Calibrate Networks v. BlackBerry: Voluntary Dismissal With Prejudice After 127 Days
Calibrate Networks LLC asserted US9584633B2 — a patent covering methods and systems for managing network communications — against BlackBerry Ltd. in the Eastern District of Texas. Before BlackBerry filed an answer or moved for summary judgment, Calibrate dismissed the case with prejudice under Rule 41(a)(1)(A)(i), surrendering its right to re-litigate this claim.
Early voluntary exit: Calibrate drops BlackBerry suit with no return path
Filed on 24 April 2025 before Judge Rodney Gilstrap in the Eastern District of Texas, Calibrate Networks LLC brought an infringement action against BlackBerry Ltd. asserting US9584633B2, which covers methods and systems for managing network communications. Eastern Texas — and the Gilstrap docket in particular — remains a preferred venue for NPE-style infringement suits, making the filing itself consistent with standard patent assertion playbook.
The case closed on 29 August 2025 when Calibrate filed a Notice of Voluntary Dismissal with Prejudice under Federal Rule of Civil Procedure 41(a)(1)(A)(i). Because BlackBerry had not yet answered the complaint nor moved for summary judgment, Calibrate was entitled to dismiss as of right. Judge Gilstrap acknowledged and accepted the dismissal, denied all pending relief as moot, and ordered each party to bear its own costs — meaning no fee-shifting toward either side.
The 127-day duration and the pre-answer timing of the dismissal are notable. Dismissal with prejudice — rather than without — is a stronger concession than the procedural minimum required, and may suggest a negotiated resolution, a licensing agreement, or a strategic decision to exit following early case assessment. The public record is silent on any underlying commercial terms, and no settlement is confirmed from the docket alone.
Filing to Voluntary dismissal in 127 days
127 days — resolved before defendant answered, suggesting early strategic withdrawal
Dismissed with prejudice: what this outcome means for both parties
Rule 41(a)(1)(A)(i): plaintiff’s right to dismiss before answer
Under FRCP 41(a)(1)(A)(i), a plaintiff may dismiss an action as of right — without court approval — before the defendant has served an answer or a motion for summary judgment. Calibrate exercised this right, but chose to dismiss ‘with prejudice’, which goes beyond the procedural default. A with-prejudice dismissal under Rule 41 carries full res judicata effect: the same claims against BlackBerry on this patent cannot be re-filed.
Voluntary, with prejudiceCalibrate forfeits the right to re-assert this claim against BlackBerry
By dismissing with prejudice, Calibrate Networks permanently extinguished its infringement claims against BlackBerry on US9584633B2. This is a materially stronger concession than a without-prejudice dismissal, which would preserve the option to re-file. The with-prejudice election may reflect a settled dispute, a concluded licensing negotiation, or a decision that the claim lacked sufficient merit to pursue after early case review. No damages or royalties are confirmed on the public docket.
Claims permanently extinguishedBlackBerry exits without admitting infringement — and without paying costs
BlackBerry Ltd. achieved a clean exit: no answer was filed, no merits ruling was made, and the court ordered each party to bear its own costs. BlackBerry incurs no public liability and faces no estoppel on invalidity or non-infringement arguments for other contexts. The own-costs order is consistent with pre-answer dismissals and suggests the court saw no basis — nor was asked — to treat this as an exceptional case warranting fee-shifting under 35 U.S.C. § 285.
No liability, no cost orderWith-prejudice dismissal signals risk calculus shifted before discovery began
Pre-answer dismissals with prejudice in E.D. Texas NPE cases often suggest one of three outcomes: a licensing agreement was reached, the asserting party received an adverse claim-construction signal in early correspondence, or the economics of litigation no longer supported proceeding. For companies receiving demand letters citing US9584633B2 and network communications management technology, the resolution neither validates nor invalidates the patent — it simply closes this particular enforcement vector against BlackBerry.
Enforcement vector closedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Calibrate Networks LLC | Company | Patent assertion entity — holder of US9584633B2 covering network communications managementSearch in Eureka ↗ |
| Defendant | Blackberry, Ltd. | Company | BlackBerry Ltd. — global enterprise software and security technology companySearch in Eureka ↗ |
| Plaintiff counsel | Benjamin Charles Deming | Attorney | Counsel for Calibrate Networks LLCSearch in Eureka ↗ |
| Plaintiff counsel | Isaac Phillip Rabicoff | Attorney | Counsel for Calibrate Networks LLCSearch in Eureka ↗ |
| Plaintiff law firm | Dnl Zito | Law Firm | Representing Calibrate Networks LLCSearch in Eureka ↗ |
| Plaintiff law firm | Rabicoff Law LLC | Law Firm | Representing Calibrate Networks LLCSearch in Eureka ↗ |
| Defendant counsel | Kurt Max Pankratz | Attorney | Counsel for Blackberry, Ltd.Search in Eureka ↗ |
| Defendant law firm | Baker Botts LLP | Law Firm | Representing Blackberry, Ltd.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Judge | Texas Eastern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order is procedural rather than substantive: Judge Gilstrap acknowledged Calibrate’s Rule 41(a)(1)(A)(i) notice, confirmed BlackBerry had not answered or moved for summary judgment, and accepted the with-prejudice dismissal as of right. The denial of all pending relief as moot and the own-costs order confirm no merits adjudication occurred. The with-prejudice character of the dismissal is the legally operative term — it confers full res judicata protection on BlackBerry with respect to these claims on US9584633B2.
US9584633B2 — Method and system for managing network communications
US9584633B2 (application number US14/211928) claims methods and systems for managing network communications — a broad technical domain covering how data traffic is directed, controlled, or optimised across networked environments. Patents in this space typically encompass session handling, traffic prioritisation, routing logic, or communication protocol management. The application date establishes the patent within a generation of network software development predating modern cloud-native architectures, potentially giving it broad claim coverage across legacy and contemporary implementations.
Network communications management patents carry significant strategic weight because the underlying functions — traffic routing, session control, connection management — are foundational to virtually every enterprise software product, communications platform, and IoT system. BlackBerry’s enterprise security and unified endpoint management products are plausible targets for such claims. For competitors and adjacent players, the continued validity of US9584633B2 post-dismissal means the patent remains a live enforcement asset in Calibrate’s portfolio.
Should you run an FTO against US9584633B2?
Any company developing or deploying network communications management software — including enterprise messaging platforms, SD-WAN solutions, IoT connectivity layers, and unified communications products — should assess their exposure to US9584633B2. The BlackBerry dismissal confirms the patent is being actively asserted and that enforcement campaigns can resolve quickly, potentially before public invalidity arguments are ever raised. R&D and product teams shipping features that manage, route, or prioritise network sessions face the highest exposure.
PatSnap Eureka’s FTO Search Agent can map the claim scope of US9584633B2 against your product architecture, surface relevant prior art in packet management and session control, and flag any related continuation or family patents held by Calibrate Networks. Running a structured FTO now — before any demand letter arrives — is materially cheaper than responding under litigation timelines. Eureka’s claim-chart and prior-art tools are purpose-built for exactly this type of pre-enforcement risk assessment.
Run a freedom-to-operate analysis on US9584633B2 to assess your product’s exposure
Run FTO in Eureka →Similar network communications patent cases in E.D. Texas
Explore comparable network communications management patent assertions before Judge Gilstrap and the Eastern District of Texas, including NPE enforcement patterns and pre-answer dismissals.
What this case signals for the network communications IP landscape
A pre-answer dismissal with prejudice in E.D. Texas rarely tells the full story — but the pattern is commercially significant.
Pre-answer exits in E.D. Texas often mask licensing resolutions
When a plaintiff dismisses with prejudice before the defendant answers, the most common explanation in the NPE litigation pattern is a licensing agreement or demand letter settlement. The with-prejudice election here — stronger than required — suggests Calibrate received something of value or made a deliberate strategic choice to close the file permanently. Companies in the network communications space should assess whether a broader licensing campaign is underway.
US9584633B2 remains active — enforcement risk persists for other defendants
This dismissal extinguishes claims only against BlackBerry. US9584633B2 has not been invalidated, and Calibrate Networks retains full enforcement rights against any other party. Network software vendors, enterprise communications platforms, and IoT connectivity providers whose products involve network traffic management or routing should evaluate their exposure to this patent independently of the BlackBerry outcome.
Calibrate v Blackberry — key questions answered
Dismissal with prejudice means Calibrate Networks permanently relinquished its infringement claims against BlackBerry under US9584633B2. Under res judicata principles, Calibrate cannot re-file the same claims against BlackBerry in any court. BlackBerry received no merits ruling in its favour — the patent itself was not invalidated — but the specific enforcement action is permanently closed.
The public docket does not confirm a settlement. The case was closed via a voluntary dismissal with prejudice under FRCP 41(a)(1)(A)(i), which requires no court-filed settlement agreement. The with-prejudice election and pre-answer timing are consistent with a negotiated resolution or licensing agreement, but this cannot be confirmed from public records alone.
Yes. The dismissal applies only to claims against BlackBerry. US9584633B2 was not invalidated, cancelled, or challenged in an IPR proceeding. Calibrate Networks retains full rights to assert the patent against other parties. Companies in the network communications software sector should treat the patent as an active enforcement risk.
The court ordered each party to bear its own costs, consistent with the default rule under FRCP 54(d) and 35 U.S.C. § 285. Fee-shifting under § 285 requires a finding that the case is ‘exceptional’, typically demonstrated through litigation misconduct or clearly weak claims adjudicated on the merits. Because the case was dismissed before any merits proceedings, no basis for an exceptional case finding existed.
Judge Rodney Gilstrap in the Eastern District of Texas presides over one of the highest-volume patent dockets in the United States and is frequently chosen by NPEs and patent assertion entities for infringement suits. The district’s established patent procedures, experienced judiciary, and historical plaintiff-friendly reputation make it a strategically attractive venue. Filing there is consistent with an assertion-focused enforcement strategy for US9584633B2.
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