links

Espacenet

Google Patents

Respondent Inventor Evin Hunt

Respondent Tech Center TC 2600 - Communications

Address and Attorney/Agent Information

31 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name Conley Rose, P.C.

Customer Number 30652

Address 4965 Preston Park Blvd, Suite 195E, Plano, TX, 75093, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
32363	Gregory Maag	713-238-8000
32846	Daniel Stanger	703-691-5648
37432	James Ruland	972-665-3605
39624	Rodney Carroll	972-731-2288
39800	Michael Piper	972-731-2284
45438	Joseph Brown Jr	972-731-2288
45475	Michael Konczal	972-731-2288
45962	Donna Mason	202-982-5609
48359	William Dietrich	972-731-2288
48859	Clinton Stuart	972-731-2288
50487	Grant Rodolph	972-731-2288
52276	Brooks Taylor	972-731-2288
57524	Matthew Moscicki	713-238-8000
57660	Brandt Howell	972-731-2288
58932	Michael Hann	972-731-2288
59901	Nicholas Beaulieu	469-429-0362
60703	Nam Huynh	972-731-2288
62110	Octavio Dacosta	972-731-2288
63297	Adam Stegge	512-610-3455
66274	Elexis Jones	972-731-2288
66334	Jonathan Polk	972-731-2288
67353	Andrew Metrailer	972-731-2288
68071	Sam Williams	202-596-7267
70549	Robert Kent	972-731-2288
70812	Gayatry Nair	972-731-2288
72907	Ryan Jenlink	973-731-2288
74365	Joseph Conte Iii	972-665-3611
74785	James Hooper	713-238-8010
75356	Matthew Gibson	713-238-8000
80021	Nidhi Bansal	856-408-4057
L1124	Nidhi Bansal	972-731-2288

Proceeding Documents

3002

E-mail authorizing withdrawal of backup counsel Exhibit

2026-10-19 FILING PARTY: BOARD

Download

Petitioner's Updated Mandatory Notices NOTICE

2026-10-19 FILING PARTY: PETITIONER

Download

Other: Fed Circuit mandate OTHER

2026-10-05 FILING PARTY: BOARD

Download

Other: other court decision OTHER

2026-10-05 FILING PARTY: BOARD

Download

Patent Owner Notice of Appeal NOTICE

2024-11-19 FILING PARTY: PATENT OWNER

Download

Cisco Systems, Inc. vs. ZILKR CLOUD TECHNOLOGIES, LLC

Proceeding Overview

Parties & Counsel

Petitioner

Cisco Systems, Inc.

Represented By

Patent Owner / Respondent

ZILKR CLOUD TECHNOLOGIES, LLC

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

E-mail authorizing withdrawal of backup counsel Exhibit

Petitioner's Updated Mandatory Notices NOTICE

Other: Fed Circuit mandate OTHER

Other: other court decision OTHER

Patent Owner Notice of Appeal NOTICE

Determining All Challenged Claims Unpatentable 35 U.S.C. § 318(a) FINAL

Other: Hearing transcript OTHER

Patent Owner Updated Mandatory Notice NOTICE

Corrected Patent Owner Sur Reply OTHER

Ex. 2010 Patent Owner Demonstrative Exhibits Exhibit

Petitioner's Updated Exhibit List NOTICE

Ex.1038 - Petitioner's Oral Argument Demonstratives (Zilkr'254) Exhibit

Patent Owner Current Exhibit List NOTICE

Petitioner's Updated Mandatory Notices NOTICE

Order: Setting Oral Argument ORDER

Petitioner's Request for Oral Argument OTHER

Patent Owner Request for Oral Argument OTHER

Ex. 2009 Houh Deposition Tr. (Apr. 17, 2024) Exhibit

Patent Owner Sur Reply OTHER

Notice of Deposition: Henry Houh NOTICE

Ex.1033 - Sprint Call Forwarding Exhibit

Ex.1030 - Supp. Expert Declaration of Henry Houh Exhibit

Ex.1036 - US6005929 (Chemin) Exhibit

Ex.1037 - Merriam-Webster's Collegiate Dictionary, 10th Edition Exhibit

Ex.1031 - ATT Call Forwarding Exhibit

Ex.1029 - Madisetti Deposition Transcript Exhibit

Ex.1034 - Verizon Call Intercept Exhibit

Petitioner's Reply to Patent Owner's Response REPLYTOOPP

Ex.1028 - ATT Digital Life Exhibit

Ex.1035 - US20100329140A1 (Buford) Exhibit

Ex.1032 - Verizon Call Forwarding Exhibit

Notice of Withdrawal of Declaration NOTICE

Petitioner's Notice of Deposition for Vijay K. Madisetti, PhD NOTICE

Exhibit 2007 Claim Construction Order Exhibit

Exhibit 2008 Houh Deposition Transcript Exhibit

Patent Owner Response RESPONSE

Exhibit 2006 Declaration of Dr. Madisetti Exhibit

ZILKR CLOUD TECHNOLOGIES, LLC.’S POWER OF ATTORNEY NOTICE

ZILKR CLOUD TECHNOLOGIES, LLC’S UPDATED MANDATORY NOTICES NOTICE

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

Notice of Deposition: Henry Houh NOTICE

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

Exhibit 3001 Exhibit

Order: SCHEDULING ORDER ORDER

Petitioner's Authorized Sotera Stipulation OTHER

ZILKR CLOUD TECHNOLOGIES, LLC’S SUBSTITUTE POWER OF ATTORNEY NOTICE

CORRECTED DECLARATION OF THERESA M. DAWSON, ESQ. FOR PRO HAC VICE ADMISSION 37 C.F.R. § 42.10 Exhibit

ZILKR CLOUD TECHNOLOGIES, LLC’S UPDATED MANDATORY NOTICES NOTICE

Patent Owner Preliminary Response POPR

Exhibit 2004 Exhibit

Exhibit 2003 Exhibit

Exhibit 2002 Exhibit

DECLARATION OF THERESA M. DAWSON, ESQ. FOR PRO HAC VICE ADMISSION Exhibit

UNOPPOSED MOTION FOR PRO HAC VICE ADMISSION MOTION

Notice of Filing Date Accorded to Petition NOTICE

Notice : Power of Attorney NOTICE

Notice : Mandatory Notice NOTICE

Petition for Inter Partes Review - '254 Zilkr PETITION

Petitioner's Power of Attorney - Zilkr '254 NOTICE

Ex.1017 - US2308778 (Prince) Exhibit

Ex.1002 - Prosecution History of US9210254 (Hunt) Exhibit

Ex.1011 - Facebook Raises Hackles on Email (Letzing) Exhibit

Ex.1007 - US7089585 (Dharmarajan) Exhibit

Ex.1019 - Amazon.com_ Easy Microsoft Office Outlook 2003 Exhibit

Ex.1005 - US20070043687A1 (Bodart) Exhibit