UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF TEXAS

MARSHALL DIVISION

HEADWATER RESEARCH LLC,

Plaintiff,

 v.

AT&T SERVICES, INC., AT&T 

MOBILITY, LLC, and AT&T CORP.,

Defendants.

Civil Action No. 2:23-cv-00397-JRG-RSP

(Lead Case)

JURY DEMANDED

HEADWATER RESEARCH LLC,

Plaintiff,

 v.

AT&T SERVICES, INC., AT&T 

MOBILITY, LLC, and AT&T CORP.,

Defendants.

Civil Action No. 2:23-cv-00398-JRG-RSP

(Member Case)

JURY DEMANDED

JOINT MOTION FOR ENTRY OF AGREED

DOCKET CONTROL ORDER

Plaintiff Headwater Research, LLC (“Headwater”) and Defendants AT&T Services, Inc., 

AT&T Mobility, LLC, And AT&T Corp. (collectively, “AT&T” or “Defendants”) (all together, 

the “Parties”), hereby jointly request that the Court enter the proposed Docket Control Order, 

attached hereto as Exhibit A.

Case 2:23-cv-00397-JRG-RSP Document 38 Filed 12/18/23 Page 1 of 3 PageID #: 368
- 2 -

Dated: December 18, 2023

 /s/ Nicholas Mathews

Nicholas Mathews (Lead Counsel) 

Texas State Bar No. 24085457 

nmathews@McKoolSmith.com 

Alexander J. Chern 

Texas State Bar No. 24109718 

achern@McKoolSmith.com 

Clare Churchman Texas State Bar No. 

24132041 

cchurchman@mckoolsmith.com 

MCKOOL SMITH, P.C. 

300 Crescent Court Suite 1500 

Dallas, TX 75201 

Telephone: (214) 978-4000 

Telecopier: (214) 978-4044 

Kevin Hess 

Texas State Bar No. 

khess@mckoolsmith.com 

MCKOOL SMITH, P.C. 

303 Colorado Street, Suite 2100 

Austin, TX 78701 

Telephone: (512) 692-8752 

Kaylee E. Hoffner Texas State Bar No. 

24127036 khoffner@McKoolSmith.com 

MCKOOL SMITH, P.C. 

600 Travis Street Suite 7000 

Houston, TX 77002 

Telephone: (713) 485-7300 

Telecopier: (713) 485-7344 

Deron R. Dacus 

State Bar No. 00790553 

ddacus@dacusfirm.com 

THE DACUS FIRM, PC 

821 ESE Loop 323, Suite 430 

Tyler, TX 75701 

Telephone: (903)705-1117 

Facsimile: (903) 581-2543 

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-00397-JRG-RSP Document 38 Filed 12/18/23 Page 2 of 3 PageID #: 369
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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

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

Case 2:23-cv-00397-JRG-RSP Document 38 Filed 12/18/23 Page 3 of 3 PageID #: 370