People: William L. Prickett, Partner
Biography
Mr. Prickett is a partner in the Litigation Department of Seyfarth Shaw LLP, and is Chair of the national Securities and Financial Litigation Practice Group. Mr. Prickett concentrates his practice in the areas of securities litigation, shareholder and corporate governance litigation, patent litigation, and other complex business litigation.
Mr. Prickett has extensive experience counseling and defending clients in securities litigation and SEC investigations and representing clients in shareholder derivative actions, merger and acquisition disputes, and other complex commercial disputes. Mr. Prickett devotes significant time to counseling clients on avoiding securities and insider trading liability and advising clients on fiduciary duty issues in mergers and acquisitions and other corporate transactions.
Mr. Prickett concentrates his intellectual property practice on patent infringement litigation, where he has successfully litigated patents involving, among others, oil and gas technology, recycling technology, dental products, laser angioplasty and encoded pay-per-view television technology.
In 2004, through 2012, Mr. Prickett was selected as one of the State’s "Super Lawyers" in a joint survey conducted by the publishers of Law & Politics magazine and Boston magazine as part of a special publication titled "The Top Attorneys In Massachusetts."
Prior to joining Seyfarth Shaw in 2005, Mr. Prickett was a partner and Co-Chair of the litigation practice group at his former firm, Testa, Hurtwitz & Thibeault, LLP, where he has practiced since 1991. Mr. started his career at Skadden, Arps, Slate, Meagher & Flom LLP.
Mr. Prickett is a partner in the Litigation Department of Seyfarth Shaw LLP, and is Chair of the national Securities and Financial Litigation Practice Group. Mr. Prickett concentrates his practice in the areas of securities litigation, shareholder and corporate governance litigation, patent litigation, and other complex business litigation.
Mr. Prickett has extensive experience counseling and defending clients in securities litigation and SEC investigations and representing clients in shareholder derivative actions, merger and acquisition disputes, and other complex commercial disputes. Mr. Prickett devotes significant time to counseling clients on avoiding securities and insider trading liability and advising clients on fiduciary duty issues in mergers and acquisitions and other corporate transactions.
Mr. Prickett concentrates his intellectual property practice on patent infringement litigation, where he has successfully litigated patents involving, among others, oil and gas technology, recycling technology, dental products, laser angioplasty and encoded pay-per-view television technology.
In 2004, through 2012, Mr. Prickett was selected as one of the State’s "Super Lawyers" in a joint survey conducted by the publishers of Law & Politics magazine and Boston magazine as part of a special publication titled "The Top Attorneys In Massachusetts."
Prior to joining Seyfarth Shaw in 2005, Mr. Prickett was a partner and Co-Chair of the litigation practice group at his former firm, Testa, Hurtwitz & Thibeault, LLP, where he has practiced since 1991. Mr. started his career at Skadden, Arps, Slate, Meagher & Flom LLP.
Education
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J.D., Widener University, Wilmington, School of Law (1989)
Law Review (Del. J. Corp. L) - Research Editor
Winner, 10th Annual DiBona Moot Court Competition
Outstanding Service Award - B.A., Williams College (1985)
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Certified Lean Six Sigma Yellow Belt
Admissions
- Massachusetts
- New York
Courts
- United States Supreme Court
- U.S. Court of Appeals for the First and Federal Circuits
- U.S. District Court for the District of Massachusetts
- U.S. District Court for the Southern and Eastern Districts of New York
Whistleblower Team
Navigating clients through high-stakes regulatory issues.







