Brendan O'Regan

Mr. Robbins is an experienced energy attorney based in Washington, District of Columbia. At Washington Energy Law LLP, he provides comprehensive legal services in Energy Law and Energy Regulatory Law, particularly focusing on electric resources, transmission management, and regulatory affairs. His clients include municipal joint action agencies, generation and transmission cooperatives, state regulatory commissions, individual municipal and cooperative electric systems, larger end-users, and ...

Andrew B. Kolesar III is a top attorney recognized by Best Lawyers in the practice area(s) of Railroad Law and Transportation Law. Andrew B., who practices law in Washington, District of Columbia, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew B. is held by other top lawyers in the same geographic and legal practice area.

Carmine R. Zarlenga is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising Law. Carmine R., who practices law in Washington, District of Columbia, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carmine R. is held by other top lawyers in the same geographic and legal practice area.

Joel Swearingen is an associate in the firm’s Project Finance and Public Finance practice group, representing issuers, underwriters, and borrowers on a variety of public finance transactions. He also has substantial experience in the field of tax withholding and information reporting, both internationally and domestically. What do you focus on? My practice includes representing clients on tax matters present in connection with public finance transactions. I also advise clients on the in...

Nat P. Calamis is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Nat P., 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 Nat P. is held by other top lawyers in the same geographic and legal practice area.

Joel R. Grosberg is co-head of McDermott’s Antitrust Mergers Focus Group and assists clients on civil and criminal antitrust matters, including obtaining merger clearances, counseling and litigation. He has represented clients in obtaining antitrust approvals in numerous challenging transactions, and in other government antitrust investigations before the Department of Justice, the Federal Trade Commission (“FTC”) and foreign competition authorities. Joel has significant exp...

Jon B. Jacobs is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law. Jon B., who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jon B. is held by other top lawyers in the same geographic and legal practice area.

Paul J. Maloney is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Defendants, Personal Injury Litigation - Defendants and Professional Malpractice Law - Defendants. Paul J., who practices law in Washington, District of Columbia, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul J. is held by other top lawyers in the same geographic and legal practi...

Jeff Witt is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Jeff, who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeff is held by other top lawyers in the same geographic and legal practice area.

Robert C. MacKichan Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Real Estate and Real Estate Law. Robert C., who practices law in Washington, District of Columbia, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert C. is held by other top lawyers in the same geographic and legal practice area.