Maxell Ltd. v. OO Electronics Co LTD et al.

Maxell Ltd., a Japan-based operating company, filed this patent infringement lawsuit against OO Electronics Co LTD and OO Electronics America Inc. Maxell is a diversified electronics manufacturer engaged in various sectors, including energy products, industrial materials, and consumer electronics, known for its batteries, optical components, and data storage solutions. Maxell actively asserts its intellectual property, frequently engaging in patent litigation as part of its monetization strategy against major electronics manufacturers. While the prompt identifies "OO Electronics Co LTD et al." as defendants, public docket records for case number 5:25-cv-00052 in the Eastern District of Texas consistently list Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. as the defendants. Therefore, the specific business activities of the "OO Electronics" entities named in the prompt could not be verified in the context of this particular litigation due to this discrepancy in publicly available information.

The asserted patent in this case is U.S. Patent No. 8,471,950, which generally describes a method and apparatus for displaying content and recording a displayed image, such as screen capture functionality on an electronic device. The accused products, if the actual defendants are Samsung as suggested by public dockets, would likely involve consumer electronic devices like smartphones or tablets that incorporate such screen recording or content display and capture features. Maxell has a history of asserting patents related to smart device technologies, including methods for unlocking devices, locating recordings, and managing digital data, against other electronics companies.

This ongoing case was filed on April 21, 2025, in the United States District Court for the Eastern District of Texas, Texarkana Division, and is presided over by District Judge Robert W. Schroeder III. The Eastern District of Texas is a historically significant venue for patent litigation, often chosen by plaintiffs for its reputation for plaintiff-friendly procedural rules and efficient trial schedules. Although a 2017 Supreme Court decision (TC Heartland) initially limited venue options, the EDTX has seen a resurgence in patent filings, partly due to strategies involving foreign affiliates, and remains a top district for patent litigation. A Markman hearing was initially set for May 6, 2026, then reset for May 12, 2026, but the case has since been stayed as of April 2, 2026, pending the outcome of an Inter Partes Review (IPR) challenging the patent's validity at the USPTO. This IPR linkage is a notable procedural development, indicating a direct challenge to the patentability of US Patent 8471950.

Maxell Ltd. filed a patent infringement suit, 5:25-cv-00052, against Samsung Electronics Co., LTD and OO Electronics America Inc (identified as Samsung Electronics America Inc in court records) in the Eastern District of Texas on April 21, 2025. The suit asserts U.S. Patent 8,471,950, among others.

Here are the key legal developments and outcomes:

• Filing & Initial Pleadings (2025-04-21 - 2026-02-18)

  • Maxell Ltd. filed its complaint on April 21, 2025.
  • Samsung filed an Answer and Counterclaims, to which Maxell filed an Answer to the Counterclaims.
  • An Amended Pleadings deadline was set for February 18, 2026, by a Docket Control Order signed on August 18, 2025.

• Pre-trial Motions & Discovery Milestones

  • An E-Discovery Order was issued.
  • On August 18, 2025, District Judge Robert W. Schroeder III signed a Docket Control Order and an Order Focusing Patent Claims and Prior Art. Joint motions for a Protective Order and for Entry of a Discovery Order were also filed around this time.

• Trial Events, Verdict, and Post-Trial Motions (May 2025 - October 2025)

  • In May 2025, Maxell secured a $111.7 million jury verdict against Samsung for willful infringement of three Maxell patents covering smart device technologies. The jury also found that Samsung failed to prove the invalidity of two of the asserted patents.
  • On October 13, 2025, the court overturned the jury's verdict by granting Samsung's motion for judgment as a matter of law (JMOL). The court found insufficient evidence to support infringement on all three patents and invalidated claims in two of the three asserted patents. District Judge Robert W. Schroeder III also denied Maxell's requests for enhanced damages, interest, and a permanent injunction, deferring issues of willfulness and damages until after appeal.

• Claim Construction (Markman) Outcomes

  • A Markman Hearing was scheduled for May 6, 2026. As of today's date (May 25, 2026), this hearing should have occurred. However, the available search results do not yet detail the specific outcome of this Markman hearing. It's possible the Markman hearing relates to aspects of the case not fully resolved by the JMOL or potential new claims/patents if an appeal resulted in a remand. Given the JMOL ruling in October 2025, the context of this May 2026 Markman hearing is unclear from the provided snippets.

• Parallel PTAB IPR Proceedings

  • On August 29, 2025, Samsung Electronics Co Ltd and Samsung Electronics America Inc filed an Inter Partes Review (IPR2025-01315) against Maxell Ltd. for U.S. Patent 8,471,950 B2, the patent asserted in this litigation.
  • The PTAB instituted the IPR on February 17, 2026, meaning the Board decided to proceed with a review of the patent's patentability. This IPR is currently in the "Post-Institution" phase.

• Current Posture

  • The case currently stands with the jury verdict largely overturned by the court's grant of JMOL in favor of Samsung on October 13, 2025. An appeal is anticipated given the deferral of certain issues until after appeal. Meanwhile, the validity of patent 8,471,950 is being reviewed in an active IPR proceeding before the PTAB.

Maxell Ltd. is represented by the following counsel:

• Melissa Richards Smith
  • Role: Partner (likely lead or local counsel, given her extensive experience in the Eastern District of Texas for both plaintiffs and defendants).
  • Firm: Gillam & Smith, LLP, Marshall, TX.
  • Experience: Ms. Smith is a highly experienced trial lawyer specializing in intellectual property litigation within the Eastern District of Texas, where she has achieved numerous courtroom successes for both plaintiffs and defendants. She was inducted into the Texas Lawyer's Texas Verdicts Hall of Fame in 2013 and is recognized by Fortune 500 companies as a "go-to" lawyer for intellectual property matters. She has served as local counsel in over three thousand patent cases.

Note on Defendant Discrepancy: While the case metadata provided in the prompt identifies the defendant as "OO Electronics Co LTD et al.", search results for case number 5:25-cv-00052 consistently show "Samsung Electronics Co., LTD et al." as the defendant. Therefore, the DLA Piper attorneys identified in initial searches are representing the defendant Samsung, not the plaintiff Maxell Ltd.

The defendants in Maxell Ltd. v. OO Electronics Co LTD et al. (which public records indicate are Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc.) are represented by counsel from several law firms.

Counsel for Defendants Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc.:

• Melissa Richards Smith

  • Role: Local Counsel
  • Firm: Gillam & Smith, LLP
  • Office Location: Tyler, Texas
  • Note: Gillam & Smith is a well-known East Texas firm frequently involved in patent litigation in the Eastern District of Texas.

• Erik R. Fuehrer

  • Role: Lead Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: Austin, Texas
  • Note: Fuehrer has experience in patent litigation, including representing Samsung in other cases.

• Robert Buergi

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: Silicon Valley (East Palo Alto), California
  • Note: Buergi is also listed as petitioner counsel for Samsung in a related IPR proceeding (IPR2025-01312) concerning a different patent, which references the 5:25-cv-00052 district court case.

• Angela Whitesell

  • Role: Counsel
  • Firm: DLA Piper (US)
  • Office Location: Austin, Texas
  • Note: Whitesell is a partner at DLA Piper with experience in intellectual property litigation.

• Mark D. Fowler

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: Dallas, Texas
  • Note: Fowler is noted for his work in complex patent litigation, particularly in the Eastern District of Texas.

• Michael D. Jay

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: Los Angeles, California
  • Note: Jay is a partner focusing on intellectual property and technology litigation.

• Salvatore P. Tamburo

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: Austin, Texas
  • Note: Tamburo is a partner whose practice includes patent litigation.

• Paulina Starostka

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: Boston, Massachusetts
  • Note: Starostka is an associate at DLA Piper with experience in patent litigation.

• Sangwon Sung

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: San Diego, California
  • Note: Sung is involved in intellectual property and technology litigation at DLA Piper.

• Sean C. Cunningham

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: San Diego, California
  • Note: Cunningham is a partner with a focus on patent litigation and IP matters.

• James M. Heintz

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: Reston, Virginia
  • Note: Heintz is involved in patent litigation and also listed in IPR documents related to Maxell v. Samsung.

• Alan A. Limbach

  • Role: Counsel
  • Firm: DLA Piper US LLP
  • Office Location: Palo Alto, California
  • Note: Limbach is listed as petitioner counsel for Samsung in a related IPR proceeding (IPR2025-01310) against Maxell.

• Erin P. Gibson

  • Role: Counsel
  • Firm: DLA Piper LLP (US)
  • Office Location: San Diego, California
  • Note: Gibson is an attorney at DLA Piper with experience in intellectual property.

It appears the defendants are primarily represented by a large team from DLA Piper, with local counsel from Gillam & Smith, LLP.