Meetrix IP v. Zoho Corp. — Federal Circuit Appeal Voluntarily Dismissed
Meetrix IP, LLC pursued a Federal Circuit appeal against Zoho Corp. over US9843612B2, a patent covering voice conference calls bridging PSTN and internet networks. The parties agreed to dismiss the proceeding under Fed. R. App. P. 42(b) after just 101 days, with each side absorbing its own costs — leaving the underlying patentability dispute unresolved on the merits.
A swift appellate exit: Meetrix and Zoho agree to walk away
Filed on 20 September 2024 at the Court of Appeals for the Federal Circuit, Case No. 24-2344 pitted Meetrix IP, LLC against Zoho Corp. and its affiliate ZOHO CORP. PVT., LTD. The appeal concerned patentability — specifically an invalidity or cancellation action — relating to US9843612B2, which protects methods and systems for conducting voice conference calls that integrate the public switched telephone network (PSTN) with internet-based communications.
The proceeding closed on 30 December 2024 when the parties jointly agreed to dismiss the appeal under Federal Rule of Appellate Procedure 42(b). The court ordered dismissal on those agreed terms, with each side bearing its own costs. Critically, the Federal Circuit issued no ruling on the merits of the patentability challenge, meaning the validity of US9843612B2 was neither confirmed nor overturned at this appellate stage.
The 101-day lifespan of the appeal is notably short for Federal Circuit proceedings and suggests the parties reached a resolution — or a strategic decision to stand down — well before substantive briefing concluded. Whether this reflects a confidential settlement, a licensing arrangement, or a unilateral decision to abandon the appeal is not discernible from the public record. The underlying patentability question therefore remains open to future challenge through other proceedings.
Filing to Voluntary dismissal in 101 days
101 days — resolved faster than most Federal Circuit appeals, which typically run 18–24 months
Appeal voluntarily dismissed: what the agreed exit means for both parties
Fed. R. App. P. 42(b): a consensual appellate exit
Rule 42(b) allows parties to dismiss a Federal Circuit appeal by agreement without the court ruling on the merits. The dismissal here was ordered on the parties’ joint motion, meaning neither side secured a judicial determination on patentability. This is procedurally distinct from a merits affirmance or reversal — the underlying patent’s validity status is unchanged by this order.
No merits adjudicationWith or without prejudice? The public record is silent
The basis of termination is recorded as ‘Voluntary dismissal’ without specifying whether it is with or without prejudice. These carry meaningfully different consequences: dismissal with prejudice bars re-filing the same claim, while dismissal without prejudice preserves the right to re-challenge. The court order does not clarify this distinction, so the preclusive effect — if any — of this dismissal cannot be determined from publicly available filings.
Preclusive effect unclearMeetrix exits without a Federal Circuit ruling in its favour
As appellant, Meetrix IP sought to have the Federal Circuit rule on the patentability issue — likely to reverse an adverse lower-level determination. By agreeing to dismiss, Meetrix foregoes that opportunity at this stage. The patent US9843612B2 remains in its portfolio, but whether it has been strengthened, licensed, or quietly shelved cannot be confirmed from the public record.
Appeal abandonedZoho avoids an appellate ruling but faces ongoing uncertainty
Zoho Corp. and its affiliate avoid a Federal Circuit decision that could have reinstated or invalidated the contested patent claims. The cost-neutrality order means neither party gained a financial concession from the dismissal. If the dismissal is without prejudice, Zoho remains exposed to renewed challenge or assertion of US9843612B2 in future proceedings — particularly relevant for its conferencing and unified communications product lines.
No definitive clearanceFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Meetrix IP, LLC | Company | Patent assertion entity — holder of US9843612B2 covering VoIP/PSTN conferencing technologySearch in Eureka ↗ |
| Defendant | Zoho Corp. | Company | Zoho Corp. and Zoho Corp. Pvt. Ltd. — global SaaS and communications software providerSearch in Eureka ↗ |
| Co-Defendant | ZOHO CORP. PVT., LTD. | Company | Search in Eureka ↗ |
| Plaintiff counsel | Andrew DiNovo | Attorney | Counsel for Meetrix IP, LLCSearch in Eureka ↗ |
| Plaintiff law firm | DiNovo Price LLP | Law Firm | Representing Meetrix IP, LLCSearch in Eureka ↗ |
| Defendant counsel | Hector Julian Ribera, N/a | Attorney | Counsel for Zoho Corp.Search in Eureka ↗ |
| Defendant law firm | Marton Ribera Schumann & Chang LLP | Law Firm | Representing Zoho Corp.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Appeals for the Federal CircuitSearch in Eureka ↗ |
Official order — verbatim text
The order’s language — ‘The parties having so agreed’ — confirms this was a consensual dismissal under Fed. R. App. P. 42(b), not a court-initiated termination. No substantive analysis of the patentability grounds was conducted or published. The cost-neutrality clause (‘each side shall bear their own costs’) suggests neither party extracted a financial concession as a condition of withdrawal, though any underlying commercial terms remain confidential.
US9843612B2 — Voice Conference Call via PSTN and Internet Networks
US9843612B2 (application US14/984709) protects systems and methods for conducting voice conference calls that integrate the traditional public switched telephone network (PSTN) with internet-based communication pathways. This class of technology sits at the intersection of legacy telephony infrastructure and modern VoIP/web conferencing architectures — a commercially significant bridge as enterprises transitioned from circuit-switched to packet-switched communications. The patent’s granted claims define specific technical arrangements for enabling such hybrid conferencing.
The strategic value of this patent lies in its potential coverage of widely deployed conferencing features — including dial-in telephony bridges embedded in otherwise internet-native platforms. SaaS vendors, UCaaS providers, and enterprise communications platforms that offer PSTN dial-in as part of their conferencing stack are the most directly exposed. Meetrix’s willingness to pursue an appeal at the Federal Circuit level suggests the patent is being actively managed as an enforcement asset, not merely held defensively.
Should you run an FTO analysis against US9843612B2?
Any product team building or maintaining a conferencing platform that includes PSTN dial-in functionality alongside internet-based audio or video conferencing should treat US9843612B2 as a priority FTO target. The patent’s claims — covering the hybrid PSTN/internet conferencing architecture — are directly relevant to UCaaS platforms, collaboration tools with dial-in bridges, and communications APIs that route calls across both network types. The absence of a merits ruling in this case means the patent’s validity has not been judicially tested at the Federal Circuit level.
PatSnap Eureka’s FTO Search Agent can map the claim landscape of US9843612B2 against your product’s technical architecture, identify prior art that was not considered during prosecution, and surface related patents in Meetrix’s portfolio that may represent additional assertion risk. For R&D and legal teams in the VoIP or UCaaS space, a current FTO assessment is the fastest way to quantify exposure before any enforcement action is filed.
Run a freedom-to-operate analysis on US9843612B2 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit appeals in VoIP and conferencing patent disputes
Federal Circuit cases involving PSTN/internet conferencing patents and voluntary dismissals — benchmarked against Meetrix IP v. Zoho Corp., Case No. 24-2344.
What this case signals for the VoIP and conferencing IP landscape
A swift voluntary dismissal at the Federal Circuit level rarely signals closure — it often marks a strategic inflection point in a longer dispute.
Voluntary dismissals at the Federal Circuit frequently precede licensing deals
When both parties agree to drop a Federal Circuit appeal within 101 days — well before merits briefing typically completes — it is consistent with a negotiated resolution occurring in parallel. Companies active in the VoIP and unified communications space should monitor whether a licensing programme around US9843612B2 emerges post-dismissal.
The patentability question remains live — re-challenge risk persists
Because no court ruled on the validity of US9843612B2, it retains its presumption of validity. Any competitor or product team in the PSTN/internet conferencing space that relied on this appeal to invalidate the patent must now consider alternative strategies — including IPR petitions or ex parte reexamination — if freedom to operate is a concern.
Meetrix v Zoho — key questions answered
The Federal Circuit appeal in Case No. 24-2344 was voluntarily dismissed by agreement of the parties under Fed. R. App. P. 42(b) on 30 December 2024. No merits ruling was issued. The case concerned a patentability challenge to US9843612B2, which covers voice conference calls using PSTN and internet networks. Each side was ordered to bear its own costs.
US9843612B2 protects systems and methods for conducting voice conference calls that bridge the public switched telephone network (PSTN) with internet-based communication paths. This is commercially significant because it potentially covers PSTN dial-in functionality embedded in internet-native conferencing and UCaaS platforms — a feature widely deployed across enterprise communications products.
No. Because the Federal Circuit dismissed the appeal on agreed terms under Rule 42(b) without ruling on the merits, the validity of US9843612B2 was neither confirmed nor overturned. The patent retains its statutory presumption of validity. Future patentability challenges — via IPR, ex parte reexamination, or district court invalidity defences — remain available.
Fed. R. App. P. 42(b) allows parties to dismiss an appeal by agreement, and the court ordered dismissal on those terms here. The public record does not specify whether the dismissal is with or without prejudice. A with-prejudice dismissal would bar re-filing the same appellate claim; a without-prejudice dismissal would not. The preclusive effect of this specific dismissal cannot be determined from publicly available materials.
Yes — particularly any platform offering PSTN dial-in alongside internet-based conferencing. The lack of a Federal Circuit merits ruling leaves the patent’s claim scope and validity unresolved. Meetrix’s active appellate pursuit of the patent suggests ongoing enforcement intent. An FTO analysis mapping product architecture against the patent’s granted claims is advisable before further product development or commercial expansion in this space.
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