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In addition to Drinker Biddle & Reath’s recent hiring of IP attorney Ashley Pezzner, six other patent lawyers joined the firm.

Hui-Ju Wu, counsel in the firm’s intellectual property practice group, focuses her practice on life sciences, with an emphasis in the plant science, biotechnology, chemical and pharmaceutical fields.

Geoffrey Zelley, also counsel, represents clients in a variety of areas, including counseling and opinions, patent litigation and patent prosecution in the chemical and pharmaceutical areas.

Hal Pezzner, of counsel, represents clients in areas including patent litigation, patent prosecution, patent reissue and reexamination and trademarks in the mechanical arts.

Daniel Rube, Claudia Schultze and Larry Williams joined as associates.