Defendant
1 case as defendant.
Ciena Corporation is an American optical networking systems and software company headquartered in Hanover, Maryland, founded in 1992. The company is publicly traded on the New York Stock Exchange under the ticker CIEN and is a component of the S&P 500. As of November 2025, Ciena reported revenues of approximately $4.8 billion and employed over 9,000 individuals. Its market capitalization stood at about $83.6 billion as of May 15, 2026.
Ciena develops and markets equipment, software, and services primarily for the telecommunications industry and large cloud service providers. Its product offerings support the transport and management of voice and data traffic on communications networks and include optical networking, routing, and switching platforms. Key technologies include WaveLogic modem platforms for high-capacity optical networks (e.g., WaveLogic 6 supporting up to 1.6 terabits-per-second capacity) and the Blue Planet software platform for network automation, orchestration, and analytics. Ciena also provides technology for undersea cable networks and various managed, maintenance, and advisory services.
In terms of patent litigation, Ciena Corporation exhibits an active posture against a recognized Non-Practicing Entity (NPE), K.Mizra LLC. Ciena has been involved in two tracked cases, appearing once as a defendant and once as a plaintiff, both against K.Mizra LLC. The defendant case, K.Mizra LLC v. Ciena Corporation, was filed in the United States District Court for the Northern District of Georgia on November 25, 2024. The plaintiff case, Ciena Corporation v. K.MIZRA LLC, was initiated on August 30, 2025, at the Patent Trial and Appeal Board (PTAB), indicating Ciena's use of post-grant review mechanisms to challenge the asserted patents.
K.Mizra LLC is known as a patent assertion entity that acquires patents, often related to wireless communications and network security, for licensing and litigation purposes. The specific patent asserted by K.Mizra against Ciena, U.S. Patent 8,782,282, relates to communications in a network management system. This suggests Ciena is defending its operational products and actively challenging the validity of patents asserted by NPEs.
K.Mizra LLC filed a patent infringement suit against Ciena Corporation in the Northern District of Georgia asserting US patent 8782282. The case is assigned to Judge Steven D. Grimberg and is currently active.