Viavi Solutions v. Platinum Optics Technology — Consent Judgment After 998 Days
Viavi Solutions asserted four optical filter and sensor system patents against Taiwan-based Platinum Optics Technology in California's Northern District. The case resolved via Consent Judgment after nearly three years of litigation, with Viavi's infringement claims dismissed with prejudice and PTOT's counterclaims dismissed without prejudice.
Four optical filter patents at stake in a nearly three-year dispute
Viavi Solutions, Inc., a global optical technology company, filed suit on August 7, 2020 against Platinum Optics Technology, Inc. (PTOT) in the U.S. District Court for the Northern District of California. Viavi alleged infringement of four patents — US9945995B2, US10222526B2, US9354369B2, and US9588269B2 — all directed to optical filter and sensor system technologies. PTOT, a Taiwan-based optical components manufacturer, was accused of making or selling products that fell within the scope of these patents.
The recorded basis of termination is Consent Judgment. The docket order, however, states that the Court granted Viavi's motion to dismiss its patent infringement claims against PTOT, dismissing Viavi's claims with prejudice and PTOT's counterclaims without prejudice; PTOT's re-noticed motion for summary judgment of non-infringement was denied as moot. The specific terms underlying the parties' agreement are not disclosed in the available record.
The case ran for 998 days — nearly the full three years that optical patent disputes of this complexity typically require before resolution. PTOT had a live summary judgment motion on non-infringement pending at the time of closure, suggesting the litigation had reached an advanced stage. What drove the parties toward a negotiated resolution at this juncture, and any commercial or licensing terms that may accompany the Consent Judgment, are not disclosed in the public record.
See Complete Case & Patent Analysis →Filing to Consent Judgment in 998 days
998 days from filing to close — nearly three full years of active litigation
US9945995B2 — optical filter and sensor system technologies
Any company designing, manufacturing, or sourcing optical filters and sensor system components for US-market products should treat this case as a trigger for a proactive FTO review. Viavi pursued four patents across nearly three years of litigation, demonstrating sustained enforcement intent. Filter manufacturers, sensor module integrators, and their downstream customers in imaging and photonics are all within the realistic enforcement perimeter.
Official order — verbatim text
The docket order grants Viavi's own motion to dismiss its infringement claims with prejudice while dismissing PTOT's counterclaims without prejudice — an asymmetric outcome that leaves PTOT's defences legally intact for future proceedings. The recorded basis of termination is Consent Judgment; the order text is styled as a court-granted dismissal. The specific terms of any underlying agreement between the parties are not disclosed in the available record.
Consent judgment: what the agreed resolution means for both parties
A consent judgment is a court-entered, binding resolution
A consent judgment is a formal judgment entered by the court on terms agreed between the parties. It carries the same legal force as a litigated judgment and is immediately enforceable. Unlike a simple settlement agreement, it places the resolution on the court's docket as an order, giving either party the right to return to court for enforcement. The specific agreed terms in this case are not disclosed in the available record.
Court-entered, binding and finalViavi's infringement claims dismissed with prejudice
Under the recorded Consent Judgment, Viavi's patent infringement claims against PTOT are dismissed with prejudice — meaning Viavi cannot re-assert those same claims against PTOT in a future action. Whether Viavi secured any commercial concessions, licensing terms, or design-around commitments from PTOT as part of the agreed resolution is not disclosed in the available public record.
Claims dismissed with prejudicePTOT's counterclaims dismissed without prejudice
PTOT's counterclaims — which included a pending summary judgment motion on non-infringement — were dismissed without prejudice, preserving PTOT's ability to raise those arguments in future proceedings if circumstances warrant. The pending summary judgment motion was denied as moot. What PTOT committed to, if anything, as part of the consent judgment is not disclosed in the available record.
Counterclaims preserved for future useOptical filter IP enforcement signals active portfolio management
Viavi's willingness to litigate four optical filter patents through nearly three years of proceedings, to the point of a pending summary judgment motion, signals active and committed enforcement of its optical filter portfolio. Competitors and suppliers operating in the optical filter and sensor system space should treat these four patents as live enforcement risks and monitor Viavi's broader portfolio for continuation filings and related applications.
Active optical filter IP enforcementFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Viavi Solutions, Inc. | Company | /Search in Eureka ↗ |
| Defendant | Platinum Optics Technology, Inc. | Company | /Search in Eureka ↗ |
| Plaintiff counsel | Charles J. Monterio | Attorney | Counsel for Viavi Solutions, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Frank C. Cimino , Jr. | Attorney | Counsel for Viavi Solutions, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Gregory James Lundell | Attorney | Counsel for Viavi Solutions, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Megan Sunkel Woodworth | Attorney | Counsel for Viavi Solutions, Inc.Search in Eureka ↗ |
| Plaintiff counsel | William Andrew Hector | Attorney | Counsel for Viavi Solutions, Inc.Search in Eureka ↗ |
| Plaintiff counsel | William John Ulrich | Attorney | Counsel for Viavi Solutions, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Haley Guiliano, LLP | Law Firm | Representing Viavi Solutions, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Venable LLP | Law Firm | Representing Viavi Solutions, Inc.Search in Eureka ↗ |
| Defendant counsel | Andrew Ryan Sommer | Attorney | Counsel for Platinum Optics Technology, Inc.Search in Eureka ↗ |
| Defendant counsel | Cyrus T. Frelinghuysen | Attorney | Counsel for Platinum Optics Technology, Inc.Search in Eureka ↗ |
| Defendant counsel | David Spencer Bloch | Attorney | Counsel for Platinum Optics Technology, Inc.Search in Eureka ↗ |
| Defendant counsel | Jeffrey Ray Colin | Attorney | Counsel for Platinum Optics Technology, Inc.Search in Eureka ↗ |
| Defendant counsel | Vivian S. Kuo | Attorney | Counsel for Platinum Optics Technology, Inc.Search in Eureka ↗ |
| Defendant law firm | Greenberg Traurig LLP | Law Firm | Representing Platinum Optics Technology, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | California Northern District CourtSearch in Eureka ↗ |
R&D signals in the optical filter and sensor system IP space
Forward-looking patent and innovation intelligence derived from Viavi Solutions' and Platinum Optics Technology's activity in the optical filter, thin-film coating, and sensor system domains.
Viavi's optical filter portfolio: depth beyond the four asserted patents
Viavi's assertion of four patents with application dates spanning 2013–2017 suggests a long-running optical filter filing programme. R&D teams should search for continuations, divisionals, and CIPs stemming from these priority chains to understand the full claim perimeter Viavi is building around thin-film filter and sensor system architectures.
Layered optical filter IPFiling trends in precision optical filter and bandpass filter technologies
Optical bandpass and notch filter technologies are seeing accelerating patent activity driven by LiDAR, AR/VR, and hyperspectral imaging demand. Understanding who is filing in the thin-film optical filter space — and where claim boundaries are being drawn — is critical for teams designing next-generation sensor modules.
Optical filter filing trendsPlatinum Optics Technology's own patent position in optical coatings
PTOT is a volume optical filter and coating manufacturer with operations serving global OEM customers. Mapping PTOT's own patent filings — if any — and its reliance on design-around strategies or cross-licensing signals can help competitors and partners assess its IP posture and vulnerability to future enforcement actions.
PTOT optical coating IP mapDesign-around opportunities adjacent to Viavi's asserted filter claims
PTOT's pending non-infringement summary judgment motion — dismissed without prejudice — suggests there may be non-infringing filter architectures that engineering teams can develop. Identifying claim boundaries in US9945995B2 and its family members, then mapping adjacent white space in filter layer design, could open defensible product pathways for sensor system developers.
Filter design-around white spaceSimilar optical filter patent infringement cases in US district courts
Cases involving optical filter and sensor system patent enforcement in the Northern District of California and related US federal courts, relevant to Viavi's multi-patent assertion strategy.
What this case signals for the optical filter IP landscape
Viavi's multi-patent enforcement action against a Taiwanese OEM reflects intensifying IP competition in the precision optical components sector.
Four-patent assertion signals a broad claim perimeter — not a single chokepoint
Asserting four distinct optical filter patents across different application numbers suggests Viavi built layered claim coverage over time. Competitors should map all four patents — US9945995B2, US10222526B2, US9354369B2, and US9588269B2 — and any continuations before finalising product designs in the optical filter and sensor space.
PTOT's non-infringement motion was pending at closure — a signal worth tracking
PTOT had a re-noticed summary judgment motion on non-infringement ready to be heard when the case closed. That the parties resolved rather than allowing the court to rule suggests neither side had certainty on validity or infringement. Other defendants facing these patents may find the abandoned non-infringement arguments instructive when developing their own defence strategy.
Viavi v Platinum — key questions answered
The recorded basis of termination is Consent Judgment. The docket order states the court granted Viavi's motion to dismiss its patent infringement claims with prejudice, while PTOT's counterclaims were dismissed without prejudice. The specific terms of any underlying agreement are not disclosed in the available record.
Viavi asserted four patents: US9945995B2, US10222526B2, US9354369B2, and US9588269B2. All are directed to optical filter and sensor system technologies, with application dates spanning 2013 through 2017.
Viavi's infringement claims against PTOT were dismissed with prejudice under the recorded Consent Judgment, meaning Viavi cannot bring those same claims against PTOT again. The patents themselves remain in force and may be asserted against other parties. Specific terms of the Consent Judgment are not publicly disclosed.
PTOT's re-noticed motion for summary judgment of non-infringement was denied as moot following the dismissal order. PTOT's counterclaims were dismissed without prejudice, which preserves the right to raise those arguments in future proceedings, though the specific circumstances under which they might be revived depend on the underlying agreement, which is not publicly disclosed.
The case ran for 998 days — nearly three years — from filing on August 7, 2020 to closure on May 2, 2023. The length and the advanced stage of proceedings at closure, including a live summary judgment motion, suggest this was substantively contested litigation rather than an early settlement, signalling the seriousness of Viavi's enforcement posture in the optical filter space.
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