Ann O'Brien
Recognized in Best Lawyers since 2027 About Ann O'Brien
Ann O'Brien is a lawyer based in Washington, DC and has been recognized in The Best Lawyers in America® since 2027. Ann O'Brien is recognized in the following practice area:
- Washington, District of Columbia
- Antitrust Law
Current Firm: Sheppard
Education: Northeastern University, J.D., graduated 1999, Northeastern University, J.D., graduated 1999, Northeastern University, J.D., graduated 1999, Northeastern University, J.D., graduated 1999, Northeastern University, J.D., graduated 1999, Northeastern University, J.D., graduated 1999, Northeastern University, J.D., graduated 1999, Northeastern University, J.D., graduated 1999, and Northeastern University, J.D., graduated 1999
Location: Washington, DC
Nearby Lawyers
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/
Jeffrey A. Lamken is a lawyer recognized by Best Lawyers in the practice areas of Appellate Practice, Bet-the-Company Litigation and Commercial Litigation. Jeffrey A. practices law in Washington, District of Columbia Best Lawyers has recognized Jeffrey A. Lamken since 2006. 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 Jeffrey A. Lamken is held by other l...
Chair of the firm’s top-ranked maritime and admiralty practice, Charlie is nationally recognized in major legal directories. Chambers USA ranks him as the only “Star Individual” in the category of “Transportation: Shipping/Maritime: Regulatory,” who is “the Dean of the maritime bar” and “the godfather of maritime law.” He is widely known for his experience with Jones Act laws and the U.S. offshore wind industry. Learn more about their prac...
Matt Reilly is a partner in the Washington, D.C., office of Kirkland & Ellis LLP. Matt’s practice focuses on a wide range of antitrust matters, including antitrust litigation, complex transactions and antitrust counseling and government investigations. Matt is frequently relied upon to obtain regulatory clearance for many of the toughest, high profile deals. Matt is a former assistant director of the Federal Trade Commission (FTC), Bureau of Competition. In this role, he served for ...
Tamara Killion is a lawyer recognized by Best Lawyers in the practice area of Employee Benefits (ERISA) Law. Tamara practices law in Washington, District of Columbia Best Lawyers has recognized Tamara Killion since 2027. 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 Tamara Killion is held by other lawyers.
Zachary W. Worshtil is a partner at Powers & Worshtil, P.C. in Upper Marlboro, Maryland, where he represents individuals and families in matters involving Litigation - Trusts and Estates , Trusts and Estates, estate administration , estate and trust litigation , and estate planning. He works closely with clients to address complex legal and financial issues while providing practical guidance throughout each stage of the process. A lifelong resident of Prince George’s County, Zach br...
Robert A. Dormer is one of three founding members of Hyman, Phelps & McNamara, P.C. He has been an integral part of the firm’s growth and expansion in all areas of FDA law. He advises clients on a wide range of issues throughout the product lifecycle including development and approval, compliance, and enforcement. From 1976 to 1979, Mr. Dormer served in FDA’s Office of Chief Counsel. He was an Associate Chief Counsel for Enforcement and Associate Chief Counsel for Radiological...
Explore and Learn
What AI Visibility Means for Lawyers
by Bryan Driscoll and Josh Rupall
AI tools increasingly interpret lawyers public information. Clear, consistent and credible sources help ensure they describe legal expertise accurately.
The Best Lawyers in Canada 2027: Recognizing the Nation's Top Legal Talent
by Jamilla Tabbara
Honoring established leaders and rising practitioners across Canada's legal profession.
2027 Best Lawyers Awards: Honoring Excellence in the Legal Profession
by Jamilla Tabbara
Recognizing the outstanding attorneys leading top practice areas nationwide.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.
Announcing the 2027 Best Lawyers Awards: Austria, Germany and Switzerland
by Jamilla Tabbara
Celebrating the legal professionals throughout Central Europe.
The Legal Teams Behind the Blake Lively–Justin Baldoni Settlement
by Grace Greer
A closer look at the legal teams and attorneys involved in the Blake Lively–Justin Baldoni litigation and its resolution.
The Best Lawyers in France 2027: Peer-Reviewed Excellence
by Jamilla Tabbara
Seventeen editions of peer trust, a growing profession and a dynamic legal market.
Rules on Gifting Money to Family: What to Know
by Bryan Driscoll
Generosity often runs ahead of paperwork. Here's how to give to loved ones without surprising the IRS, your estate plan or your relationships.
Who Can Override a Power of Attorney?
by Bryan Driscoll
A power of attorney carries real legal authority, but it isn't absolute. Here's who can step in to revoke, restrict or set it aside.
How to Get an Eviction Off Your Record
by Bryan Driscoll
Whether an eviction can be removed, sealed or corrected depends on your state, your case and where the record appears.
