Google LLC vs. Cellular South Inc

Explore the PTAB proceeding IPR2025-00875 filed by Google LLC on 2025-05-10. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2025-00875

Filing Date

2025-05-10

Accorded Filing Date

2025-05-10

Institution Decision Date

2025-10-17

Last Modified Date

2026-03-11

Proceeding Type

IPR

Termination Date

2025-10-17

Trial Status

Discretionary Denial

Parties & Counsel

Petitioner

Google LLC

Represented By

Keefe, Heidiet al

Patent Owner / Respondent

Cellular South Inc

Represented By

Simpson, Amyet al

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 2600 - Communications

Patent Information

1 Patent Involved

Respondent Application Number 14175741

Respondent Patent Number 9940972

External Links

Espacenet

Google Patents

Respondent Inventor Naeem Lakhani et al

Respondent Tech Center TC 2600 - Communications

Address and Attorney/Agent Information

9 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name STEPTOE LLP/DC

Customer Number 27890

Address 1330 CONNECTICUT AVENUE, N.W., WASHINGTON, DC, 20036, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
42800	Z Li	212-506-3912
43279	Carl Wischhusen	212-378-7572
44978	James Nuttall	312-577-1300
51031	John Abramic	312-577-1300
68835	Ronald Vogel	212-378-7611
69653	Scott Richey	202-429-6436
70202	Robert Kappers	312-577-1300
74803	Daniel Gelwicks	312-577-1300
75978	Heather Hildreth	202-429-1308

Proceeding Documents

Petitioner's Notice of Appeal OTHER

2026-03-11 FILING PARTY: PETITIONER

Download

Order Denying Director Review of Institution Decision REHEARING

2026-01-12 FILING PARTY: BOARD

Download

Authorized Response to Director Review Request OTHER

2025-11-24 FILING PARTY: PATENT OWNER

Download

3100

Email, Subject_IPR2025-00875 and IPR2025-00876 Director Review Requests Exhibit

2025-11-18 FILING PARTY: BOARD

Download

Petitioner's Request for Directors Review of Decision Denying Institution REQUEST

2025-11-17 FILING PARTY: PETITIONER

Download

Google LLC vs. Cellular South Inc

Proceeding Overview

Parties & Counsel

Petitioner

Google LLC

Represented By

Patent Owner / Respondent

Cellular South Inc

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 OTHER

Order Denying Director Review of Institution Decision REHEARING

Authorized Response to Director Review Request OTHER

Email, Subject_IPR2025-00875 and IPR2025-00876 Director Review Requests Exhibit

Petitioner's Request for Directors Review of Decision Denying Institution REQUEST

Director Discretionary Decision: Deny RESPONSE

Patent Owner's Preliminary Response POPR

Feb. 26, 2021 Notice of References Cited in U.S. Pat. App. No. 15/903,423 Exhibit

Petitioner's Response to Patent Owner's Request for Discretionary Denial of Institution RESPONSE

Webpage from DocketNavigator.com, showing Judge Yvonne Gonzalez Rogers decisions on motions to stay pending IPR Exhibit

Petitioner's Updated Exhibit List NOTICE

Webpage from Lens.org, showing patent citations to U.S. Patent No. 6,415,316 B1 (available at https://www.lens.org/lens/patent/171-551-750-012-572/citations?l=en&view=in) Exhibit

Verdict form, Rembrandt Social Media, LP v. Facebook, Inc., Case No. 1:13-cv-158, D.I. 523 (E.D. Va. June 13. 2014) Exhibit

Cellular South, Inc. v. Google LLC, Case No. 6:24-cv-00245-DAE, Document 59 (W.D. Tex. Feb. 12, 2025) Exhibit

US Patent 11,126,853 Exhibit

CMC transcript Exhibit

US Patent 9,940,972 Exhibit

Complaint Exhibit

NAB release article Exhibit

IDS Exhibit

972 Redline comparison Exhibit

References Cited Exhibit

CSI Prelim Infringement Contentions Exhibit

US Patent 10,218,954 Exhibit

PO's Request for Discretionary Denial of Institution RESPONSE

Proof of Service-Executed Exhibit

Joint CMO as Modified Exhibit

Vu Article Exhibit

Notice: NOTICE OF FILING DATE ACCORDED TO PETITION AND TIME FOR FILING PATENT OWNER PRELIMINARY RESPONSE NOTICE

Notice: Mandatory Notice NOTICE

Notice: Power of Attorney NOTICE

US Pat App Pub No. 2007/0112630 A1 to Wai Kit Lau et al. Exhibit

US Pat No. 9,697,230 B2 to Henry Houh et al. Exhibit

US Pat No. 9,940,972 B2 to Naeem Lakhani et al. Exhibit

US Pat App Pub No. 2011/0305394 A1 to David W. Singer et al. Exhibit

Declaration of Henry Houh Ph.D. Exhibit

US Pat App Pub No. 2004/0125877 A1 to Shin-Fu Chang et al. Exhibit

Petition: as filed PETITION

Part 1 - Excerpts from S. Hacker, MP3 The Definitive Guide (1st ed. 2000) Exhibit

Notice: Power of Attorney NOTICE

Part 2 - Excerpts from S. Hacker, MP3 The Definitive Guide (1st ed. 2000) Exhibit

'972 Patent File History Exhibit

US Pat App Pub No. 2012/0239401 A1 to Takayuki Arakawa Exhibit

US Pat No. 9,407,942 B2 to Andrew Brenneman Exhibit

Adobe Flash Video File Format Specifications Ver. 10.1 Exhibit

US Pat App Pub No. 2012/0078712 A1 to James A. Fontana et al. Exhibit

Proof of Service of Complaint Exhibit