McData expands storage suit

The company is seeking a preliminary injunction to stop rival Brocade from shipping storage network products that it says infringes one of its patents.

Stephen Shankland principal writer
Stephen Shankland has been a reporter at CNET since 1998 and writes about processors, digital photography, AI, quantum computing, computer science, materials science, supercomputers, drones, browsers, 3D printing, USB, and new computing technology in general. He has a soft spot in his heart for standards groups and I/O interfaces. His first big scoop was about radioactive cat poop.
Expertise processors, semiconductors, web browsers, quantum computing, supercomputers, AI, 3D printing, drones, computer science, physics, programming, materials science, USB, UWB, Android, digital photography, science Credentials
  • I've been covering the technology industry for 24 years and was a science writer for five years before that. I've got deep expertise in microprocessors, digital photography, computer hardware and software, internet standards, web technology, and other dee
Stephen Shankland
McData is seeking a preliminary injunction to stop rival Brocade Communications Systems from shipping storage network products that McData says infringes one of its patents.

McData and Brocade make networking hardware that connects storage systems and servers in storage area networks, or SANs. McData sued in February, arguing that Brocade's products infringe on a patent McData holds on "frame filtering," in which a switch monitors and measures data flow in itself to obtain higher efficiency.

Brocade said the suit was "without merit" at the time, and on Tuesday it reiterated its position with the request for preliminary injunction that McData filed Monday.

"The patent-infringement lawsuit is without merit and...Brocade intends to fight this vigorously in the courts," the company said in a statement Tuesday.

Brocade added that it has "a contract with McData that includes a (patent) cross-license and agreement not to sue covering Brocade's products." And Brocade said McData's patent is invalid because "it relates to technology developed by Brocade and others prior to McData's filing of the patent."

McData said it's "extremely concerned" that Brocade began shipping its new Silkworm 3200 switch last week, a product that uses frame filtering.

Brocade has leading market share for SAN switches, but McData is stronger in the high end of the market, analysts say.

McData sued in Denver Federal District Court.