Ciena Corporation v. K.MIZRA LLC

This case involves an Inter Partes Review (IPR) petition filed by Ciena Corporation against K.MIZRA LLC before the Patent Trial and Appeal Board (PTAB). Ciena Corporation is a prominent American optical networking systems and software company, recognized for its advanced optical networking components for telecommunications carriers and cloud service providers. K.MIZRA LLC, conversely, operates as a patent licensing company, often referred to as a Non-Practicing Entity (NPE) or Patent Assertion Entity (PAE), focusing on acquiring and monetizing high-value patent portfolios through licensing and litigation. K.MIZRA has asserted numerous patents globally, sourcing them from various inventors, including well-known multinational corporations and research institutes.

The sole patent at issue in this IPR is U.S. Patent 8,782,282, which broadly pertains to "communications in a network management system". Ciena filed the IPR as a defensive measure in response to an underlying patent infringement lawsuit, K.Mizra LLC v. Ciena Corporation, Case No. 1:24-cv-05442, which K.MIZRA LLC initiated in the U.S. District Court for the Northern District of Georgia on November 25, 2024. While the IPR itself does not directly address an "accused product," the underlying district court litigation typically targets specific products or services offered by Ciena that allegedly incorporate the technology claimed in the '282 patent.

The procedural posture of IPR2025-01362 is notable because the PTAB did not institute the review, citing procedural reasons based on discretionary denial. The petition was filed on August 30, 2025, but the Director issued a "Director Discretionary Decision: Deny" on January 8, 2026, which was subsequently affirmed by an "Order Denying Director Review of Institution Decision" on March 2, 2026. This denial was primarily based on the PTAB's application of the Fintiv factors, which weigh against institution when there is a parallel district court proceeding. Specifically, K.MIZRA argued that the anticipated district court trial date in Georgia was expected to be contemporaneous with the PTAB's deadline for a final written decision, and Ciena had not indicated an intent to seek a stay in the district court or challenged all patents asserted in the parallel litigation. This case highlights the PTAB's discretion in denying IPRs, especially when district court litigation is already underway and could lead to duplicative efforts or an inefficient use of resources. The underlying district court case was closed on March 27, 2026, suggesting a resolution, likely a settlement, that may have further influenced the PTAB's stance or the parties' positions regarding the IPR.

The patent infringement litigation between K.Mizra LLC and Ciena Corporation, Case No. 1:24-cv-05442, in the U.S. District Court for the Northern District of Georgia, saw several key developments before its closure.

Filing & Initial Pleadings:

• K.Mizra LLC filed its complaint with a jury demand against Ciena Corporation on November 25, 2024. The complaint alleged infringement of U.S. Patent 8,782,282, which relates to "communications in a network management system," and also referenced U.S. Patent 9,485,176, titled "Global IP-Based Service Oriented Network Architecture".
• On November 27, 2024, a Standing Order Regarding Civil Litigation was filed by Judge Steven D. Grimberg, outlining the court's policies and procedures, including guidelines for responses to pleadings and motions. This order explicitly noted that during the pendency of a motion to dismiss, all discovery is automatically stayed.

Pre-trial Motions of Substance:

• While the specific date of Ciena's answer and counterclaims is not immediately available, the court's standing order detailed requirements for responsive pleadings, including copying the paragraph being responded to.
• Ciena filed a motion to dismiss for failure to state a claim under Federal Rule of Civil Procedure 12(b)(6). An oral argument on motions to dismiss was held on October 21, 2025, before Judge Grimberg. A transcript of this hearing indicates discussions regarding the patent's claims and the expert declaration submitted by K.Mizra.
• It is not clear from the available information if other substantive pre-trial motions, such as motions to transfer, stay pending IPR (beyond the IPR's discretionary denial), or summary judgment, were filed or fully adjudicated.

Claim Construction (Markman) Outcomes:

• The available information does not specify if the case reached the claim construction (Markman) stage or resulted in a Markman order. Given the case's relatively short duration and dismissal, it is possible this stage was not fully completed.

Discovery Milestones:

• The court's standing order indicated an automatic stay of discovery during the pendency of a motion to dismiss. Beyond this, specific significant discovery milestones are not readily available in the provided information.

Trial Events, Verdict, and Post-trial Motions:

• The case did not proceed to trial.

Settlement, Dismissal, Judgment, or Appeal:

• The case was closed on March 27, 2026. This swift closure, especially after the PTAB's discretionary denial of Ciena's IPR petition, strongly suggests a confidential settlement between the parties. The court's standing order encourages parties to alert the court immediately upon reaching a settlement in principle.

Parallel PTAB IPR/PGR Proceedings:

• Ciena Corporation filed an Inter Partes Review petition, IPR2025-01362, against K.MIZRA LLC challenging US patent 8,782,282, on August 30, 2025.
• The PTAB issued a "Director Discretionary Decision: Deny" on January 8, 2026, refusing to institute the IPR.
• Ciena Corporation requested Director Review of this discretionary denial on February 8, 2026, arguing that the denial did not comply with the Administrative Procedure Act (APA), the America Invents Act (AIA), or the U.S. Constitution, and lacked a reasoned decision.
• K.Mizra LLC filed an authorized response to the Director Review Request on February 16, 2026.
• The "Order Denying Director Review of Institution Decision" was issued on March 2, 2026, affirming the discretionary denial.
• The PTAB's discretionary denial was based on the application of the Fintiv factors, considering the parallel district court proceeding and the anticipated trial date. The PTAB noted that K.MIZRA argued the district court trial date was expected to align with the PTAB's deadline for a final written decision, and Ciena had not committed to seeking a stay or challenging all asserted patents in the district court litigation. This decision influenced the litigation by removing a potential avenue for Ciena to challenge the patent's validity before the PTAB, thereby strengthening K.Mizra's position in the district court. The subsequent closure of the district court case shortly after the final IPR denial suggests a likely settlement, where the denial may have played a role in the parties' negotiation.

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The user is asking for the counsel of record representing Ciena Corporation in the patent infringement case K.Mizra LLC v. Ciena Corporation, Case No. 1:24-cv-05442. I need to find the names, roles, firms, office locations, and relevant experience for these attorneys. I will primarily use web search, focusing on court dockets, legal news sites like Law360, and firm websites. I will also check for counsel in the related IPR, IPR2025-01362, as there is often overlap.

Given the case is closed, I should be able to find the docket through a search.The following counsel represented Ciena Corporation in the patent infringement case K.Mizra LLC v. Ciena Corporation, Case No. 1:24-cv-05442, in the U.S. District Court for the Northern District of Georgia, and/or in the related IPR2025-01362 before the PTAB:

For Ciena Corporation (Plaintiff in IPR, Defendant in District Court Case):

• Eugene M. Pak (Lead Counsel)
  • Firm: Sidley Austin LLP, Dallas, TX
  • Note: Mr. Pak is a partner in Sidley's Dallas office and focuses on intellectual property litigation, particularly patent infringement disputes in federal courts and before the PTAB.
• Wade M. Pope (Lead Counsel)
  • Firm: Sidley Austin LLP, Dallas, TX
  • Note: Mr. Pope is a partner at Sidley Austin and concentrates on patent litigation, trade secret disputes, and PTAB proceedings.
• Jeffrey K. Secrest (Counsel)
  • Firm: Sidley Austin LLP, Dallas, TX
  • Note: Mr. Secrest is a managing associate in Sidley's Intellectual Property Litigation group.
• Lauren E. D'Amico (Counsel)
  • Firm: Sidley Austin LLP, Washington D.C.
  • Note: Ms. D'Amico is an associate in Sidley's Intellectual Property Litigation practice, with experience in patent litigation before federal district courts and the PTAB.
• Cyrus V. Morton (Local Counsel)
  • Firm: Morris, Manning & Martin, LLP, Atlanta, GA
  • Note: Mr. Morton is a partner at Morris, Manning & Martin, specializing in intellectual property litigation and often serving as local counsel in Georgia.
• Matthew D. Warenzak (Local Counsel)
  • Firm: Morris, Manning & Martin, LLP, Atlanta, GA
  • Note: Mr. Warenzak is a partner at Morris, Manning & Martin, focusing on intellectual property litigation and technology-related disputes.

The following counsel represented K.Mizra LLC in the patent infringement case K.Mizra LLC v. Ciena Corporation, Case No. 1:24-cv-05442, in the U.S. District Court for the Northern District of Georgia, and/or in the related IPR2025-01362 before the PTAB:

For K.Mizra LLC (Plaintiff in District Court Case, Respondent in IPR):

• Crawford Wells (Lead Counsel for IPR)
  • Firm: Wells & Seltzer, P.C., Houston, TX (implied from common pairings with "Wells, Crawford et al." in PTAB proceedings for K.Mizra).
  • Note: Mr. Wells is frequently listed as counsel for K.Mizra LLC in various PTAB proceedings, often focusing on patent validity challenges.
• Perilla Knox & Hildebrandt LLP (Counsel for District Court Case)
  • Note: This firm signed a document for K.Mizra LLC in the district court litigation.
• Folio Law Group PLLC (Counsel for District Court Case)
  • Note: This firm was also associated with the signature block on a document for K.Mizra LLC in the district court litigation.

Specific individual attorneys from Perilla Knox & Hildebrandt LLP and Folio Law Group PLLC who represented K.Mizra LLC in the district court case are not explicitly named in the provided search results. Similarly, while "Wells, Crawford et al." is mentioned for the IPR, specific individuals beyond Crawford Wells are not detailed.