J. Mark "Mark" Gidley
About J. Mark Gidley
J. Mark Gidley is a lawyer based in Washington, DC and has been recognized in The Best Lawyers in America® since 2010. J. Mark Gidley is recognized in the following practice area:
- Washington, District of Columbia
- Antitrust Law
Current Firm: White & Case LLP
Education: Columbia University, J.D., graduated 1986 and University of Kansas, BS
Location: Washington, DC
Nearby Lawyers
Elizabeth Thomas Dold’s practice focuses on the Internal Revenue Code and related compensation matters, including employment taxes and other reporting and withholding requirements. She covers all types of employee benefits, including qualified plans, IRAs, governmental plans, nonqualified deferred compensation plans, and health and welfare plans. She assists clients in all tax-related aspects of employee benefits including Internal Revenue Service (IRS) filings, compliance audits, desig...
Nader Salehi is a partner in the Government, Regulatory and Internal Investigations Practice Group in the Washington, D.C., office of Kirkland & Ellis LLP. Nader represents clients in high-profile and complex internal and government investigations, and has regularly counseled investment banks, fund managers and public companies in matters of enterprise-wide significance. He has led numerous clients through their most significant matters involving the Securities and Exchange Commission (SE...
J. Mark Poerio is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. J. Mark, who practices law in Washington, District of Columbia, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which J. Mark is held by other top lawyers in the same geographic and legal practice area.
Mark A. Grider is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Mark A., who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark A. is held by other top lawyers in the same geographic and legal practice area.
Mike Prame is seasoned trial attorney and counselor, with over two decades of experience representing clients in matters related to retirement and healthcare plans. His clientele is largely based in three primary sectors. First, he counsels businesses with underfunded defined benefit pension plans, particularly those plans under scrutiny by the PBGC. Second, Mike advises actuarial, benefit/investment consulting and recordkeeping firms that provide services in connection with retirement and he...
Mr. Fox is the managing partner of Ivins, Phillips & Barker. He was named in 2012 by the Washingtonian Magazine for the fourth straight year as one of the outstanding tax lawyers in Washington, D.C., in the Washington Post Magazine's list of Super Lawyers for the third straight year, and has been named in Best Lawyers in America in each of the last ten consecutive years. Although, during his 47 years with the firm, Mr. Fox devoted a substantial portion of his activities to international a...
Peter J. Petesch handles a wide range of labor and employment matters, including litigation under: The Railway Labor Act The Americans With Disabilities Act The Family and Medical Leave Act Title VII The Age Discrimination in Employment Act Sarbanes-Oxley AIR 21 – the Wendell H. Ford Aviation Investment and Reform Act for the 21st Century He has successfully defended employers in individual and class-based cases before federal and state courts and agencies such as the Equal Employment O...
David T. Dekker is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law and Litigation - Construction. David T., who practices law in Washington, District of Columbia, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David T. is held by other top lawyers in the same geographic and legal practice area.
Neil Eggleston is a litigation partner in the Washington, D.C., office of Kirkland & Ellis LLP. Neil has a distinguished record of public service, and has held a number of senior government roles. He was White House Counsel to President Obama from 2014 to 2017, and advised the president on all legal and constitutional issues across a broad spectrum of domestic and foreign policy matters. Neil’s practice focuses on enforcement defense including at the U.S. Department of Justice (DOJ)...
Explore and Learn
2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States
by Jamilla Tabbara
The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.
Gun Rights for Convicted Felons? The DOJ Says It's Time.
by Bryan Driscoll
It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
How to Choose a Good Lawyer: Tips, Traits and Questions to Ask
by Laurie Villanueva
A Practical Guide for Your First-Time Hiring a Lawyer
Reddit’s Lawsuit Could Change How Much AI Knows About You
by Justin Smulison
Big AI is battling for its future—your data’s at stake.
Common-Law Marriage in Indiana: Are You Legally Protected?
by Laurie Villanueva
Understanding cohabitation rights and common-law marriage recognition in Indiana.
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.