Silicon Valley

In 1991, Weil was the first global, non-California law firm to open a Silicon Valley office. Now, more than 30 years later, we continue to be a leader in this critically-important legal market.

Our Practice

The Silicon Valley Office is a thriving contributor to Weil’s remarkable record of success. The office boasts “gold standard” practice groups in the areas of Banking & Finance, Complex Commercial Litigation, Cybersecurity, Data Privacy & Information ManagementMergers & Acquisitions and Private Equity, Patent Litigation & Strategic IP Counseling and Technology & IP Transactions. All practice groups in the Silicon Valley Office share a common passion for innovation and technology as well as a commitment to efficiency and excellence.

These values have earned the office an impressive client list, including such leading companies and private equity firms as Alibaba, Bio-Rad Laboratories, Core-Mark, Conversica, Dell, eBay, Evercore, Facebook, Francisco Partners, Genstar Capital, Getty Images, The Gores Group, Groupon, Guardant Health, Illumina, Maxim Integrated, Micron Technology, Facebook Technologies/Oculus, Panasonic, Rakuten, Silver Lake, Softbank, Tesla Motors, TPG, Trive Capital, Vonage and Walgreens.

Weil is great to work with. The team is extremely knowledgeable and thorough” and “can handle anything.”

Chambers USA

The Silicon Valley office of this multiservice firm is known for its IP litigation practice and, in particular, for patent cases.”

Chambers USA

Pro Bono Initiatives and Community Service

Philanthropy is a cornerstone of the Silicon Valley office. Through its “Weil Gives Back” program, lawyers and staff collaborate with local charities, such as Second Harvest Food Bank, Community Legal Services in East Palo Alto, Progeria Research Foundation, Wardrobe for Opportunity, American Lung Association and the Justice & Diversity Center of the Bar Association of San Francisco, with respect to meaningful, and often life-changing, community service and pro bono legal projects.

The Silicon Valley office’s dedication to the community is evident through its history of pro bono success.  For example, Weil served as co-counsel with the Center for Constitutional Rights and others in reaching a landmark settlement in the federal class action Ashker v. Governor of California that ended indeterminate, long-term solitary confinement in all California state prisons.

Over the years, Silicon Valley lawyers have also contributed thousands of hours of pro bono service to the Legal Aid Society of San Mateo County, including a recent case involving relief for a victim of family elder abuse. In recognition of the Firm’s commitment to providing pro bono legal services to communities in need, Weil was honored by the organization with the “Guardian of Justice” Award in 2016.

Awards and Recognition

  • Leaders in M&A and Private Equity: Craig Adas and Kyle Krpata were recognized for both Corporate/M&A and Private Equity: Buyouts as leading lawyers in Chambers USA California in 2024. Craig Adas was named a “California Trailblazer” by The Recorder in 2020.
  • Technology Savvy: Our lawyers advise 83% of the 2018 Fortune 100 technology companies based in the Bay Area. Karen Ballack was recognized among the Top Intellectual Property Lawyers in California by the Daily Journal in 2022 and 2024, and was previously named 2022 Technology Lawyer of the Year at the Euromoney Women in Business Law Americas Awards. Kyle Krpata was recognized as a 2019 Technology Trailblazer by The National Law Journal.
  • Top Ranked Litigators: David Singh named a 2023 Law360 MVP in Class Action; Derek Walter named 2020 Law360 MVP in Life Sciences; Edward Reines named a 2022 Trials MVP by Law360, a Top IP Attorney in California and among the Top 100 Lawyers in California in 2021, 2022 and 2023 by the Daily Journaland as a 2020 Life Sciences Trailblazer by The National Law Journal. Anne Cappella was named a “California Trailblazer” by The Recorder in 2020.
  • Award Winning Female Partners: Karen Ballack was recognized as a top tech lawyer by the Daily Journal in 2022 and 2024, and by The Recorder in 2017. Anne Cappella was named Technology Lawyer of the Year at the Euromoney Women in Business Law Americas Awards in 2023 and to the 2021 Top Women Lawyers in California by the Daily Journal. Karen Ballack named a Top IP Attorney in California in 2022 by the Daily Journal, and a 2017 Trusted Advisor and among Women Leaders in Tech Law in 2017 by The Recorder.
  • Deep Bench of Rising Stars: Justina Chen was named a Rising Stars at the 2024 Power of Women to Make a Difference Awards Luncheon, hosted by United Way of New York City.Bambo Obaro was named to the 2022 40 & Under Hot List by Benchmark Litigation, his second consecutive year on the list. He was previously named 2020 Top 40 Under 40 by the Daily Journal. David Singh named to Benchmark Litigation’s 2018 “40 and Under Hot List” and a 2017 Rising Star for Class Actions by Law360.