In a case that closed within four months of filing, Samsung Electronics Co., Ltd. and Smart Mobile Technologies, LLC jointly agreed to dismiss Federal Circuit Appeal No. 24-1655 on August 5, 2024, just 123 days after it was filed. The appeal centered on the patentability and invalidity of U.S. Patent No. 9,084,291, which covers interfacing internet protocol-based wireless devices with networks. The dismissal was entered under Fed. R. App. P. 42(b), with each side bearing its own costs — a settlement-neutral resolution that left no appellate precedent on the underlying validity question.

For IP professionals and patent strategists in the wireless communications sector, the voluntary dismissal of this appeal carries strategic significance beyond its procedural simplicity. When a global technology giant like Samsung and a patent assertion entity reach a mutual exit at the Federal Circuit level, it signals a negotiated resolution — whether through licensing, covenant not to sue, or cross-licensing — that practitioners must account for when assessing the litigation posture of wireless protocol patents. R&D teams developing IP-based wireless interface technologies should closely monitor the ‘291 patent’s claims landscape.

Case Overview

The Parties

The Patent at Issue

U.S. Patent No. 9,084,291 (Application No. 14/273,323) covers technology for connecting wireless devices — such as smartphones and tablets — to networks using internet protocol (IP)-based communication methods. In practical terms, the patent addresses how wireless handsets interface with network infrastructure at the protocol layer, enabling seamless data transmission across IP-enabled mobile networks. This type of foundational wireless networking IP has broad applicability to smartphones, IoT devices, and any mobile hardware requiring IP-based connectivity.

• • US9084291B1

Legal Representation

Plaintiff Counsel: Fish & Richardson LLP (lead: Christopher Dryer)
Defendant Counsel: Graves & Shaw LLP (lead: Greer N. Shaw)

Litigation Timeline & Procedural History

This appeal was filed at the U.S. Court of Appeals for the Federal Circuit — the exclusive appellate venue for U.S. patent matters — on April 4, 2024, and categorized as a patentability/invalidity action. The Federal Circuit’s jurisdiction here reflects that the underlying dispute over U.S. Patent No. 9,084,291 was appealed from a prior adjudication, most likely a Patent Trial and Appeal Board (PTAB) inter partes review or a district court invalidity ruling, making this a critical second-stage proceeding in the patent’s validity lifecycle.

The 123-day duration from filing to closure is notably short for a Federal Circuit appeal, where merits briefing alone typically spans six to twelve months. The voluntary dismissal under Fed. R. App. P. 42(b) — entered without any substantive opinion or order on the merits — strongly indicates the parties reached a private resolution before appellate briefing was completed. The clean cost allocation — each side bearing its own — further signals a negotiated outcome rather than a concession of weakness by either party, preserving both parties’ ability to characterize the resolution favorably.

The Verdict & Legal Analysis

Outcome

The Federal Circuit ordered the proceeding dismissed pursuant to Fed. R. App. P. 42(b)(2) based on the parties’ mutual agreement, with each side bearing its own costs. No merits determination was issued regarding the validity or invalidity of U.S. Patent No. 9,084,291, and no damages, injunctive relief, or fee-shifting award was entered. The dismissal leaves the patent’s validity status — and any prior PTAB or district court ruling — as the last substantive word on record.

Verdict Cause Analysis

The verdict cause of ‘Patentability / Invalidity-Cancellation Action’ reflects the following legal framework underlying this appeal:

• The appeal arose from an invalidity or cancellation challenge to U.S. Patent No. 9,084,291, likely originating at PTAB or in district court, where Samsung contested whether the patent’s claims met statutory patentability requirements under 35 U.S.C. §§ 102, 103, or 112.
• A voluntary dismissal under Fed. R. App. P. 42(b) requires agreement of all parties, confirming that both Samsung and Smart Mobile Technologies affirmatively consented to terminate the appellate proceeding without a ruling on the merits of the invalidity challenge.
• Because no appellate opinion was issued, the Federal Circuit created no binding precedent on the claim construction, prior art scope, or patentability standards applicable to wireless IP interface technology under the ‘291 patent.
• The symmetric cost-bearing provision — each side paying its own fees — is a hallmark of a negotiated settlement or licensing resolution, distinguishing this dismissal from a unilateral concession by either appellant or appellee.

Legal Significance

1. 1. The voluntary dismissal at the Federal Circuit level means the ‘291 patent’s validity was never adjudicated on appeal, leaving any prior PTAB or district court findings as the operative legal record — a status that third-party defendants or licensees must independently evaluate.
2. 2. Because no claim construction or patentability ruling was issued, the scope of U.S. Patent No. 9,084,291’s claims remains contested, which increases FTO uncertainty for companies developing IP-based wireless device networking technologies.
3. 3. The resolution pattern — major OEM filing invalidity appeal, then jointly dismissing within four months — is consistent with a confidential licensing or cross-licensing agreement, a dynamic that practitioners should anticipate when advising clients on patent assertion entity (PAE) exposure in the wireless communications space.

Strategic Takeaways

For Patent Attorneys:

• When representing OEM clients against PAEs at the Federal Circuit, preserve all invalidity arguments fully through briefing deadlines to maximize settlement leverage before oral argument is scheduled.
• A Fed. R. App. P. 42(b) voluntary dismissal with symmetric cost-bearing is a clean exit mechanism for settlement — structure licensing negotiations to use this vehicle when both parties want a neutral public record.
• Counsel should advise clients that a dismissed invalidity appeal does not extinguish the patent — third parties retain the right to file their own IPR petitions against US9084291B1 if the claims present ongoing FTO risk.
• Fish & Richardson LLP’s representation of Samsung signals that well-resourced prosecution and appellate counsel can convert even Federal Circuit invalidity appeals into licensing leverage — integrate appellate strategy into prosecution and portfolio counseling from day one.

For IP Professionals:

• In-house IP teams at wireless device manufacturers should treat the survival of US9084291B1 as a live risk asset and conduct a claim mapping exercise against current and roadmap products that implement IP-based wireless networking protocols.
• Monitor Smart Mobile Technologies’ licensing activity and any new litigation filings following this dismissal — a negotiated resolution with Samsung often precedes broader assertion campaigns against second-tier OEMs and component suppliers.

For R&D Teams:

• Engineering teams developing firmware or protocol stacks for IP-based wireless device connectivity should commission an FTO review of US9084291B1’s independent claims before the next product generation enters design freeze.
• Consider design-around strategies at the protocol interface layer — the patent’s focus on how wireless devices interface with IP networks means alternative handshaking or session management architectures may provide meaningful non-infringement positions.