Jonathan L. Diesenhaus

Sondra Douglas is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Family Law Mediation. Sondra, who practices law in Rockville, Maryland, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sondra is held by other top lawyers in the same geographic and legal practice area.

Jeffrey L. Steiner is a top attorney recognized by Best Lawyers in the practice area(s) of Derivatives and Futures Law. Jeffrey L., who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey L. is held by other top lawyers in the same geographic and legal practice area.

Ellen Canan Grady is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Ellen Canan, who practices law in Tysons, Virginia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ellen Canan is held by other top lawyers in the same geographic and legal practice area.

Jeffrey A. Lamken is a top attorney recognized by Best Lawyers in the practice area(s) of Appellate Practice and Commercial Litigation. Jeffrey A., who practices law in Washington, District of Columbia, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey A. is held by other top lawyers in the same geographic and legal practice area.

Benjamin J. Trichilo is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Workers' Compensation Law - Employers. Benjamin J., who practices law in Fairfax, Virginia, has been recognized since 1995. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Benjamin J. is held by other top lawyers in the same geographic and legal practice area.

After serving as a law clerk for a Federal judge in Los Angeles, Mike began his career in tax controversy as a Trial Attorney with the Attorney General’s Honors Program at the Tax Division of the U.S. Department of Justice. After the Justice Department, Mike worked at a boutique tax firm in Washington, D.C., where he was elected partner in 2004. In this capacity he represented clients ranging from Fortune 100 companies to partnerships and individuals. Mike returned to government in 2005...

Anthony E. DiResta is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising Law. Anthony E., 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 Anthony E. is held by other top lawyers in the same geographic and legal practice area.

Barry Boss is co-chair of Cozen O’Connor’s Criminal Defense & Internal Investigations practice group, vice chair of the Commercial Litigation Department and office managing partner of the D.C. office. Prior to joining Cozen O’Connor in April 2004, Barry was an assistant federal public defender in Washington, D.C. Barry focuses his practice on complex criminal matters, particularly involving allegations of white-collar crime in federal court. Barry has extensive jury tria...

Seth B. Royster is a top attorney recognized by Best Lawyers in the practice area(s) of Elder Law and Trusts and Estates. Seth B., who practices law in Alexandria, Virginia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Seth B. is held by other top lawyers in the same geographic and legal practice area.

James E. Croker, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. James E., 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 James E. is held by other top lawyers in the same geographic and legal practice area.