Phillip J. DeRosier

Phillip J. DeRosier

Appellate Practice

5.0 (1 reviews)
Detroit, Michigan
29+ years experience
Dickinson Wright PLLC
Updated:

Contact Information

500 Woodward Avenue, Suite 4000, Detroit, MI 48226-3425
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Bio

Phil DeRosier has nearly 20 years’ experience representing industry-leading corporations, banks, insurance companies, and individuals in the Michigan Supreme Court, Michigan Court of Appeals, and U.S. Courts of Appeals. Phil has briefed and argued a wide variety of appeals, ranging from commercial contracts to insurance to business torts. He also devotes a significant part of his practice to briefing dispositive motions and working with trial counsel on pre- and post-trial motions, jury instructions, and preserving issues for appeal.Phil is a past Chair of the Governing Council of the State Bar of Michigan’s Appellate Practice Section, and is consistently recognized in Best Lawyers and Michigan Super Lawyers in the area of appellate practice. Phil is co-chair of the Michigan Appellate Bench Bar Conference and a contributing author to the Institute for Continuing Legal Education’s Michigan Appellate Handbook. Before joining the firm, Phil served as a law clerk for former Michigan Supreme Court Chief Justice Robert P. Young, Jr., and was a staff attorney at the Michigan Court of Appeals. Phil DeRosier has nearly 20 years’ experience representing industry-leading corporations, banks, insurance companies, and individuals in the Michigan Supreme Court, Michigan Court of Appeals, and U.S. Courts of Appeals. Phil has briefed and argued a wide variety of appeals, ranging from commercial contracts to insurance to business torts. He also devotes a significant part of his practice to briefing dispositive motions and working with trial counsel on pre- and post-trial motions, jury instructions, and preserving issues for appeal.Phil is a past Chair of the Governing Council of the State Bar of Michigan’s Appellate Practice Section, and is consistently recognized in Best Lawyers and Michigan Super Lawyers in the area of appellate practice. Phil is co-chair of the Michigan Appellate Bench Bar Conference and a contributing author to the Institute for Continuing Legal Education’s Michigan Appellate Handbook. Before joining the firm, Phil served as a law clerk for former Michigan Supreme Court Chief Justice Robert P. Young, Jr., and was a staff attorney at the Michigan Court of Appeals. Phil DeRosier has nearly 20 years’ experience representing industry-leading corporations, banks, insurance companies, and individuals in the Michigan Supreme Court, Michigan Court of Appeals, and U.S. Courts of Appeals. Phil has briefed and argued a wide variety of appeals, ranging from commercial contracts to insurance to business torts. He also devotes a significant part of his practice to briefing dispositive motions and working with trial counsel on pre- and post-trial motions, jury instructions, and preserving issues for appeal. Phil is a past Chair of the Governing Council of the State Bar of Michigan’s Appellate Practice Section, and is consistently recognized in Best Lawyers and Michigan Super Lawyers in the area of appellate practice. Phil is co-chair of the Michigan Appellate Bench Bar Conference and a contributing author to the Institute for Continuing Legal Education’s Michigan Appellate Handbook. Before joining the firm, Phil served as a law clerk for former Michigan Supreme Court Chief Justice Robert P. Young, Jr., and was a staff attorney at the Michigan Court of Appeals.

Practice Areas

Appellate Practice

Awards & Recognition

  • Lawyer of the Year: Appellate Practice, Detroit (2026)
  • Lawyer of the Year: Appellate Practice, Detroit (2024)
  • Lawyer of the Year: Appellate Practice, Detroit (2021)
  • Lawyer of the Year: Appellate Practice, Detroit (2018)
  • Recognized: Appellate Practice
  • Thomas M. Cooley Law Review's Distinguished Brief Award, 2009

Recognized in Best Lawyers since 2012

Education

  • Western Michigan University, Thomas M. Cooley Law School, J.D., graduated 1996
  • Michigan State University, BA, graduated 1993

Reviews

B

Barbara Flores

2 weeks ago

A consummate appellate advocate who delivers results

When my business faced a complex appeal on a contractual dispute, Phil DeRosier was our clear choice. His deep understanding of Michigan appellate procedure, honed over nearly 30 years, was immediately evident. He meticulously deconstructed the lower court's ruling and crafted a compelling, persuasive brief for the Court of Appeals. His recognition as a multi-time 'Lawyer of the Year' is well-deserved. The outcome was decisively in our favor. Phil combines formidable expertise with a direct, reassuring manner that instills complete confidence.

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