PacSec3 vs. Lumen Technologies: Stipulated Dismissal in Network Security Patent Dispute
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📋 Résumé de l'affaire
| Nom de l'affaire | PacSec3, LLC v. Lumen Technologies, Inc. |
| Numéro de dossier | 2:25-cv-00668 (E.D. Tex.) |
| Tribunal | District Est du Texas |
| Durée | June 30, 2025 – March 2, 2026 245 days |
| Résultat | Stipulated Dismissal — No Damages |
| Brevets en cause | |
| Produits incriminés | Lumen’s packet flooding defense system |
Aperçu du dossier
Les parties
⚖️ Demandeur
Non-practicing entity (NPE) asserting intellectual property rights related to cybersecurity and network defense technologies.
🛡️ Défendeur
Major U.S. telecommunications and managed services provider offering enterprise networking, cloud connectivity, and cybersecurity solutions globally.
Brevets en cause
This landmark case centered on **US Patent No. 7,523,497 B2**, covering a packet flooding defense system — a cybersecurity technology with direct relevance to telecommunications infrastructure. The patent protects systems and methods for defending against **packet flooding attacks**.
- • US7,523,497 B2 — Packet flooding defense system
Developing Network Security Solutions?
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Le verdict et l'analyse juridique
Résultat
On March 2, 2026, Chief Judge Gilstrap accepted and acknowledged the Joint Stipulation of Dismissal (Dkt. No. 23), ordering: All of PacSec3’s claims dismissed with prejudice (meaning they cannot be re-filed) and all of Lumen’s counterclaims dismissed without prejudice (meaning Lumen retains the right to reassert them). No damages award was entered, and no injunctive relief was granted. The case terminated entirely on stipulated terms.
Principales questions juridiques
The dismissal with prejudice of plaintiff’s claims is the dispositive legal event here. Under Federal Rule of Civil Procedure 41, a voluntary dismissal with prejudice constitutes an adjudication on the merits — PacSec3 cannot reassert the same infringement claims against Lumen based on US7,523,497 B2 arising from this dispute period.
The asymmetric dismissal structure — plaintiff’s claims with prejudice, defendant’s counterclaims without prejudice — is tactically significant. Lumen preserved its counterclaims (likely including invalidity challenges and/or non-infringement declarations) without conceding them. The absence of fee-shifting suggests neither party sought nor obtained 35 U.S.C. § 285 “exceptional case” sanctions.
Freedom to Operate (FTO) Analysis in Network Security
Ce cas met en évidence les risques majeurs liés à la propriété intellectuelle dans le domaine de la sécurité des réseaux. Choisissez la prochaine étape :
📋 Comprendre l'impact de cette affaire
Learn about the specific risks and implications from this network security litigation.
- View all related patents in this network defense space
- Découvrez quelles entreprises sont les plus actives dans le domaine des brevets liés à la sécurité des réseaux.
- Understand claim construction patterns for packet flooding defense
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Zone à haut risque
Packet flooding defense systems (DDoS mitigation)
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✅ Points clés à retenir
Joint stipulations with asymmetric prejudice terms (plaintiff with prejudice / defendant without) are powerful negotiating outcomes in NPE defense.
Rechercher la jurisprudence connexe →The Eastern District of Texas remains a preferred NPE venue; Judge Gilstrap’s docket management encourages early resolution.
Explorer les précédents →Foire aux questions
The case involved US Patent No. 7,523,497 B2 (Application No. US10/841,064), covering a packet flooding defense system — a network security technology relevant to DDoS attack mitigation.
The parties filed a Joint Stipulation of Dismissal under FRCP Rule 41. Dismissal with prejudice was agreed upon by both parties, permanently barring PacSec3 from re-asserting these claims against Lumen on this patent.
It reinforces that early, structured negotiation in E.D. Texas can efficiently resolve NPE assertions. Companies deploying packet flooding defense technologies should conduct FTO analysis against this patent family.
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Références
- United States District Court for the Eastern District of Texas — Case 2:25-cv-00668
- Google Patents — US7,523,497 B2
- Institut d'information juridique de Cornell — Règle fédérale de procédure civile n° 41
- Institut d'information juridique de Cornell — 35 U.S.C. § 285
- PatSnap — IP Intelligence Solutions for Network Security
Cet article est publié à titre purement informatif et ne constitue en aucun cas un avis juridique. Toutes les informations relatives aux affaires sont tirées de dossiers judiciaires accessibles au public. Pour en savoir plus sur les fonctionnalités de la plateforme, rendez-vous sur PatSnap.