Evan T. Leo

Anthony (Tony) Pavel guides clients through a comprehensive array of food and drug regulatory matters with his extensive knowledge of U.S. Food and Drug Administration (FDA) regulations related to food (including animal food and pet food), food additives and ingredients, dietary supplements, and cosmetics. In addition to FDA matters, Tony assists clients with issues related to the U.S. Federal Trade Commission (FTC), the U.S. Department of Agriculture (USDA), and other regulatory bodies aroun...

Jeffrey A. Kolender chairs the firm’s Estate Planning and Estate & Trust Administration practice groups. He concentrates primarily in those areas and also advises small businesses in tax business planning. A former chairman of the Estates and Trusts Section of the Montgomery County Bar Association, Mr. Kolender has participated as lecturer and co-author of outlines for several continuing legal education seminars regarding estate planning. His topics have included “Advising Cli...

Audrey Louison is a lawyer recognized by Best Lawyers in the practice area of Energy Law. Audrey practices law in Washington, District of Columbia Best Lawyers has recognized Audrey Louison since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Audrey Louison is held by other lawyers.

David's practice consists of counseling independent directors of open-end funds, closed-end funds, exchange-traded funds and business development companies, as well as the funds themselves and their investment advisers on matters relating to the Investment Company Act of 1940, the Investment Advisers Act of 1940, the Securities Act of 1933 and the Securities Exchange Act of 1934.

Michelle L. Butler provides counsel on government pricing, health care, and FDA law in the area of prescription drugs and biologics. Across these practice areas, she specializes in the interpretation of complex regulations. Ms. Butler advises clients on changes in health care law and how these changes affect calculation and reporting across government pricing programs, specifically the Medicaid Drug Rebate Program, the 340B Program, the Medicare Part B Average Sales Price calculation, and the...

For more than 15 years, Leigh has been helping families and individuals navigate matters that include divorce, custody, visitation, spousal support, child support, property division and protective orders. She represents clients throughout Northern Virginia in all aspects of domestic relations litigation. While litigation is a fundamental aspect of her practice, the majority of her cases settle outside of court. It is Leigh’s goal to help clients reach an agreement in the most efficient ...

Matthew D. Berkowitz is a lawyer recognized by Best Lawyers in the practice area of Mass Tort Litigation / Class Actions - Defendants. Matthew D. practices law in Washington, District of Columbia Best Lawyers has recognized Matthew D. Berkowitz since 2023. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Matthew D. Berkowitz is held by other lawyers.

Allyson Mullen provides counsel to medical device and in vitro diagnostic (IVD) manufacturers. Ms. Mullen assists clients with a wide range of pre and postmarket regulatory topics including developing regulatory strategy, preparing regulatory submissions, drafting regulatory policies and procedures, reviewing advertising and promotional materials, and addressing enforcement matters. In the premarket area, Ms. Mullen develops regulatory strategy, including obtaining breakthrough device designa...

Nigel L. Wilkinson is a lawyer recognized by Best Lawyers in the practice areas of Employment Law - Management and Litigation - Labor and Employment. Nigel L. practices law in Reston, Virginia Best Lawyers has recognized Nigel L. Wilkinson since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Nigel L. Wilkinson is held by other lawyers.

Kelvin J. Dowd is a lawyer recognized by Best Lawyers in the practice areas of Railroad Law and Transportation Law. Kelvin J. practices law in Washington, District of Columbia Best Lawyers has recognized Kelvin J. Dowd since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Kelvin J. Dowd is held by other lawyers.