In a case that ended without a merits determination, Social Positioning Input Systems, LLC voluntarily dismissed its patent infringement action against Valve, Corp. and Gearbox Software, LLC without prejudice on August 20, 2024, just under a year after filing in the Eastern District of Texas. The case, docketed as No. 2:23-cv-00422, centered on U.S. Patent No. 9,261,365 B2, which covers real-time location and positioning system technology. The court accepted the Rule 41(a)(1)(A)(i) voluntary dismissal, mooting all pending relief requests and leaving the door open for future re-filing.

For IP strategists and patent practitioners, this outcome is a reminder that voluntary dismissals without prejudice in the Eastern District of Texas carry significant strategic weight — preserving the plaintiff’s option to refile while avoiding an adverse judgment. Companies operating in the real-time location systems (RTLS) space, including those deploying indoor positioning for industrial and gaming applications, should monitor this patent and its owner closely, as the dismissal without prejudice leaves underlying infringement claims unresolved.

Case Overview

The Parties

The Patent at Issue

U.S. Patent No. 9,261,365 B2 covers technology for determining and communicating the real-time location and positional information of objects or individuals within an environment — the core of what is known as Real-Time Location Systems (RTLS). The patent’s claims relate to tracking and managing position data for entities such as goods, vehicles, employees, or devices in indoor industrial or interactive environments. Real-world applications include warehouse management, factory floor tracking, and potentially interactive or gaming environments that rely on spatial positioning inputs.

• • US9261365B2

Legal Representation

Plaintiff Counsel: Garteiser Honea PLLC (lead: Randall T. Garteiser)
Defendant Counsel: Kilpatrick Townsend & Stockton LLP; Kilpatrick Townsend & Stockton, LLP (Seattle); Potter Minton PC (lead: Christopher P. Damitio)

Litigation Timeline & Procedural History

The case was filed on September 18, 2023, in the United States District Court for the Eastern District of Texas — a forum historically favored by patent plaintiffs for its efficient dockets, plaintiff-friendly procedural rules, and experienced patent judiciary. Filing in the Eastern District of Texas signals a deliberate venue strategy by Social Positioning Input Systems and its counsel at Garteiser Honea PLLC, a firm with extensive NPE litigation experience in that jurisdiction. The case was classified as a first-instance district court proceeding, meaning no prior appellate or administrative proceedings appear on the record.

The case resolved after 337 days — approximately eleven months — without reaching claim construction, summary judgment, or trial. The termination was triggered by Plaintiff’s filing of a Notice of Voluntary Dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(i), which allows a plaintiff to dismiss without a court order before the opposing party files an answer or a motion for summary judgment. The court accepted and acknowledged the notice on August 20, 2024, dismissing all claims without prejudice and denying all pending relief as moot. The without-prejudice designation is the critical detail: Social Positioning Input Systems retains the full right to refile these claims against Valve, Gearbox, or other parties in a future action.

The Verdict & Legal Analysis

Outcome

The Court dismissed all claims and causes of action asserted by Social Positioning Input Systems, LLC against Valve, Corp. and Gearbox Software, LLC without prejudice pursuant to Rule 41(a)(1)(A)(i). No damages were awarded, no injunctive relief was granted, and no finding of infringement or invalidity was made. All pending requests for relief not explicitly addressed in the dismissal order were denied as moot.

Verdict Cause Analysis

The voluntary dismissal without prejudice under Rule 41(a)(1)(A)(i) reflects a strategic plaintiff decision rather than a court-imposed outcome — the following factors are relevant to understanding this termination:

• Rule 41(a)(1)(A)(i) allows a plaintiff to voluntarily dismiss without a court order if the opposing party has not yet served an answer or a motion for summary judgment, preserving plaintiff’s right to refile the same claims in future proceedings.
• The dismissal without prejudice means no res judicata or claim preclusion attaches — Social Positioning Input Systems retains the ability to assert U.S. Patent No. 9,261,365 B2 against these or other defendants in a subsequent action.
• The eleven-month duration before dismissal suggests the parties may have engaged in preliminary negotiations, licensing discussions, or claim evaluation that led the plaintiff to withdraw rather than proceed to costly claim construction and discovery phases.
• The defendants’ engagement of multiple attorneys from Kilpatrick Townsend & Stockton LLP and Potter Minton PC signals a robust defense posture was mounted, which may have contributed to plaintiff’s decision to withdraw rather than face a potentially adverse claim construction or IPR challenge.

Legal Significance

1. 1. Because the dismissal was entered without prejudice and without a court ruling on the merits, U.S. Patent No. 9,261,365 B2 remains enforceable and unchallenged by any invalidity or non-infringement finding, making it a live threat for any entity operating in the RTLS technology space.
2. 2. A voluntary dismissal under Rule 41(a)(1)(A)(i) prior to an answer or dispositive motion forecloses defendants’ ability to seek attorney’s fees under 35 U.S.C. § 285 unless exceptional circumstances are independently established, limiting defendants’ cost recovery options.
3. 3. The case adds to the pattern of NPE litigation in the Eastern District of Texas targeting technology companies with arguable connections to location or spatial data processing, suggesting that companies in gaming, logistics, and industrial IoT should proactively assess their exposure to RTLS-related patent portfolios.

Strategic Takeaways

For Patent Attorneys:

• When defending against NPE plaintiffs asserting RTLS or positioning patents in the Eastern District of Texas, early and aggressive engagement — including threatening inter partes review — may accelerate voluntary dismissal and reduce overall client exposure.
• Counsel for similarly situated defendants should preserve all fee-shifting arguments under § 285 by documenting litigation misconduct or objective unreasonableness at each stage, even when the plaintiff voluntarily dismisses, in anticipation of potential refiling.
• Monitor U.S. Patent No. 9,261,365 B2 and related family members for reissuance, continuation filings, or assignment activity, as the without-prejudice dismissal signals the plaintiff may be repositioning for a future enforcement campaign.
• The use of Rule 41(a)(1)(A)(i) dismissal before an answer underscores the importance of accelerating the answer deadline or filing a Rule 12(b) motion early to shift procedural leverage and limit plaintiff’s unilateral exit strategy.

For IP Professionals:

• In-house IP teams at companies deploying indoor positioning, RTLS, or spatial tracking technology should add U.S. Patent No. 9,261,365 B2 to their watch lists and conduct a landscape analysis of Social Positioning Input Systems’ full portfolio to anticipate future enforcement actions.
• Given the without-prejudice dismissal, procurement teams and product counsel at gaming studios and industrial IoT companies should perform FTO analysis before launching new products that incorporate real-time location or social positioning features.

For R&D Teams:

• R&D teams developing warehouse, factory, or interactive location-tracking applications should review the claims of US9261365B2 and explore design-around alternatives to avoid future infringement exposure, especially given the patent remains valid and enforceable.
• Engineering teams should document all prior art searches and design decisions relating to RTLS and indoor positioning features to build a strong invalidity and non-infringement record in the event this or a related patent is asserted against their products in future litigation.