UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF TEXAS

MARSHALL DIVISION

HEADWATER RESEARCH LLC,

Plaintiff,

 v.

T-MOBILE US, INC., T-MOBILE USA, 

INC., and SPRINT CORP.,

Defendants.

Civil Action No. 2:23-cv-00379-JRG-RSP

(Lead Case)

JURY DEMANDED

HEADWATER RESEARCH LLC,

Plaintiff,

 v.

T-MOBILE US, INC., T-MOBILE USA, 

INC., and SPRINT CORP.,

Defendants.

Civil Action No. 2:23-cv-00377-JRG-RSP

(Member Case)

JURY DEMANDED

JOINT MOTION FOR ENTRY OF AGREED

DOCKET CONTROL ORDER

Plaintiff Headwater Research, LLC (“Headwater”) and Defendants T-Mobile USA, Inc. 

(“T-Mobile USA”), T-Mobile US, Inc. (“T-Mobile US”), and Sprint Corp. (“Sprint”) (collectively, 

“T-Mobile” or “Defendants”),

1 (all together, the “Parties”) hereby jointly request that the Court 

enter the proposed Docket Control Order, attached hereto as Exhibit A.

1 Defendants assert that T-Mobile US, Inc. is not a proper party to this lawsuit and is not subject 

to personal jurisdiction in this District, such that this order only binds the other named defendants.

Case 2:23-cv-00379-JRG-RSP Document 40 Filed 12/18/23 Page 1 of 4 PageID #: 301
- 2 -

Dated: December 18, 2023

 /s/ Katherine Q. Dominguez

Katherine Q. Dominguez 

(NY Bar No. 4741237)

kdominguez@gibsondunn.com

Brian Rosenthal

(NY Bar No. 3961380)

brosenthal@gibsondunn.com

GIBSON, DUNN & CRUTCHER LLP

200 Park Avenue

New York, NY 10166-0193

Telephone: (212) 351-4000

Facsimile: (212) 351-4035

 Andrew W. Robb (CA Bar No. 291438)

 arobb@gibsondunn.com

GIBSON, DUNN & CRUTCHER LLP

1881 Page Mill Road

Palo Alto, CA 94034

Telephone: (650) 849-5334

Facsimile: (650) 849-5034

Deron R. Dacus (TX Bar No. 00790553)

THE DACUS FIRM, P.C.

821 ESE Loop 323, Suite 430 

Tyler, Texas 75701

Telephone: (903) 705-1117

Email: ddacus@dacusfirm.com

Attorneys for Defendants

 /s/ Marc Fenster

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 

Case 2:23-cv-00379-JRG-RSP Document 40 Filed 12/18/23 Page 2 of 4 PageID #: 302
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CERTIFICATE OF SERVICE

I hereby certify that all counsel of record who are deemed to have consented to electronic 

service are being served this 18th day of December 2023, with a copy of this document via the 

Court’s CM/ECF system per Local Rule CV-5(a)(3).

/s/ Marc Fenster

Marc Fenster

Case 2:23-cv-00379-JRG-RSP Document 40 Filed 12/18/23 Page 3 of 4 PageID #: 303
- 4 -

CERTIFICATE OF CONFERENCE

The undersigned certifies that counsel complied with the requirements of Eastern District 

of Texas Local Rule CV-7(h). The parties are in agreement on filing this Joint Motion.

/s/ Marc Fenster 

Marc Fenster

Case 2:23-cv-00379-JRG-RSP Document 40 Filed 12/18/23 Page 4 of 4 PageID #: 304