Patent Case Watch

Patent opinions from the Eastern District of Texas and the U.S. Court of Appeals for the Federal Circuit

Weekly Digest
E.D. Tex.

Headwater Research LLC v. T-Mobile US, Inc. et al, No. 2:23-cv-00379 (E.D. Tex. June 24, 2025)

Granted in Part
Discovery Daubert / Expert Challenges
Court
U.S. District Court for the Eastern District of Texas, Marshall Division
Case No.
No. 2:23-cv-00379, Dkt. No. 314
Decided
June 24, 2025
Judge
Roy S. Payne, M.J. — Marshall
Document
Memorandum Order
Docket Entry
MEMORANDUM ORDER - Motion 190
Length
1 page
Download Opinion (PDF)

IN THE UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF TEXAS

MARSHALL DIVISION

HEADWATER RESEARCH LLC, §

§ §

Plaintiff,

§ §

v.

§ CIVIL ACTION NO. 2:23-CV-379-JRG-RSP §

T-MOBILE USA, INC. and SPRINT

(LEAD CASE)

§

CORP.,

§

§ Defendants. §

MEMORANDUM ORDER .

Before the Court is the Motion for Leave to Supplement Expert Reports Based on Newly Produced Discovery, filed by Plaintiff Headwater Research LLC. Dkt. No. 190.

A substantively identical motion was filed in a parallel litigation: Headwater Research LLC v. Verizon Communications Inc., et al, 2:23-cv-00352-JRG-RSP. See Dkt. No. 195 in 2:23-cv-00352.

For the reasons discussed in the Court’s ruling on the parallel motion (Dkt. No. 347 in 2:23-cv-00352), the instant Motion is also GRANTED IN PART as to the Apple Data, and otherwise DENIED.

SIGNED this 3rd day of January, 2012. S IGNED this 24th day of June, 2025.

ROY S. PAYNE

UNITED STATES MAGISTRATE JUDGE

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Cite this opinion

Headwater Research LLC v. T-Mobile US, Inc. et al, No. 2:23-cv-00379 (E.D. Tex. June 24, 2025).

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