Charles Verhoeven of Quinn Emanuel.

Quinn Emanuel Urquhart & Sullivan has come out swinging for Verizon Communications Inc.

The New York-based company has tapped Quinn for a clash of wireless giants with Huawei Technologies Co. Ltd. in two Texas federal courts.

Huawei sued Verizon in the Eastern and Western districts of Texas in February, accusing Verizon of using its patented technology to transmit massive amounts of data from base stations or access points to remote destinations.

At the time Verizon publicly dismissed the lawsuits as "nothing more than a PR stunt." But Huawei was reported to be seeking more than $1 billion in license negotiations last year, and Verizon is taking the suits seriously enough to enlist Charles Verhoeven and five other Quinn attorneys, along with Deron Dacus of The Dacus Firm in Tyler, Texas.

"Verizon's patented ideas fuel Verizon's networks—not the outdated and valueless techniques referenced in Huawei's complaint," Verizon contends in answers to the complaints filed Monday and Wednesday. Huawei's suits are "another example of an attempt by Huawei to take credit for American innovation," Verizon says.

Each answer is signed by Dacus. Quinn partners Verhoeven and Patrick Curran also appear on each of the briefs, with partner Brianne Straka and of counsel John McKee joining the Eastern District filing and partners Brian Mack and Deepa Acharya signing onto the Western District filing.

Huawei is asserting five patents in the Eastern District that are essential for practicing the International Telecommunications Union's G.709 standard interface for optical transport networks. Huawei is represented by Caldwell, Cassady & Curry and the Love Law Firm in that case.

The Western District suit asserts seven patents that Huawei contends are infringed by Cisco Systems Inc. and Juniper Networks Inc. routers that are deployed in Verizon's networks. Fish & Richardson and Naman, Howell, Smith & Lee represent Huawei in the Western District.

The Western District case sets up a rematch of counsel from one of last year's highest-profile patent cases, Apple v. Qualcomm in San Diego federal court. Fish represented Apple (along with Boies Schiller Flexner) and Quinn represented Qualcomm (along with Cravath, Swaine & Moore and other firms). That case settled during opening statements.