Thaddeus J. "Thad" O'Sullivan

Sara Amies is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Sara, who practices law in Seattle, Washington, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sara is held by other top lawyers in the same geographic and legal practice area.

Erin Riley knows that strong relationships are the key to complex cases.As a partner in Keller Rohrback’s Complex Litigation Group, Erin has allowed these collaborative and long-lasting relationships to inform her work for over 20 years. Since 2001, Erin’s practice has focused on representing employees and retirees in Employee Retirement Income Security Act (“ERISA”) actions involving defined contribution, defined benefit, and health benefit plans. Erin has worked on n...

Jennifer Coombs is a well-established Family Law Attorney at Envision Family Law and is a dedicated advocate for her clients. Jennifer has over 25 years of experience in family law, juvenile dependency matters, and civil litigation. Jennifer is well known for her knowledge and skill in matters involving parenting plans and non-parental custody issues. Prior to joining Envision Family Law, Jennifer was an established civil litigation attorney managing family law and dependency cases. She repre...

Douglas F. Stewart is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property. Douglas F., who practices law in Seattle, Washington, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Douglas F. is held by other top lawyers in the same geographic and legal practice area.

Darcel Lobo is a top attorney recognized by Best Lawyers in the practice area(s) of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law and Litigation - Bankruptcy. Darcel, who practices law in Normandy Park, Washington, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Darcel is held by other top lawyers in the same geographic and legal practice area.

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

Dipa N. Sudra is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law and Litigation - ERISA. Dipa N., who practices law in Seattle, Washington, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Dipa N. is held by other top lawyers in the same geographic and legal practice area.

David O. Cantu is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Finance Law and Real Estate Law. David O., who practices law in Seattle, Washington, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David O. is held by other top lawyers in the same geographic and legal practice area.

Jeffrey B. Coopersmith is a veteran trial lawyer and former federal prosecutor with a Pacific Northwest, California, and national practice focusing on white collar criminal matters and parallel civil and regulatory proceedings, federal and state False Claims Act investigations and litigation, internal investigations for private and public entities, and complex commercial litigation. During his eight-year tenure as an Assistant United States Attorney, Jeff handled some of the largest and most ...

Sheryl Willert is a Member in the Seattle office of Williams Kastner, where she chairs the firm’s Labor & Employment Practice Group and leads its Diversity Committee. She previously served as the firm’s Managing Director from 1996–2001 and again from 2006–2013, and she continues to serve on the firm’s board of directors. Sheryl’s legal practice focuses on counseling, investigations, and dispute resolution across a broad spectrum of employment law matter...