John A. Gibbons

Hugh focuses his practice on business and intellectual property litigation. His business litigation practice focuses on complex financial transactions and commercial disputes across multiple sectors. His intellectual property litigation practice includes patent, trademark, copyright, and trade secret litigation in diverse technological areas across many industries. Hugh has more than two decades of experience utilizing his considerable knowledge to counsel clients in a wide variety of industr...

Ann D. Navaro is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Ann D., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ann D. is held by other top lawyers in the same geographic and legal practice area.

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

Joseph Guarino handles dispute resolution in the construction sector, including major claims relating to the development of energy facilities, hotel complexes and commercial buildings. His experience includes all aspects of contract drafting and negotiations, counseling on contract administration, claim preservation and avoidance, and dispute resolution and litigation within the construction industry. Joe's broad experience includes tunnels, power plants, high-rise buildings, hospitals, deten...

Christopher S. Rizek is a Member in Caplin & Drysdale's Washington, D.C., office. He also serves as General Counsel to the firm. In 2014, he was listed in the elite "Leading Lawyer" list for Tax Controversy by The Legal 500 . Services Mr. Rizek represents taxpayers in all types of federal civil and criminal tax controversy matters. He also guides clients through IRS audits, prepares administrative claims and protests of IRS actions, and litigates tax and tax-related cases in U.S. district...

Raymond (Ray) A. Jacobsen, Jr., advises clients on mergers, acquisitions and complex antitrust litigation. He has significant experience in the defense, medical devices, biotech, consumer product, energy and health care industries. Ray is the global head of McDermott’s Antitrust Practice and serves on the Management Committee. Read full biography: https://www.mwe.com/people/jacobsen-raymond-a/

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

Carson Sullivan is Chair of Paul Hastings’ Washington, D.C. Employment Law Department and Co-Chair of the Washington, D.C. office. She represents employers in all aspects of employment law, with an emphasis on the defense of class and collective action suits. As one of the leaders of the firm’s Pay Equity Practice Group, Ms. Sullivan provides sophisticated litigation defense and works with clients to review and analyze their compensation practices for pay equity and legal complian...

Christopher C. Muha is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Christopher C., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher C. is held by other top lawyers in the same geographic and legal practice area.

Elliott A. Milhollin is a top attorney recognized by Best Lawyers in the practice area(s) of Gaming Law and Native American Law. Elliott A., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elliott A. is held by other top lawyers in the same geographic and legal practice area.