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IN THE 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 CLAIM CONSTRUCTION CHART (LOCAL P.R. 4-5(d))

Pursuant to Local Patent Rule 4-5(d), and the Court’s Docket Control Order (Dkt. 41), 

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

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

“parties”) respectfully submit the following Joint Claim Construction Chart containing the agreed 

and disputed claim terms, phrases, or clauses of U.S. Patent Nos. 8,589,541 (the “’541 Patent”); 

9,198,042 (the “’042 Patent”); 9,215,613 (the “’613 Patent”); and 8,924,543 (the “’543 Patent”). 

A chart identifying the parties’ disputed constructions is attached hereto as Exhibit A, listing the 

complete language of claims with terms in bold type and separate columns for each party’s 

Case 2:23-cv-00397-JRG-RSP Document 85 Filed 11/14/24 Page 1 of 5 PageID #:

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proposed construction, pursuant to P.R. 4-5(d). The parties have not agreed upon any 

constructions.

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Dated: November 14, 2024

/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

Adam Hoffman

CA State Bar No. 218740

Email: ahoffman@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

Qi (Peter) Tong

TX State Bar No. 24119042 

Email: ptong@raklaw.com

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RUSS AUGUST & KABAT

12424 Wilshire Blvd., 12th Floor

Los Angeles, CA 90025

Telephone: 310-826-7474

Andrea L. Fair

TX State Bar No. 24078488 

MILLER FAIR HENRY PLLC 

1507 Bill Owens Parkway 

Longview, Texas 75604 

Telephone: 903-757-6400 

andrea@millerfairhenry.com

Attorneys for Plaintiff

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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 14th day of November 2024, 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

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