David Eiseman

Donald C. Arbitblit is a leader among plaintiffs’ attorneys in assessing the legal, medical, and scientific aspects of personal injury, mass torts , and environmental and toxic exposure litigation . Don has served on Plaintiffs’ Science/Expert Committees in several national cases and served on the Plaintiffs’ Steering Committee in the Actos bladder cancer injuries federal multidistrict litigation that settled in 2015 for $2.4 billion. Since 2022, Don has contributed to the d...

David Friedman is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Land Use and Zoning Law. David, who practices law in San Francisco, California, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David is held by other top lawyers in the same geographic and legal practice area.

Lisa Barnett Sween is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. Lisa Barnett, who practices law in San Francisco, California, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lisa Barnett is held by other top lawyers in the same geographic and legal practice area.

Christopher L. Wanger is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Christopher L., who practices law in San Francisco, California, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher L. is held by other top lawyers in the same geographic and legal practice area.

Spencer’s practice focuses on catastrophic personal injury and wrongful death cases involving defective products, vehicular collisions, dangerous conditions of public and private property, and medical malpractice. Outside of his practice at Walkup, he also teaches at the University of California-Berkeley Law School as a lecturer in trial advocacy. In addition to his teaching, he directs Berkeley Law’s external trial competition program and coaches multiple trial advocacy teams. Un...

Frank Cialone is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Trusts and Estates. Frank, who practices law in San Francisco, California, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Frank is held by other top lawyers in the same geographic and legal practice area.

Darryl Woo is a veteran trial lawyer who has successfully tried numerous cases to verdict, and concentrates his practice on patent litigation and other complex technology litigation, principally in the areas of semiconductors, information technology, life sciences and biotechnology. He has appeared as lead counsel in patent litigation across the country, including the ITC, dealing with technologies ranging from software to semiconductor fab equipment, materials chemistry, voice over IP, fiber...

Robert advises employers, fiduciaries, and service providers on the design, implementation, and ongoing compliance of qualified retirement plans and employee benefits programs. Based in San Francisco, California, he represents clients in matters involving Employee Benefits (ERISA) Law , including compliance with ERISA, the Internal Revenue Code, and guidance issued by the Department of Labor and Internal Revenue Service. With more than 15 years of experience, Robert counsels clients on a broa...

George Tichy is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. George, who practices law in San Francisco, California, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which George is held by other top lawyers in the same geographic and legal practice area.

Paul D. Tanaka P.C. is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Paul D., who practices law in San Francisco, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul D. is held by other top lawyers in the same geographic and legal practice area.