Thomas A. "Tom" Clare

William C. Sjoberg is a top attorney recognized by Best Lawyers in the practice area(s) of International Trade and Finance Law. William C., 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 William C. is held by other top lawyers in the same geographic and legal practice area.

Andre Owens’ practice focuses on securities trading and markets activities. He counsels broker-dealers, securities exchanges, investment advisers and other clients on a variety of regulatory issues under the rules of the SEC, FINRA and various securities exchanges, including Regulation NMS; Regulation ATS; short sale regulation; sales practice rules, automated trading and risk controls and order handling matters. Mr. Owens also provides advice with respect to acquisitions of securities ...

Bill Christiansen specializes in biotechnology patent matters, with particular emphasis on U.S. and international patent procurement, strategic management of patent portfolios, investment due diligence, early stage company counseling and competitive patent position analysis. He received his B.S. in Biochemistry and Biophysics (with honors) from Oregon State University (1991). After obtaining a Ph.D. in Biochemistry/ Biophysics/Molecular Biology from the University of Notre Dame (1995), for wh...

Christopher Cole is a nationally-recognized litigator who offers strategic counsel to some of the world’s leading companies on protecting their technology and brands from attack by competitors, regulators and private consumer class action claimants. With a practice that covers a wide range of industries and sectors, Chris brings a practical, creative and individualized approach in advising clients on how to navigate advertising, unfair competition, brand disparagement, reputation and in...

David M. Perlman is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law and Oil and Gas Law. David M., who practices law in Washington, District of Columbia, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David M. is held by other top lawyers in the same geographic and legal practice area.

Sean A. Atkins is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Sean A., 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 Sean A. is held by other top lawyers in the same geographic and legal practice area.

J ane C. Bergner's practice encompasses a broad range of tax matters, including tax audit and controversy matters; tax collection disputes; innocent spouse issues; civil litigation at the trial and appellate levels; corporate, partnership, business and individual transactional tax planning; the representation of tax-exempt organizations; and estate, gift and wealth planning and probate. Jane is the author of Chapter 50, "Tax Court Jurisdiction, Procedure & Practice," included in the tax t...

Sharon Nelson Craig is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Sharon Nelson, who practices law in Bethesda, Maryland, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sharon Nelson is held by other top lawyers in the same geographic and legal practice area.

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 ...

Tina Papagiannopoulos is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Tina, 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 Tina is held by other top lawyers in the same geographic and legal practice area.