Uniloc v. Avaya: Five-Patent Multimedia Messaging Suit Dismissed With Prejudice
Uniloc USA and Uniloc Luxembourg sued Avaya in the Eastern District of Texas, asserting five patents covering multimedia messaging and communications platform technology. After nearly eight years on the docket, the parties jointly stipulated to dismissal with prejudice under FRCP 41(a)(1)(A)(ii), with each side bearing its own costs.
Eight-year multimedia messaging IP dispute ends in joint dismissal
Uniloc USA, Inc. and Uniloc Luxembourg, S.A. filed case 2:16-cv-00777 against Avaya, Inc. in the Eastern District of Texas on 15 July 2016, before Chief Judge Rodney Gilstrap. The complaint asserted five United States patents — US8199747B2, US8243723B2, US8724622B2, US8995433B2, and US7535890B2 — directed at multimedia messaging and unified communications platform technology. Avaya’s accused products included its apps and multimedia messaging platform offerings.
The case closed on 13 February 2024 when Uniloc and Avaya filed a Joint Stipulation of Voluntary Dismissal with Prejudice pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(ii). The court acknowledged and accepted the stipulation, formally dismissing all claims with prejudice and directing the Clerk to close both the member case and the lead case. The with-prejudice designation means Uniloc is permanently barred from reasserting these specific claims against Avaya. Each party was ordered to bear its own costs and attorneys’ fees, leaving no financial judgment on the record.
The approximately eight-year duration of this case is notably long even by the standards of complex multi-patent litigation, suggesting the parties navigated substantial procedural history — potentially including inter partes review proceedings, claim construction, and discovery disputes — before reaching resolution. The absence of a cost award and the joint nature of the stipulation are consistent with a negotiated resolution, though the public record does not disclose any settlement terms. What drove the parties to dismissal rather than a trial verdict remains undisclosed.
Filing to filing in 0 days
Days on docket before dismissal — E.D. Texas median for comparable patent suits is ~730 days
Full party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Uniloc USA, Inc. | Company | Patent licensing entity — holder of US8199747B2 and four further messaging patentsSearch in Eureka ↗ |
| Defendant | Avaya, Inc. | Company | Avaya, Inc. — enterprise communications and unified messaging platform providerSearch in Eureka ↗ |
| Plaintiff counsel | Paul J. Hayes | Attorney | Counsel for Uniloc USA, Inc.Search in Eureka ↗ |
| Defendant counsel | Amr O. Aly | Attorney | Counsel for Avaya, Inc.Search in Eureka ↗ |
| Defendant counsel | Gregory J. Apgar | Attorney | Counsel for Avaya, Inc.Search in Eureka ↗ |
| Defendant counsel | Michael E. Jones | Attorney | Counsel for Avaya, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Rodney Gilstrap | Chief Judge | Texas Eastern District Court — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The stipulation invokes FRCP 41(a)(1)(A)(ii), meaning dismissal was fully consensual and carries no findings on infringement, validity, or damages. The with-prejudice designation is the operative legal consequence: it functions as a final judgment on the merits for res judicata purposes, permanently barring Uniloc from reasserting these claims against Avaya. The mutual cost-bearing order leaves no financial record and is consistent with a privately negotiated resolution whose terms, if any, remain confidential.
US8199747B2 and four further patents — multimedia messaging systems
The five asserted patents — US8199747B2, US8243723B2, US8724622B2, US8995433B2, and US7535890B2 — cover a range of multimedia messaging and unified communications technologies. Application filings span from US10/740030 (an earlier priority chain) through US14/224125, reflecting a portfolio built across successive continuation and continuation-in-part filings. The patents sit within the technical domain of network-based messaging session management, addressing how communications platforms route, deliver, and manage multimedia message streams across enterprise and consumer environments.
This portfolio is strategically significant because its claims are potentially broad enough to reach modern unified communications platforms, CPaaS providers, and enterprise messaging middleware. Uniloc’s litigation history demonstrates a willingness to assert these patents against major communications vendors, making them a material risk factor for any company offering SIP-based messaging, WebRTC sessions, or integrated multimedia messaging APIs. The survival of these patents post-dismissal — with no invalidity finding on record — means they remain fully assertable against other parties in the sector.
Should your product team run an FTO against these five Uniloc patents?
If your company develops or sells unified communications software, enterprise messaging platforms, CPaaS infrastructure, or multimedia messaging APIs, these five patents warrant active monitoring. The Avaya dismissal with prejudice protects only Avaya — it creates no estoppel or invalidity finding that benefits third parties. Product teams launching or iterating on messaging session management features, multimedia delivery pipelines, or routing logic should assess claim overlap before market entry or feature launch.
PatSnap Eureka’s FTO Search Agent can map the independent claims of all five patents against your product architecture, flag overlap risks, and surface relevant prior art that could support design-around or IPR strategies. Eureka’s claim monitoring tools also alert your team if continuation patents in this family publish with narrowed or broadened claims — a common Uniloc tactic. Running a structured FTO now is materially cheaper than reactive litigation defence later.
Run a freedom-to-operate analysis on US8199747B2 to assess your product’s exposure
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What this case signals for the unified communications IP landscape
A with-prejudice dismissal after eight years on the E.D. Texas docket carries distinct implications for how messaging patent risk is managed.
With-prejudice dismissal protects Avaya but leaves patents in force
Avaya is permanently shielded from these specific claims, but the five Uniloc patents remain valid and enforceable against other defendants. Any enterprise communications vendor with products overlapping Avaya’s multimedia messaging platform should treat this dismissal as competitor-specific, not sector-wide clearance. Independent FTO analysis on these five patents remains warranted.
Eight-year duration signals high procedural complexity — plan accordingly
Litigation of this length typically involves IPR proceedings, claim construction battles, and multiple summary judgment motions before resolution. Companies facing Uniloc-pattern assertions on messaging technology should anticipate multi-year timelines and budget accordingly. Early IPR filings against the asserted patents remain a primary defensive lever worth evaluating promptly.
Uniloc v Avaya — key questions answered
The case was dismissed with prejudice. Uniloc USA, Inc. and Uniloc Luxembourg, S.A. jointly stipulated with Avaya to dismissal with prejudice under FRCP 41(a)(1)(A)(ii). The court acknowledged and accepted the stipulation on 13 February 2024. Each party bears its own costs and attorneys’ fees.
Uniloc asserted five U.S. patents: US8199747B2, US8243723B2, US8724622B2, US8995433B2, and US7535890B2. All five are directed at multimedia messaging and unified communications platform technology. Avaya’s accused products included its apps and multimedia messaging platform.
A dismissal with prejudice functions as a final judgment on the merits for res judicata purposes. Uniloc cannot refile these same infringement claims against Avaya on the five asserted patents. Avaya is permanently protected from re-suit on these specific claims, though the patents remain valid and enforceable against other defendants.
The public record does not disclose the specific procedural reasons for the lengthy duration. Cases of this type in E.D. Texas commonly involve IPR proceedings at the USPTO, claim construction disputes, and discovery motions that can extend timelines significantly. The joint nature of the dismissal suggests the parties reached a negotiated resolution, though any private settlement terms are not reflected in the court record.
Yes. The dismissal with prejudice resolves only the claims between Uniloc and Avaya. No invalidity or unenforceability finding was made by the court. All five patents — US8199747B2, US8243723B2, US8724622B2, US8995433B2, and US7535890B2 — remain in force and can be asserted against other parties in the communications and messaging technology sector.
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