ServStor Technologies v. MediaTek — Dismissed With Prejudice in 145 Days
ServStor Technologies filed suit against semiconductor giant MediaTek in the Eastern District of Texas, asserting four network communication patents against MediaTek’s MT7620 SoC and related networking products. The plaintiff voluntarily dismissed all claims with prejudice after just 145 days — permanently foreclosing re-litigation of the same claims.
Four network-chip patents, one rapid exit: anatomy of a dismissal
On September 19, 2024, ServStor Technologies, LLC filed a patent infringement action against MediaTek, Inc. in the United States District Court for the Eastern District of Texas (Case No. 2:24-cv-00760). ServStor asserted four patents — US7643476B2, US7688814B2, US7742473B2, and US7602773B2 — covering methods and apparatus for communicatively coupling devices to networks. The accused products included MediaTek’s MT7620 system-on-chip, as well as related network switches, routers, and associated software.
The case ended on February 11, 2025, when ServStor filed a Notice of Voluntary Dismissal With Prejudice under Federal Rule of Civil Procedure 41(a)(1)(A)(i). The Eastern District court accepted and acknowledged the notice, dismissing all pending claims and causes of action with prejudice and denying all other pending relief as moot. A dismissal with prejudice is legally conclusive — ServStor cannot refile these specific claims against MediaTek on the same patents in any federal court.
At 145 days from filing to closure, the case resolved well before any substantive merits phase would typically commence in E.D. Texas. No defendant counsel of record was entered in the public docket, which is consistent with early pre-answer settlement discussions or licensing resolution. The absence of a reported damages award or licensing terms means the commercial resolution, if any, remains entirely private. What drove ServStor to accept a permanent bar on re-assertion — whether a licensing arrangement, a freedom-to-operate concession, or a strategic reassessment — cannot be determined from the public record.
Filing to Dismissed with Prejudice in 145 days
145 days — faster than the median E.D. Texas patent case lifecycle
Dismissed with prejudice: what Rule 41 finality means for both parties
Rule 41(a)(1)(A)(i): a one-way door for the plaintiff
Under Fed. R. Civ. P. 41(a)(1)(A)(i), a plaintiff may dismiss an action without a court order by filing a notice before the defendant serves an answer or a motion for summary judgment. When filed ‘with prejudice,’ the dismissal is a final adjudication on the merits — equivalent in legal effect to a judgment against the plaintiff. ServStor’s own notice triggered this permanent bar, requiring no judicial action beyond acknowledgment.
Plaintiff-initiated, court-acknowledgedServStor permanently surrenders these claims against MediaTek
By dismissing with prejudice, ServStor has extinguished its right to reassert US7643476B2, US7688814B2, US7742473B2, and US7602773B2 against MediaTek in any subsequent federal action. This is a materially stronger concession than a without-prejudice dismissal, which would preserve refiling rights. Whether ServStor received commercial consideration — such as a licensing payment or covenant — in exchange is not disclosed in the public record.
Claims permanently extinguishedMediaTek secures permanent immunity on these four patents
MediaTek obtains a final, res judicata bar against ServStor on the four asserted patents, covering the MT7620 and related networking products. Notably, MediaTek’s counsel never appeared on the public docket, suggesting the company resolved its exposure at a very early stage — before formal litigation costs compounded. The with-prejudice nature of the dismissal provides stronger commercial certainty than a settlement that merely stayed proceedings.
Res judicata bar securedWhat early with-prejudice exits signal in E.D. Texas NPE actions
Rapid with-prejudice dismissals in E.D. Texas — particularly where defendant counsel never appears — consistently suggest pre-litigation or very early-stage licensing resolution. For other MediaTek customers and SoC vendors whose products share the MT7620 architecture, ServStor’s portfolio remains in force against third parties. Companies deploying network-coupled SoCs, ASICs, or routers using similar communication architectures should note that the underlying patents were not invalidated and remain enforceable.
Portfolio still active vs. third partiesFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | ServStor Technologies, LLC | Company | Patent assertion entity — holder of US7643476B2 and three related network communication patentsSearch in Eureka ↗ |
| Defendant | Mediatek, Inc. | Company | MediaTek, Inc. — global semiconductor company, designer of MT7620 SoC and networking ICsSearch in Eureka ↗ |
| Plaintiff counsel | Alfred Ross Fabricant | Attorney | Counsel for ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | John Andrew Rubino | Attorney | Counsel for ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Justin Kurt Truelove | Attorney | Counsel for ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Michael Mondelli , III | Attorney | Counsel for ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Peter Lambrianakos | Attorney | Counsel for ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Vincent J. Rubino , III | Attorney | Counsel for ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Fabricant LLP | Law Firm | Representing ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Fabricant LLP (NY) | Law Firm | Representing ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rubino Ip | Law Firm | Representing ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rubino Law LLC | Law Firm | Representing ServStor Technologies, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Truelove Law Firm | Law Firm | Representing ServStor Technologies, LLCSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order is procedural rather than substantive — it accepts and acknowledges ServStor’s Rule 41(a)(1)(A)(i) notice and gives it legal effect. The phrase ‘DISMISSED WITH PREJUDICE’ carries full res judicata weight: ServStor is treated as having lost on the merits for purposes of any future action against MediaTek on these four patents. The denial of all other pending relief ‘as moot’ confirms no injunctive or damages claims survive. No merits findings were made regarding infringement, validity, or claim scope.
US7643476B2 — network-coupled SoC and ASIC communication architecture
The four asserted patents — US7643476B2, US7688814B2, US7742473B2, and US7602773B2 — share a technical lineage in network communication architecture, covering methods and apparatus for communicatively coupling an apparatus to a network using integrated circuits including SoCs and ASICs. The application dates span the mid-2000s (application numbers beginning US10/ and US11/), placing their priority windows in the 2003–2005 era when embedded networking in consumer and enterprise devices was rapidly proliferating. These patents cover core architectural patterns that remain embedded in modern network chipsets.
For the semiconductor networking sector, this patent family represents meaningful assertion risk. The accused product — MediaTek’s MT7620 — is a widely deployed 580 MHz MIPS-based SoC used in routers, IoT gateways, and embedded networking devices from dozens of OEMs. Because the patents cover apparatus-level coupling methods rather than a single implementation detail, any vendor shipping functionally similar SoCs or ASICs for network-connected applications could face analogous exposure. The family’s survival through this litigation — without invalidation proceedings — keeps the risk horizon open for the broader networking IC supply chain.
Should your SoC or ASIC product team run an FTO against US7643476B2?
Any R&D team designing or commercialising network-coupled SoCs, ASICs, routers, or embedded networking modules in the MT7620 product category should treat this patent family as an active FTO priority. ServStor’s willingness to file in E.D. Texas against a defendant of MediaTek’s scale — and the rapid resolution that followed — suggests this portfolio is actively managed and licensed. Products that communicate via integrated network interfaces are squarely within the technical scope suggested by the accused product list.
PatSnap Eureka’s FTO Search Agent can map the claim scope of US7643476B2, US7688814B2, US7742473B2, and US7602773B2 against your product architecture in minutes — identifying whether your SoC’s network coupling methods fall within independent claim language and surfacing prior art that could support an IPR challenge. For procurement teams evaluating MediaTek, Broadcom, or Realtek chipsets, Eureka’s portfolio monitoring alerts will flag any new assertions from ServStor before they reach the docket stage.
Run a freedom-to-operate analysis on US7643476B2 to assess your product’s exposure
Run FTO in Eureka →Similar network SoC patent assertions in E.D. Texas district courts
Cases involving network communication and SoC patent assertions filed in the Eastern District of Texas by NPE plaintiffs against semiconductor defendants.
What this case signals for the semiconductor networking IP landscape
Four asserted patents, no defendant docket entry, 145-day exit: the pattern suggests calculated early resolution in a high-volume assertion strategy.
With-prejudice dismissals do not invalidate the underlying patents
ServStor’s patents — US7643476B2, US7688814B2, US7742473B2, and US7602773B2 — survive this case fully intact and enforceable. Any company making, using, or selling network-coupled SoCs, ASICs, or routers with similar architectures to the MT7620 remains exposed. The dismissal protects only MediaTek, and only on these specific claims.
No defendant appearance suggests resolution before formal engagement
MediaTek’s absence from the public docket as a represented party is a consistent marker of pre-answer resolution. This pattern — seen frequently in E.D. Texas NPE actions — typically signals that the defendant assessed early resolution as commercially preferable to litigation costs, regardless of the underlying merits of the infringement claims.
ServStor v Mediatek — key questions answered
A dismissal with prejudice under Rule 41(a)(1)(A)(i) is a final adjudication on the merits. ServStor Technologies cannot refile its infringement claims against MediaTek based on US7643476B2, US7688814B2, US7742473B2, or US7602773B2 in any federal court. The four patents themselves remain valid and enforceable against all other parties.
No. The case was dismissed before any substantive merits proceedings. The court made no findings on patent validity, claim construction, or infringement. US7643476B2, US7688814B2, US7742473B2, and US7602773B2 remain active and enforceable against third parties not covered by this dismissal.
The public record does not disclose the reason. The absence of defendant counsel on the docket and the speed of resolution — before any substantive filings — is consistent with early pre-answer settlement or licensing resolution. Whether financial consideration changed hands is not publicly disclosed.
ServStor accused MediaTek’s MT7620 system-on-chip, as well as network switches, routers, and associated software. The MT7620 is a widely deployed MIPS-based SoC used in consumer and enterprise routing and IoT gateway products from numerous OEMs globally.
No. The dismissal with prejudice operates only between ServStor and MediaTek on these specific claims. Third-party OEMs, distributors, or end-users incorporating the MT7620 or functionally similar networking SoCs are not covered by this dismissal and remain potentially exposed to assertion from ServStor’s patent portfolio.
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