Mary Duffy "Duffy" Carolan

Christin J. Hill is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Securities. Christin J., 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 Christin J. is held by other top lawyers in the same geographic and legal practice area.

Valerie N. Rose is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Plaintiffs and Personal Injury Litigation - Plaintiffs. Valerie N., 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 Valerie N. is held by other top lawyers in the same geographic and legal practice area.

Letitia D. Moore is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law and Land Use and Zoning Law. Letitia D., 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 Letitia D. is held by other top lawyers in the same geographic and legal practice area.

Kenneth E. Keller is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Litigation - Patent. Kenneth E., 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 Kenneth E. is held by other top lawyers in the same geographic and legal practice area.

Deborah Schmall is widely recognized as one of the leading environmental law practitioners in California. She recently served as the Co-Chair of the Global Environment and Energy Practice at Paul Hastings. She is ranked Band One in Chambers for California Environmental Law. Starting with her career at the U.S. Justice Department’s Environmental Enforcement Section, where she prosecuted civil and criminal enforcement matters under a range of federal environmental laws, Deborah has practi...

G. Michelle Ferreira counsels individuals, partnerships, estates and corporations in tax disputes with the Internal Revenue Service and state and local tax agencies, including the California Franchise Tax Board, the State Board of Equalization, the Employment Development Department and county assessment appeals boards. As a former tax litigator for the Internal Revenue Service, Michelle brings unique experience to clients who have complex and sensitive tax and penalty disputes. Michelle repre...

Michele Ballard Miller is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Michele Ballard, 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 Michele Ballard is held by other top lawyers in the same geographic and legal practice area.

Arthur J. Shartsis is a top attorney recognized by Best Lawyers in the practice area(s) of Bet-the-Company Litigation, Commercial Litigation and Criminal Defense: White-Collar. Arthur J., who practices law in San Francisco, California, has been recognized since 1991. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Arthur J. is held by other top lawyers in the same geographic and legal practice area.

Marc Bruner is a partner with the firm's Environment, Energy & Resources practice. Marc represents governmental entities and private companies in a wide variety of environmental, land use, and natural resource matters. He counsels clients on formulating long-term development strategies, preparing and processing environmental studies and land use plans, and obtaining the necessary federal, state and local permits and approvals for a broad range of private and public development projects &n...

Michael O’Bryan is a partner in the firm’s Corporate Department. His practice focuses on U.S. and international mergers, acquisitions, divestitures, and other strategic transactions, including “going private” and other related party transactions. He has been involved in more than 350 M&A transactions, advising companies, boards, and special committees, as well as investment banks, in both negotiated and contested transactions. Mr. O’Bryan has worked extensive...