M. Sean "Sean" Royall

R. J. Davis is a lawyer recognized by Best Lawyers in the practice area of Real Estate Law. R. J. practices law in Tysons, Virginia Best Lawyers has recognized R. J. Davis 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 R. J. Davis is held by other lawyers.

Denis C. Mitchell is an experienced trial attorney and focuses his practice on representing individuals and families who have suffered life-altering injuries or who have lost loved ones. He has obtained many multi-million dollar verdicts and recoveries for his clients, including the largest verdict in a medical negligence case in Anne Arundel County, Maryland. He has handled cases before multiple state and federal courts. Mr. Mitchell's fellow lawyers recognized him as D.C.’s Trial Lawy...

David M. Perlman is a lawyer recognized by Best Lawyers in the practice areas of Energy Law and Oil and Gas Law. David M. practices law in Washington, District of Columbia Best Lawyers has recognized David M. Perlman since 2021. 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 David M. Perlman is held by other lawyers.

Diana V. Vilmenay is a lawyer recognized by Best Lawyers in the practice area of Franchise Law. Diana V. practices law in Washington, District of Columbia Best Lawyers has recognized Diana V. Vilmenay 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 Diana V. Vilmenay is held by other lawyers.

Philip Katz is a lawyer recognized by Best Lawyers in the practice area of FDA Law. Philip practices law in Washington, District of Columbia Best Lawyers has recognized Philip Katz since 2015. 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 Philip Katz is held by other lawyers.

Gregory McGillivary is the managing partner of McGillivary Steele Elkin LLP. He has over 30 years of experience litigating, arbitrating, settling, and most importantly, winning multi-million-dollar cases on behalf of unions and individual workers who have been wrongly denied pay and benefits. He has represented tens of thousands of workers in a multitude of industries in both the public and private sector through all levels of the judiciary system and in arbitration. In addition to litigation...

Leslie J. Schneider is a partner in Ivins, Phillips & Barker's Washington office. His practice concentrates in accounting methods, the timing of revenue and expenses, the valuation of inventories, and capital v. expense issues. Mr. Schneider is most often recognized for his three-volume treatise, Federal Income Taxation of Inventories, published by Matthew-Bender. Mr. Schneider has developed a reputation as the premier attorney in the United States in the field of tax accounting and inven...

Paul E. Alpuche, Jr. is a lawyer recognized by Best Lawyers in the practice areas of Business Organizations (including LLCs and Partnerships), Closely Held Companies and Family Businesses Law and Tax Law. Paul E. practices law in Bethesda, Maryland Best Lawyers has recognized Paul E. Alpuche, Jr. since 2018. 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 P...

Ken Silverberg is an experienced tax attorney and former CPA-partner at Arthur Andersen & Co. He focuses on tax controversies, including tax audits, appeals and litigation against the IRS and state departments of taxation. He also represents numerous nonprofit organizations and NGOs in the health care, education and trade association sectors. What do you focus on? Tax Controversy Practice I help clients resolve their IRS and state tax problems as quickly and inexpensively as possible. Mos...

Mark J. Plumer is a lawyer recognized by Best Lawyers in the practice area of Insurance Law. Mark J. practices law in Washington, District of Columbia Best Lawyers has recognized Mark J. Plumer 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 Mark J. Plumer is held by other lawyers.