Mark A. Leahy

Lloyd Winawer is known for his work on complex business litigation and investigations. Lloyd focuses on disputes arising from mergers and acquisitions and other commercial transactions and securities law matters. Lloyd is the leader of Bergeson’s M&A Dispute Resolution Group. Lloyd has significant expertise in M&A disputes, having litigated and advised on numerous post-closing controversies related to earnouts, purchase price adjustments, contingent value rights, milestone and p...

Mark R.S. Foster is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Mark R.S., who practices law in Palo Alto, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark R.S. is held by other top lawyers in the same geographic and legal practice area.

Erika is the Co-chair of Hopkins & Carley's Trust and Estate Litigation practice. She represents and advises professional fiduciaries, trustees, beneficiaries, high net-worth individuals, family offices, and businesses on a range of trust and estate litigation and trust administration matters.

Judith Hasko is the Chair of the Transactional Department and Co-Chair of WilmerHale’s Life Sciences Practice. She provides counsel to life sciences companies and their investors on strategic, intellectual property and technology-based commercial transactions. Companies in the biotechnology, pharmaceutical, medical device and diagnostic product sectors, along with their investors, depend on Ms. Hasko for guidance and execution of licensing, corporate partnerships, joint ventures, co-pro...

Commercial litigator Adam Trigg represents directors, officers, and founders in complex securities litigation, shareholder disputes, business divorces, and other intracompany controversies. His Silicon Valley-based clients include executives and leaders of venture capital, life sciences, biotechnology, and high-tech companies. Securities Litigation and SEC Investigations Adam has defended numerous officers, directors, and companies in securities class actions, shareholder derivative actions, ...

Armando Castro is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Armando, who practices law in Palo Alto, California, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Armando is held by other top lawyers in the same geographic and legal practice area.

When a company or its leaders are at risk, founding partner Daniel J. Bergeson uses his substantial litigation and trial experience to advocate for their rights and reputations in lawsuits involving securities, intellectual property, employment, private equity and venture capital, and commercial law. He focuses on the essential facts to persuade juries, judges, and triers of cases in state and federal courts and arbitration forums in Silicon Valley, Delaware, New York, and other dispute resol...

Lance A. Etcheverry is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Lance A., who practices law in Palo Alto, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lance A. is held by other top lawyers in the same geographic and legal practice area.

Breann Robowski is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation and Controversy - Tax. Breann, who practices law in Palo Alto, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Breann is held by other top lawyers in the same geographic and legal practice area.

Ed Batts is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Ed, who practices law in Palo Alto, California, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ed is held by other top lawyers in the same geographic and legal practice area.