IN THE UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF TEXAS

MARSHALL DIVISION

HEADWATER RESEARCH LLC,

Plaintiff,

v.

CELLCO PARTNERSHIP d/b/a VERIZON 

WIRELESS and VERIZON CORPORATE 

SERVICES GROUP, INC.,

Defendants.

CIVIL ACTION NO. 2:23-CV-00352 

JURY TRIAL DEMANDED

AGREED MOTION FOR EXTENSION OF TIME TO COMPLY WITH P.R. 3-3 & 3-4 

AND STANDING ORDER REGARDING SUBJECT-MATTER ELIGIBILITY 

CONTENTIONS

Plaintiff Headwater Research LLC (“Headwater”) and Defendants Cellco Partnership, 

d/b/a Verizon Wireless and Verizon Corporate Services Group, Inc. (collectively, “Verizon”)

hereby stipulate and agree, with the Court’s permission, to an extension of time for Verizon’s 

deadline to comply with P.R. 3-3 & 3-4 and the Standing Order Regarding Subject-Matter 

Eligibility Contentions from December 14, 2023 to on or before December 21, 2023. 

The Parties do not file this Agreed Motion for purposes of delay, but rather to allow 

Verizon adequate time to address its obligations required by the Patent Rules and the Standing 

Order. 

Case 2:23-cv-00352-JRG-RSP Document 53 Filed 12/11/23 Page 1 of 4 PageID #: 886
2 

DATED: December 11, 2023 /s/ James S. Tsuei

Marc Fenster

CA State Bar No. 181067

Email: mfenster@raklaw.com

Reza Mirzaie

CA State Bar No. 246953

Email: rmirzaie@raklaw.com

Brian Ledahl

CA State Bar No. 186579

Email: bledahl@raklaw.com

Ben Wang

CA State Bar No. 228712

Email: bwang@raklaw.com

Dale Chang

CA State Bar No. 248657

Email: dchang@raklaw.com

Paul Kroeger

CA State Bar No. 229074

Email: pkroeger@raklaw.com 

Neil A. Rubin

CA State Bar No. 250761

Email: nrubin@raklaw.com

Kristopher Davis

CA State Bar No. 329627

Email: kdavis@raklaw.com

James S. Tsuei

CA State Bar No. 285530

Email: jtsuei@raklaw.com

Philip Wang

CA State Bar No. 262239

Email: pwang@raklaw.com

Amy Hayden

CA State Bar No. 287026

Email: ahayden@raklaw.com

Jason M. Wietholter

CA State Bar No. 337139

Email: jwietholter@raklaw.com

RUSS AUGUST & KABAT

12424 Wilshire Blvd. 12th Floor

Los Angeles, CA 90025

Telephone: 310-826-7474 

Attorneys for Plaintiff Headwater Research 

LLC

Case 2:23-cv-00352-JRG-RSP Document 53 Filed 12/11/23 Page 2 of 4 PageID #: 887
3 

/s/ Katherine Q. Dominguez

 

Katherine Q. Dominguez (Lead Attorney)

kdominguez@gibsondunn.com

Josh A. Krevitt

jkrevitt@gibsondunn.com 

Brian Rosenthal

brosenthal@gibsondunn.com

GIBSON, DUNN & CRUTCHER LLP

200 Park Avenue

New York, New York 10166-0193 

Telephone: (212) 351-4000 

Facsimile: (212) 351-4035 

Andrew Robb

arobb@gibsondunn.com 

GIBSON, DUNN & CRUTCHER LLP

310 University Avenue

Palo Alto, CA 94301

Telephone: (650) 849-5300 

Deron R. Dacus

ddacus@dacusfirm.com 

THE DACUS FIRM, P.C.

821 ESE Loop 323, Suite 430

Tyler, Texas 75701

Phone: (903) 705-1117 

Attorneys for Defendants Cellco Partnership, 

d/b/a Verizon Wireless and Verizon Corporate 

Services Group, Inc.

Case 2:23-cv-00352-JRG-RSP Document 53 Filed 12/11/23 Page 3 of 4 PageID #: 888
4 

CERTIFICATE OF SERVICE

I hereby certify that, on December 11, 2023, I caused the foregoing to be electronically 

filed with the Clerk of the Court using CM/ECF, which will send notification of such filing to all 

registered participants. 

 /s/ Katherine Q. Dominguez 

Katherine Q. Dominguez

CERTIFICATE OF CONFERENCE

I hereby certify that, on December 11, 2023, counsel for Verizon conferred with counsel 

for Plaintiff Headwater Research LLC and that this Agreed Motion is unopposed. 

/s/ Katherine Q. Dominguez 

 Katherine Q. Dominguez 

Case 2:23-cv-00352-JRG-RSP Document 53 Filed 12/11/23 Page 4 of 4 PageID #: 889