IN THE UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF TEXAS

MARSHALL DIVISION

HEADWATER RESEARCH LLC,

Plaintiff,

v.

SAMSUNG ELECTRONICS CO., LTD and 

SAMSUNG ELECTRONICS AMERICA, INC.,

Defendants.

Case No. 2:23-CV-00103-JRG-RSP

DEFENDANTS’ RESPONSE TO PLAINTIFF HEADWATER’S

MOTION FOR LEAVE TO SUPPLEMENT EXPERT REPORTS BASED ON NEWLY 

PRODUCED INFORMATION

(DKT. NO. 194)

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Provided that Samsung is given leave to serve responsive expert reports, Samsung does not 

oppose Headwater’s Motion for Leave to Supplement Its Expert Reports as set forth in Docket No. 

194-1 (Mr. de la Iglesia’s supplemental report) and Docket No. 194-2 (Mr. Dell’s supplement 

report). Samsung has provided Headwater with copies of its experts’ responses to those 

supplements. On November 6, 2024, before Dr. Foster’s deposition began, Samsung shared Dr. 

Foster’s response with Headwater. Ex. 1 (Foster Supp. Rpt.) ¶¶ 1-9, 12-27, 35-45.1 Similarly, on 

November 15, Samsung shared Dr. Perryman’s response. Ex. 2 (Perryman Supp. Rpt.) ¶¶ 1-11, 

16. 2 

As detailed in earlier motion to compel briefing, Headwater chose to delay its pursuit of 

certain discovery and its motions to compel until the eleventh hour of fact discovery. Dkt. Nos. 

145, 157. Headwater’s delay resulted in Samsung producing the discovery that forms the basis for 

Headwater’s supplemental reports after the service of opening reports, and in part, after the service 

of rebuttal reports. Dkt. 174 at 2. Samsung does not oppose that Headwater be allowed to 

supplement its opening reports to address that discovery, provided Samsung is allowed to respond 

in kind. It would be unfair to prevent Samsung from responding to Headwater’s supplements, 

especially given that Headwater’s delay in pursuing discovery created the need for these 

supplements.

1 The remaining portions of Dr. Foster’s supplemental report address claim construction 

opinions that Mr. de la Iglesia first disclosed during his deposition on October 30, 2024, after 

service of Dr. Foster opening and rebuttal expert reports. 

2 The remaining portions of Dr. Perryman’s supplemental report relate to the sections of 

Dr. Foster’s supplemental report that address the claim construction opinions that Mr. de la Iglesia 

first disclosed during his deposition.

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Dated: November 18, 2024 Respectfully submitted, 

By: /s/ Katherine D. Prescott 

Ruffin B. Cordell

TX Bar No. 04820550

Michael J. McKeon

DC Bar No. 459780

mckeon@fr.com

Jared Hartzman 

DC Bar No. 1034255

hartzman@fr.com

FISH & RICHARDSON P.C.

1000 Maine Avenue, SW, Ste 1000

Washington, D.C. 20024

Telephone: (202) 783-5070

Facsimile: (202) 783-2331

Thad C. Kodish

GA Bar No. 427603

tkodish@fr.com

Benjamin K. Thompson

GA Bar No. 633211 

bthompson@fr.com

Jonathan B. Bright

GA Bar No. 256953 

jbright@fr.com

Christopher O. Green

GA Bar No. 037617

cgreen@fr.com

Noah C. Graubart

GA Bar No. 141862

graubart@fr.com

Sara C. Fish

GA Bar No. 873853

sfish@fr.com

Nicholas A. Gallo 

GA Bar No. 546590

gallo@fr.com

Vivian C. Keller (admitted pro hac vice)

GA Bar No. 651500

keller@fr.com

FISH & RICHARDSON P.C.

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1180 Peachtree St. NE, Fl. 21

Atlanta, GA 30309

Telephone: (404) 892-5005

Facsimile: (404) 892-5002

Leonard E. Davis

TX Bar No. 05521600

ldavis@fr.com

Andria Rae Crisler

TX Bar No. 24093792

crisler@fr.com

Thomas H. Reger II

Texas Bar No. 24032992

reger@fr.com

FISH & RICHARDSON P.C.

1717 Main Street, Suite 5000

Dallas, TX 75201

Telephone: (214)747-5070

Facsimile: (214) 747-2091

John-Paul R. Fryckman (pro hac vice)

CA Bar No. 317591

FISH & RICHARDSON P.C.

12860 El Camino Real, Ste. 400

San Diego, CA 92130

Telephone: (858) 678-5070

Facsimile: (858) 678-5099

Katherine D. Prescott (pro hac vice)

CA Bar No. 215496

prescott@fr.com

FISH & RICHARDSON P.C.

500 Arguello Street

Suite 400

Redwood City, CA 94063

Telephone: (650) 839-5180

Facsimile: (650) 839-5071

Kyle J. Fleming (pro hac vice)

NY Bar No. 5855499

kfleming@fr.com

FISH & RICHARDSON P.C.

7 Times Square, 20th Floor,

New York, NY 10036

Telephone: (212) 765-5070

Facsimile: (212) 258-2291

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Melissa R. Smith

State Bar No. 24001351

Melissa@gillamsmithlaw.com 

Harry Lee Gillam , Jr

gil@gillamsmithlaw.com

GILLAM & SMITH, LLP

303 South Washington Avenue

Marshall, Texas 75670

Telephone: (903) 934-8450

Facsimile: (903) 934-9257

Michael E. Jones 

State Bar No. 10929400 

mikejones@potterminton.com 

Shaun W. Hassett 

State Bar No. 24074372 

shaunhassett@potterminton.com 

POTTER MINTON, P.C. 

102 N. College Ave., Suite 900 

Tyler, Texas 75702 

Tel: (903) 597-8311 

Fax: (903) 593-0846

Lance Lin Yang

Lanceyang@quinnemanuel.com

Kevin (Gyushik) Jang

CA Bar No. 337747

kevinjang@quinnemanuel.com

Sean S. Pak

CA Bar No. 219032

seanpak@quinnemanuel.com

QUINN EMANUEL URQUHART & SULLIVAN,

LLP – LA

Los Angeles, CA 90017 USA

Tel: (213) 443-3000 

Fax: (213) 443-3100

Brady Huynh (admitted pro hac vice)

CA Bar No. 339441

bradyhuynh@quinnemanuel.com

QUINN EMANUEL URQUHART &

SULLIVAN, LLP

555 Twin Dolphin Drive, 5th Floor

Redwood Shores, CA 94065

Telephone: (650) 801-5000

Facsimile: (650) 801-5100

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Jon Bentley Hyland 

Texas Bar No. 24046131

jhyland@hilgersgraben.com

Grant K. Schmidt

Texas Bar No. 24084579

gschmidt@hilgersgraben.com

HILGERS GRABEN PLLC

7859 Walnut Hill Lane, Suite 335

Dallas, Texas 75230

Telephone: (972) 645-3097

ATTORNEYS FOR DEFENDANTS

SAMSUNG ELECTRONICS CO., LTD. AND

SAMSUNG ELECTRONICS AMERICA, INC.

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CERTIFICATE OF SERVICE

I hereby certify that a true and correct copy of the foregoing document was filed 

electronically in compliance with Local Rule CV-5 on November 18, 2024. As of this date, all 

counsel of record had consented to electronic service and are being served with a copy of this 

document through the Court’s CM/ECF system under Local Rule CV-5(a)(3)(A).

/s/ Katherine D. Prescott 

Katherine D. Prescott 

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