David P. Mattern

John T. Bergin is a top attorney recognized by Best Lawyers in the practice area(s) of Mediation. John T., 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 John T. is held by other top lawyers in the same geographic and legal practice area.

Michelle D. Gambino is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Litigation - Banking and Finance and Litigation - Real Estate. Michelle D., who practices law in McLean, Virginia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michelle D. is held by other top lawyers in the same geographic and legal practice area.

Carolyn Grimes is a partner in the firm, practicing in all areas of family law including divorce, spousal support, child custody, child support, equitable distribution, retirement issues, and prenuptial agreements, among other areas. She practices in all of the Circuit and Juvenile and Domestic Relations Courts in Northern Virginia and has argued before the Court of Appeals. She has lectured on family law topics ranging from custody to retirement issues, including military, federal, civilian ...

Jacqueline Grise is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law. Jacqueline, who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jacqueline is held by other top lawyers in the same geographic and legal practice area.

Michael Suga has extensive experience representing contractors, subcontractors, developers, and design professionals in litigation concerning public and private construction projects and engineering services. Michael has represented clients in various state and federal courts and in ADR mediation and arbitration proceedings. Additionally, Michael has provided advice and representation to clients during contract negotiations and during project execution in order to protect and preserve client ...

Jeff represents every regulatory and transactional concern of equipment manufacturers and government contractors, as well as wireless, video and data providers, and end-users. He represents equipment manufacturers with respect to all applicable FCC regulations, including those governing importation, emissions compliance, equipment authorization/labeling, and marketing. Jeff has extensive experience in matters relating to experimental licensing for military, homeland security and other high-te...

Peter E. Ciferri is a top attorney recognized by Best Lawyers in the practice area(s) of Land Use and Zoning Law and Real Estate Law. Peter E., who practices law in Potomac, Maryland, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Peter E. is held by other top lawyers in the same geographic and legal practice area.

Laura Foote Reiff focuses her practice on business immigration laws and regulations affecting U.S. and foreign companies, as well as related employment compliance and legislative issues. Laura advises corporations on a variety of compliance-related issues, particularly related to Form I-9 alien employment verification matters. Laura has been involved in audits and internal investigations and has successfully minimized monetary exposure as well as civil and criminal liabilities on behalf of he...

Margaret is one of the four founding partners of Rock Creek Energy Group. She has over 18 years of experience counseling and representing a broad swath of electric industry participants on a wide range of federal energy regulatory and administrative litigation matters. She provides strategic counsel to investor-owned utilities, renewable and conventional generators, private equity and institutional investors, developers, and renewable energy providers on transactional, regulatory, and litigat...

Kevin P. O’Brien is a partner in the firm’s Employee Benefits and Executive Compensation practice. His practice has concentrated in employee compensation and benefits for over 30 years. Kevin is widely known as a leader in a wide variety of subjects, including innovative defined benefit plan design, flexible benefits, ERISA fiduciary matters and executive compensation. Before joining the firm, Kevin worked in the Pension and Welfare Benefits Administration at the Labor Department ...