Mimzi, LLC v. Honda Motor Co., Ltd.

Automotive Tech Lawsuit Voluntarily Dismissed by Patent Assertion Entity

Case Overview & Background

In a brief but notable case, Mimzi, LLC, a non-practicing entity (NPE), filed a patent infringement lawsuit against automotive giant Honda Motor Co., Ltd. in the U.S. District Court for the Eastern District of Texas. The lawsuit, filed in June 2025, alleged that Honda's vehicle infotainment systems, particularly those equipped with Apple CarPlay, infringed on Mimzi's patents related to data retrieval and user interfaces. However, the case was short-lived, as Mimzi filed a voluntary notice of dismissal without prejudice in February 2026, before Honda had filed a formal answer. This procedural move allows Mimzi to refile the lawsuit at a later date, leaving the substantive infringement questions unresolved.

The plaintiff, Mimzi, LLC, has been identified as an NPE or patent assertion entity (PAE), a company that primarily acquires and enforces patents rather than producing its own goods or services. Mimzi has a history of litigating patents from the same family against a range of technology and automotive companies, including Samsung, Nissan, Ford, and others. The defendant, Honda Motor Co., Ltd., is a major multinational automobile manufacturer that incorporates sophisticated infotainment and connectivity systems into its vehicles. The accused technology centered on Honda and Acura vehicles that feature infotainment systems capable of integrating with smartphones through platforms like Apple CarPlay and Android Auto, which allow drivers to access navigation, media, and messaging apps via the car's touchscreen display and voice commands. The lawsuit asserted U.S. Patent No. 11,100,163, which generally relates to data retrieval and interface systems for connected vehicles.

The case (2:25-cv-00600) was filed in the Eastern District of Texas, a venue long known for its experience with patent cases and procedural rules often seen as favorable to plaintiffs, which can encourage settlements. This district has recently regained its status as the nation's top venue for patent litigation. The lawsuit is notable as part of a broader assertion campaign by Mimzi targeting the increasingly complex and valuable intellectual property space of connected vehicle technology. This sector is a frequent target for NPEs as automakers integrate more third-party software and connectivity features. The voluntary dismissal without a merits decision suggests a strategic calculation by Mimzi, possibly influenced by parallel validity challenges at the Patent Trial and Appeal Board (PTAB) against related Mimzi patents, a common defense tactic for defendants in such cases.

Key Legal Developments and Outcome

The patent infringement litigation between Mimzi, LLC and Honda Motor Co., Ltd. was short-lived, concluding with a voluntary dismissal by the plaintiff before any substantive legal disputes were adjudicated. The case was assigned to Judge Rodney Gilstrap in the Marshall Division of the Eastern District of Texas.

Filing & Initial Pleadings

• 2025-06-04: Complaint Filed
  Mimzi, LLC filed a complaint for patent infringement against Honda Motor Co., Ltd., asserting U.S. Patent Nos. 11,100,163 and 9,792,361. The lawsuit, docketed as case number 2:25-cv-00600, alleged that infotainment systems in Honda and Acura vehicles equipped with Apple CarPlay infringed upon Mimzi's patents related to data search and retrieval interfaces. The complaint was filed in the U.S. District Court for the Eastern District of Texas.

• 2025-07-10: Summons Executed
  A summons was returned executed, indicating that Honda Motor Co., Ltd. was formally served with the lawsuit on June 6, 2025.

• No Answer or Counterclaims from Defendant
  Honda did not file an answer or any counterclaims in the district court case. The case was dismissed before the deadline for Honda to formally respond to the complaint.

Pre-trial Motions and Other Proceedings

The case did not progress to the stages of substantive motion practice, such as motions to dismiss, transfer, or for summary judgment. Similarly, no Markman claim construction hearing was held.

Parallel PTAB Proceedings

While not directly targeting the '163 patent at issue in this specific query, a related patent from the same plaintiff has faced challenges at the Patent Trial and Appeal Board (PTAB).

• 2025-10-29: Ex Parte Reexamination of Related Patent
  Unified Patents, a third-party organization, filed an ex parte reexamination proceeding against U.S. Patent No. 9,792,361, another patent asserted by Mimzi against Honda and other automakers. This action indicates that Mimzi's broader patent portfolio was facing validity challenges, which may have influenced its litigation strategy. There is no public record of a PTAB challenge filed by Honda against the '163 patent.

Dismissal and Final Disposition

• 2026-02-09: Notice of Voluntary Dismissal
  Mimzi, LLC filed a Notice of Voluntary Dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(i). This rule permits a plaintiff to unilaterally dismiss its own lawsuit without a court order, provided the defendant has not yet filed an answer or a motion for summary judgment.

• 2026-02-18: Case Dismissed
  The court entered an order dismissing the case without prejudice. The "without prejudice" designation means that Mimzi, LLC retains the right to refile the lawsuit against Honda on the same patent claims at a future date. The court ordered each party to bear its own costs and attorneys' fees. The case was officially terminated on the court's docket on February 19, 2026.

Outcome Summary

The litigation concluded without any ruling on the merits of the infringement or validity of U.S. Patent No. 11,100,163. Mimzi's decision to voluntarily dismiss the case at the earliest stage, before Honda had formally appeared or responded, allowed it to exit the litigation while preserving its right to sue again. This strategic move is common in patent assertion campaigns, potentially allowing for regrouping, further analysis, or settlement negotiations outside of active litigation.

Plaintiff's Counsel

Based on a review of the court docket, plaintiff Mimzi, LLC was represented by a single attorney who filed the complaint and the subsequent notice of voluntary dismissal.

• Name and Role: Cortney S. Alexander (Lead Counsel)
• Firm and Office Location: Kent & Risley LLC (Alpharetta, GA)
• Note on Experience: Mr. Alexander has nearly two decades of experience in patent litigation and has served as lead counsel in over 120 patent infringement cases, including actions on behalf of 21st Century Garage against several automakers.

No Counsel of Record for Honda Motor Co., Ltd.

No outside or in-house counsel for the defendant, Honda Motor Co., Ltd., formally appeared on the court docket in this case.

The plaintiff, Mimzi, LLC, filed a voluntary notice of dismissal on February 19, 2026. This dismissal was filed under Federal Rule of Civil Procedure 41(a)(1)(A)(i), which permits a plaintiff to dismiss a case without a court order before the opposing party files an answer or a motion for summary judgment.

Case analysis confirms that Mimzi dismissed the suit before Honda had formally responded, and as a result, no defense counsel ever made an appearance of record. Consequently, there is no information available on the docket regarding the attorneys or law firms that would have represented Honda in this matter.