SAN FRANCISCO — Dentons and Nixon Peabody are bolstering their IP practices in the Valley.

Dentons recruited U.S. Patent and Trademark Office veteran Lissi Mojica and her colleague Kevin Greenleaf from 100-attorney Schwegman, Lundberg & Woessner. The pair specializes in post-grant litigation before the PTO, an area boosted by the 2011 America Invents Act.

Robert Kramer, co-chairman of Dentons’ national patent litigation practice, said the firm has “experienced strong demand from clients to initiate or defend” inter partes reviews and reexaminations in the Patent Office. He said he “rarely” comes across candidates, such as Mojica and Greenleaf, who know post-grant proceedings “inside and out.” Mojica has joined the firm’s Palo Alto office as principal, and Greenleaf as counsel.

During a 19-year tenure at the USPTO, Mojica served as the first director of the Central Reexamination Unit, establishing processes and procedures and hiring and training other patent examiners. In 2008, she departed for the IP firm Novak Druce Connolly Bove + Quigg, where she met Greenleaf, a former engineer at Intel Corp. The two moved to Schwegman, Lundberg, a patent prosecution firm, about three years later.

Mojica said she was attracted to Dentons’ IP and technology practice because of its strength in litigation and prosecution benches.

Meanwhile, Nixon Peabody has poached IP litigators Jeffrey Lokey and Shawn Hansen from Greenberg Traurig and Manatt, Phelps & Phillips, respectively.

Though Lokey, who focuses on patent and trade secret litigation, was most recently a partner at Greenberg Traurig, he and Hansen previously worked together at Manatt for almost a decade. Hansen, who represents clients in the tech and media industries, will spend some of his time in Los Angeles.

Both litigators said the opportunity to reunite prompted their jump to Nixon Peabody. “We’re like a good Venn diagram. We have a lot of client contacts in common,” said Lokey.

Mlegal Consulting’s Daren Wein and Martha Angell advised Hansen and Lokey on their moves.

Contact the reporter at npierrepont@alm.com.