Data Fence LLC v. AURA SUB, LLC — Inbound Call Control Patent Dispute Dismissed
Data Fence LLC filed a patent infringement action in Massachusetts against AURA SUB, LLC, asserting three patents covering methods and systems for inbound call control. The case was voluntarily dismissed without prejudice under Rule 41(a)(1)(A)(i) just 61 days after filing — before the defendant had answered or moved for summary judgment.
Three call-control patents, 61 days, and a pre-answer exit
On 4 October 2024, Data Fence LLC filed a patent infringement complaint against AURA SUB, LLC in the District of Massachusetts before Judge Indira Talwani. The complaint asserted three patents — US8917843B2, US9491286B2, and US9819797B2 — all directed to methods and systems for inbound call control. Data Fence was represented by Dickinson Wright PLLC; AURA SUB retained DLA Piper US LLP.
On 4 December 2024, Data Fence filed a notice of voluntary dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(i), terminating the action without prejudice. Because AURA SUB had not yet filed an answer or moved for summary judgment, the dismissal was effective as of right — no court order was required and no merits ruling was issued. A without-prejudice dismissal means Data Fence retains the right to refile the same claims in future proceedings.
The 61-day window between filing and dismissal is notably brief and suggests the parties may have reached an early-stage resolution — whether licensing, settlement, or simply a strategic withdrawal — though the public record does not disclose any terms. The pre-answer timing is consistent with leverage-based filings where early dialogue can resolve the dispute before litigation costs escalate for either side.
Filing to Voluntary dismissal in 61 days
61 days — resolved before defendant’s first responsive pleading was filed
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): dismissal as of right, no court involvement
Under Rule 41(a)(1)(A)(i), a plaintiff may dismiss an action without a court order at any time before the defendant serves an answer or a summary judgment motion. Data Fence exercised this right after 61 days. The dismissal is procedural — no merits adjudication occurred, no claim was found valid or invalid, and no infringement determination was made.
Pre-answer voluntary exitWithout prejudice — but what does the public record actually say?
A without-prejudice dismissal preserves Data Fence’s right to refile identical claims in a future action. A with-prejudice dismissal would bar those claims permanently. The filing here specifies ‘without prejudice’, which is significant for AURA SUB’s ongoing exposure. However, the public record does not disclose whether any separate agreement limits or conditions that refiling right — that detail, if it exists, is not publicly available.
Refiling right preservedAURA SUB exits without a merits win — exposure persists
AURA SUB secured no judgment on validity, infringement, or enforceability. Because the dismissal is without prejudice, the three asserted patents remain active and enforceable. AURA SUB cannot claim estoppel or claim preclusion from this case. Companies in comparable positions typically review their FTO posture with respect to the asserted patents and monitor the patentee for future activity.
No estoppel protectionEarly exit signals licensing dialogue or tactical recalibration
Pre-answer dismissals within 60 days of filing are frequently associated with early licensing discussions, demand-letter outcomes, or plaintiff reassessment of venue or claim strength. The involvement of DLA Piper on the defense side suggests AURA SUB was prepared to litigate. Whether a licence was executed or Data Fence simply withdrew strategically, the three patents remain live assets that could be asserted against other inbound call control providers.
Patents remain enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Data Fence LLC | Company | Patent assertion entity — holder of US8917843B2, US9491286B2, US9819797B2Search in Eureka ↗ |
| Defendant | AURA SUB, LLC | Company | AURA SUB, LLC — subsidiary entity, likely operating in communications or call managementSearch in Eureka ↗ |
| Plaintiff counsel | Christopher E. Hanba | Attorney | Counsel for Data Fence LLCSearch in Eureka ↗ |
| Plaintiff law firm | Dickinson Wright PLLC | Law Firm | Representing Data Fence LLCSearch in Eureka ↗ |
| Defendant counsel | Nancy Braman | Attorney | Counsel for AURA SUB, LLCSearch in Eureka ↗ |
| Defendant counsel | Safraz W. Ishmael | Attorney | Counsel for AURA SUB, LLCSearch in Eureka ↗ |
| Defendant law firm | DLA Piper US LLP | Law Firm | Representing AURA SUB, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Indira Talwani | Judge | Massachusetts District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) precisely, confirming AURA SUB had not answered and no summary judgment motion was pending — giving Data Fence an unconditional right to exit. The without-prejudice designation is the operative legal fact: no claim is extinguished, no patent is invalidated, and no infringement finding binds either party. The phrasing leaves the door open for future proceedings and provides AURA SUB with no preclusive shield.
US8917843B2, US9491286B2 & US9819797B2 — Inbound Call Control Systems
The three asserted patents — US8917843B2, US9491286B2, and US9819797B2 — share a common technical focus on methods and systems for controlling inbound calls. Filed under application numbers US14/038396, US14/552267, and US15/337811 respectively, the sequential application numbers suggest a continuation family, with each subsequent patent potentially broadening or refining claim scope around the core inbound call control architecture. The technology domain covers the routing, management, and control logic that underpins inbound telephony systems.
This patent family sits at the intersection of cloud communications, VoIP infrastructure, and enterprise call management — a commercially active space with numerous large incumbents and SaaS entrants. A three-patent portfolio with staggered grant dates extends the effective assertion window and complicates prior art challenges. Any company building or operating inbound call routing, IVR, auto-attendant, or cloud PBX functionality should assess whether their implementation overlaps with the claim scope of this family, particularly given the without-prejudice dismissal leaves enforcement risk intact.
Should you run an FTO against US8917843B2, US9491286B2 & US9819797B2?
If your product or platform touches inbound call control — including call routing, IVR, cloud PBX, auto-attendant, or inbound telephony management — this three-patent family warrants an FTO review. The without-prejudice dismissal in this case means Data Fence has not abandoned these rights. AURA SUB is not the only company exposed; any operator in the space faces the same structural risk. Given the continuation architecture, claim scope may be broader than the lead patent alone suggests.
PatSnap Eureka’s FTO Search Agent allows R&D and IP teams to map all three patent numbers against your product feature set simultaneously, identify overlapping claim elements, and surface relevant prior art that may support design-around or invalidity arguments. Monitoring alerts for Data Fence LLC activity will provide early warning of refiling or new assertion targets — critical intelligence in a space where pre-answer settlements are common and timelines are short.
Run a freedom-to-operate analysis on US8917843B2 to assess your product’s exposure
Run FTO in Eureka →Similar inbound call control patent cases in US District Courts
Cases involving inbound call control and telephony routing patents in Massachusetts and other US district courts, with comparable voluntary dismissal or pre-answer resolution patterns.
What this case signals for the inbound call control IP landscape
A three-patent assertion resolved in 61 days carries lessons for any company operating in the call management and telecommunications routing space.
Pre-answer dismissals don’t neutralise patent risk — monitor closely
A Rule 41(a)(1)(A)(i) dismissal without prejudice leaves all three patents fully enforceable. Companies offering inbound call control, IVR, or telephony routing products should treat this case as an early signal — not a cleared threat. Data Fence retains the right to refile, and the patents have not been challenged on validity.
Speed of resolution suggests early engagement may contain cost
Both parties resolved this in 61 days before any substantive pleading was filed. For defendants in similar assertion campaigns, early engagement through counsel — as AURA SUB demonstrated with DLA Piper — can accelerate resolution before discovery and claim construction costs accrue. Having a prepared response posture matters from day one.
Data v AURA — key questions answered
Data Fence LLC filed a patent infringement action against AURA SUB, LLC in the District of Massachusetts on 4 October 2024, asserting three inbound call control patents. The case was voluntarily dismissed without prejudice on 4 December 2024 under Rule 41(a)(1)(A)(i), 61 days after filing, before AURA SUB had answered the complaint.
Data Fence asserted US8917843B2 (App. No. US14/038396), US9491286B2 (App. No. US14/552267), and US9819797B2 (App. No. US15/337811). All three patents are directed to methods and systems for inbound call control and appear to form a continuation family based on their sequential application numbers.
A without-prejudice dismissal means Data Fence retains the right to refile identical claims against AURA SUB in a future action. No merits ruling was issued — there is no finding of non-infringement, invalidity, or unenforceability. AURA SUB cannot invoke claim preclusion or estoppel from this case. The three patents remain active and enforceable.
The public record does not disclose the reason for the early dismissal. A 61-day window before the defendant answered is consistent with several scenarios: early-stage licensing or settlement discussions, a strategic reassessment of venue or claim strength, or a demand-letter outcome. The involvement of DLA Piper for the defense suggests AURA SUB was positioned to contest the action.
Yes. Because the dismissal was without prejudice under Rule 41(a)(1)(A)(i), Data Fence is not barred from asserting the same patents against AURA SUB in a new action, subject to applicable statutes of limitations and any private agreement between the parties that the public record does not reveal. Note that a second voluntary dismissal of the same claims could trigger a with-prejudice bar under Rule 41(a)(1)(B).
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