Brendan O'Regan

Judyann M. Lee is a top attorney recognized by Best Lawyers in the practice area(s) of Community Association Law and Real Estate Law. Judyann M., who practices law in Potomac, Maryland, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Judyann M. is held by other top lawyers in the same geographic and legal practice area.

Adrian L. Bastianelli, III is Of Counsel at Peckar & Abramson PC , based in Washington, District of Columbia. Following a lengthy career representing participants across the construction industry in claims and litigation, while also serving as an ADR neutral, he has transitioned his practice to focus exclusively on neutral services. His work includes serving as an arbitrator, mediator, dispute review board (DRB) member, and in other roles involving arbitration and mediation. Adrian previo...

W. Todd Baker is an IP litigation partner in the Washington, D.C., office of Kirkland & Ellis LLP. Todd is experienced handling post-grant matters at the USPTO including all aspects of IPR proceedings at the USPTO's Patent Trial and Appeal Board (PTAB). He advises clients on issues of patentability, derivation, inventorship and priority related to post grant matters before the PTAB as a supplement or an alternative to traditional litigation-based patent validity challenges. Todd litigates...

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...

Sean P. Kelly has practiced exclusively in the area of family law and divorce for his entire career as a lawyer, which began in 1994. Having "grown up" in the field, Sean has extensive litigation experience and a significant knowledge and understanding of the law. One benefit of his years of litigation experience is that it affords a seasoned trial lawyer like Sean many more opportunities to achieve fair and equitable settlements for his clients. His substantial trial experience, coupled with...

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

Leon B. Greenfield has an exceptionally wide breadth of experience representing clients in complex antitrust-related matters. He has represented clients in cutting edge Section 2 litigation and agency matters. He has secured antitrust clearance for major acquisitions, litigated cases in federal and state court and counseled clients on many types of antitrust issues. Mr. Greenfield also has broad experience in matters outside the antitrust area, including securities regulatory matters and liti...

Keri McWilliams is a co-leader of the Franchise & Distribution team. She represents start-ups and mid-size companies across numerous industries, including restaurants, retailers, fitness centers, health concepts, and luxury brands, in all aspects of their corporate relationships. Keri is also a member of the Health and Wellness initiative, and the Food, Beverage and Agribusiness team. What do you focus on? Franchising I represent franchise systems ranging from 3 units to more than 1000 un...

James J. Plunkett is a top attorney recognized by Best Lawyers in the practice area(s) of Labor Law - Management. James J., 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 James J. is held by other top lawyers in the same geographic and legal practice area.

Michael J. Murphy is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Michael J., who practices law in Washington, District of Columbia, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael J. is held by other top lawyers in the same geographic and legal practice area.