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Feigin comes to the firm from Crowell & Moring, where he chaired the Corporate and Israel practices.
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Established in April 2001, the firm's Washington, D.C., office is located in a Leed Platinum building on the northern edge of the downtown business district near the vibrant Dupont Circle neighborhood.
Our Washington, D.C., office offers a wide range of legal services in matters involving litigation, intellectual property, regulations, investigations, policy work, and transactions. Our Washington-based attorneys have years of experience representing U.S. and international clients in matters involving Antitrust, Utility & Energy, Transportation & Trade, Government Contracts, Construction, Intellectual Property, International Arbitration, Securities, White Collar Defense & Investigations, Real Estate, Health Care, and State Attorneys General. We have handled litigation matters in both federal and state courts and have successfully tried dozens of cases. Our lawyers regularly represent firm clients before executive branch and regulatory agencies, as well as the Congress. Many of our attorneys have been published and have presented to industry, bar and trade groups on topics related to the office’s practice areas.
April 22, 2025
Feigin comes to the firm from Crowell & Moring, where he chaired the Corporate and Israel practices.
March 26, 2025
Josephine Bahn was featured in a Girl Power Talk article discussing her journey in the legal industry.
March 26, 2025
Eric Leonard, co-chair of the firm’s Government Contracts practice, was interviewed in a Law360 article discussing what the rescission of Executive Order 14026 means for contractors and their wage obligations.
March 20, 2025
“It’s always a pleasure to recognize the hard work and dedication of our attorneys and government relations professionals,” said Executive Chairman and Chief Executive Officer Michael J. Heller. “This outstanding class of new members and senior principals will undoubtedly propel Cozen O’Connor’s ongoing success.”
March 19, 2025
Eric Leonard, co-chair of the firm’s Government Contracts practice, was quoted in a Law360 article discussing President Donald Trump’s recission of Joe Biden’s Executive Order 14026, which increases the federal wage for federal contract workers.
March 04, 2025
Jonathan Grossman was quoted in a Capital Forum article discussing the past leadership of the FTC’s reminder to the antitrust bar that an HSR filing cannot be made on a hypothetical deal.
February 21, 2025
Josephine Bahn, an associate in the firm’s Commercial Litigation Department, has been selected as one of The Daily Record’s 2025 Leaders in Law honorees in the Leadership in Law category.
January 23, 2025
Eric Leonard, co-chair of the firm’s Government Contracts practice, was quoted in a Law360 article discussing President Donald Trump’s executive order to revoke an Equal Employment Opportunity executive order and mandate that DEI requirements be removed from federal procurement programs.
January 01, 2025
Eric Leonard, co-chair of the firm’s Government Contracts practice, was quoted in a Law360 article discussing the Associated Builders and Contractors Inc.’s (ABC) challenge to a U.S. Department of Labor regulation changing how prevailing wages paid under federally funded construction projects are calculated under the Davis-Bacon Act.
December 23, 2024
Eric Leonard, co-chair of the firm’s Government Contracts practice, was quoted in a Law360 article discussing the Centers for Medicare & Medicaid Services’ attempt to resolicit Maximus Federal Services Inc.’s deal to insert an LHA clause.
December 11, 2024
Josh Stein, a member of the firm’s Transportation & Trade Practice, has been appointed vice chair of the International Transportation Committee of the American Bar Association International Law Section.
December 11, 2024
Patrick Rizzi, a member of the firm’s Transportation & Trade Practice, has been recognized by Lexology as a 2025 Client Choice Awards winner in the transport category.
November 08, 2024
Kathryn Sobotta was featured in a Law360 article discussing Cozen O’Connor’s veteran attorney resource group and her experience in the military.
November 07, 2024
Lexology Index has named Susan A. Grueneberg, a member of Cozen O’Connor’s Franchising Practice, and David Heffernan, chair of the firm’s Transportation & Trade Group, to its Thought Leaders Global Elite 2025 list.
November 07, 2024
In 2024, Best Lawyers received more than 100,000 client references and observed a 65% increase in client participation in their survey.
October 15, 2024
Following his unanimous re-election to CEO, Michael Heller spoke with Law360 Pulse about the successes and challenges of the last three years and his priorities for the next three.
October 11, 2024
Eric Leonard, co-chair of the firm’s Government Contracts practice, was quoted in a Law360 article discussing a challenge to a 2021 U.S. Department of Labor rule raising the minimum wage for federal contract workers and President Biden’s executive order regarding the rulemaking.
September 05, 2024
Cozen O’Connor is pleased to announce that the firm’s Corporate Practice has been selected by The American Lawyer as a 2024 Best Corporate Practice of the Year finalist for 2024.
August 23, 2024
Lynnette Espy-Williams, Chief Diversity, Equity & Inclusion Officer and member of the firm’s Commercial Litigation Department, has been named one of the 2024 Most Influential Black Lawyers in Corporate America by Savoy Magazine.
August 15, 2024
Best Lawyers selected 242 Cozen O’Connor lawyers from 24 of the firm’s U.S. offices for inclusion in the 2025 edition of The Best Lawyers in America and Best Lawyers: Ones to Watch in America.
August 09, 2024
Jeff Vogel was quoted in a SeatradeMaritime News article discussing the impact the United States Supreme Court decision in Loper Bright may have on the Federal Maritime Commission.
July 22, 2024
Eric Leonard was quoted in a Law360 article discussing the Texas federal court’s decision in Associated General Contractors of America et al. v. U.S. Department of Labor et al., which resulted in issuing a nationwide preliminary injunction blocking parts of the Davis-Bacon Act regulation that governs prevailing wages for publicly funded construction projects over $2,000.
July 12, 2024
Frank Abramonte, Thomas Fisher, James Gale, Shane Hardy, Hugh Marbury, and Camille Miller were named IP Stars by Managing Intellectual Property. Abramonte, Fisher, Gale, and Marbury were named Patent Stars.
July 02, 2024
The firm is moving from its current space on 19 Street NW to 2001 M Street NW. The space was previously occupied by Orrick.
June 21, 2024
Josephine Bahn was a guest on the National Association of Women Lawyers (NAWL) podcast to discuss her role in the voting rights case Nairne v. Ardoin.
June 13, 2024
IAM Patent 1000 has named Frank Abramonte, Blake Coblentz, Thomas Fisher, Keith Fredlake, Jeffrey Gendzwill, Barry Golob, and Edward Weisz to their 2024 list.
June 10, 2024
Chambers USA rankings are based on an “assessment of a firm’s work and opinions from external market sources, with an emphasis on client feedback.” In order to be ranked in the guide, lawyers and firms must demonstrate “sustained excellence.”
April 30, 2024
Lawrence Prosen was quoted in a Construction Dive article discussing the DOT’s new final rule for its Disadvantaged Business Enterprise workforce participation plan, which refines and specifies numerous aspects of the plan.
April 30, 2024
Eric Leonard, co-chair of the firm’s Government Contracts practice, has been elected to the George Washington Law Alumni Association (GWLAA) Board of Directors.
April 26, 2024
The Women’s Executive Network has named Lynneette Espy-Williams as a recipient of the 2024 Canadian Equity, Diversity, and Inclusion (CEDI) Awards.
April 15, 2024
Hugh Marbury, co-chair of the firm’s Copyright Practice, has been named to the Board of Directors of the Eudowood Foundation at Johns Hopkins.
April 02, 2024
Tamara Hinton, who will lead Cozen O'Connor Public Strategies' Strategic Communications practice joins as senior principal and will be based in Washington, D.C.
March 27, 2024
Cozen O’Connor is pleased to announce that Elizabeth Olivera, Lawrence Prosen, and Frances Rayer have been selected as top authors for JD Supra’s 2024 Readers’ Choice Awards for their thought leadership on key topics during 2023. Additionally, David Adams and Scott Bettridge were recognized for authoring a top-read article on immigration.
March 15, 2024
“This is a group of terrific lawyers across many offices and practices areas and we look forward to following their achievements,” said Executive Chairman and Chief Executive Officer Michael J. Heller.
March 11, 2024
Hugh Marbury is celebrating his 15th year since being elected to the American Law Institute.
March 04, 2024
Foster — who spent the past four years serving as legislative director and deputy chief of staff for Senator Peter Welch (D-Vt.) — joins as a senior principal and will reside in the Washington, D.C., office.
February 21, 2024
Eric Leonard was quoted in a Law360 article discussing the Federal Acquisition Regulatory Council’s proposed rule to require federal contractors to disclose pay ranges in job ads.
February 15, 2024
The firm announced several new practice group chairs, office managing partners, and leaders of firm committees and initiatives
February 12, 2024
Patrick Rizzi was featured in a Law360 article discussing his transition to Cozen O’Connor.
February 07, 2024
Rose Christ, C. Towner French, and Joseph Hill were promoted to managing director, effective January 1, 2024.
February 05, 2024
Eric Leonard was featured in a Law360 article discussing his practice and transition to Cozen O’Connor.
January 16, 2024
Cozen O'Connor Public Strategies (CPS) today welcomed veteran health care staffer Rick Van Buren, who is recognized as a leading authority on Medicaid and other national health care programs.
December 01, 2023
Cozen O’Connor is pleased to announce that David Heffernan, chair of the firm’s Transportation & Trade Group, Jeffrey F. Lawrence, co-chair of the firm’s International Practice, and Jonathon Foglia, member of the firm’s Transportation & Trade Group, have been selected to Who’s Who Legal: Transport 2024.
November 14, 2023
Lynnette Espy-Williams, Chief Diversity, Equity & Inclusion Officer and member of the firm’s Commercial Litigation Department, joined Yasmin Zand on the “CMO Series Represents” podcast.
November 10, 2023
Lawrence Prosen was quoted in a Law360 article discussing responding to prevailing wage surveys.
November 03, 2023
Lynnette Espy-Williams, Chief Diversity, Equity & Inclusion Officer and member of the firm’s Commercial Litigation Department, has been named one of the Top 10 Most Influential Women in Diversity & Inclusion by The Chief Navigators Magazine.
September 21, 2023
Veteran regulatory lawyer and litigator Charles A. Zdebski has joined the firm's Washington, D.C. Office.
September 20, 2023
Stephen Seeger, a member of the firm’s Construction Law Group, has been named a Fellow of the American College of Construction Lawyers (ACCL).
September 19, 2023
Hugh Marbury, co-chair of Cozen O'Connor’s Copyright Practice and resident in the firm’s Washington, D.C. office, has been named to the Board of Advisors for the Common Crawl Foundation.
August 21, 2023
James Billings-Kang, a member of Cozen O'Connor's Health Care & Life Sciences Practice, has been named a fellow of the American Bar Foundation.
August 17, 2023
Best Lawyers selected 230 Cozen O’Connor lawyers from 24 of the firm’s U.S. offices for inclusion in the 2024 edition of The Best Lawyers in America.
August 16, 2023
Lawrence Prosen was quoted in a Law360 article discussing the confusion and outstanding questions about the interplay between the Davis Bacon Act and the Inflation Reduction Act.
August 10, 2023
Lawrence Prosen was quoted in a Law360 article discussing the Davis-Bacon Act, a new U.S. Department of Labor Rulemaking that allows prevailing wages on federally funded construction projects.
August 08, 2023
IAM Patent 1000 has named Frank Abramonte, Thomas Fisher, Keith Fredlake, Jeffrey Gendzwill, and Edward Weisz to their 2023 list.
July 28, 2023
These lists recognize lawyers “mastering,” “leading,” “revolutionizing,” and “dominating” their fields in their respective states and nationwide.
July 21, 2023
Josephine Bahn, an associate in the firm’s Construction Law Group, has been reelected by the D.C. Bar as their Under 36 representative to the American Bar Association House of Delegates.
July 19, 2023
Jonathon Foglia, a member of the firm’s Transportation and Trade Group, has been named a fellow of the American Bar Foundation.
July 10, 2023
Cozen O'Connor's Aviation (Litigation/Regulation), Construction, L&E, M&A (Midmarket), Shipping (Finance and Litigation/Regulation) practices were ranked by the Legal 500.
July 10, 2023
Josephine Bahn was quoted in a Bloomberg article discussing the Supreme Court’s decision to reject President Joe Biden’s student loan forgiveness program. This decision disappointed many law students and early career attorneys who have taken out student loans to pay for their education.
July 06, 2023
Josephine Bahn was quoted in a Law360 article discussing how some firms have adjusted to evolving industry standards.
July 06, 2023
Josephine Bahn was featured in an American Bar Association Litigation Section Alumni Spotlight.
May 11, 2023
Lawrence Prosen was quoted in an article published by Law360 that discusses the environmental variables and cost pressures of carbon-capturing concrete.
October 11, 2022
Michael Klein provides an update on a few of the many lawsuits impacting the water sector that are the result of PFAS and PFOA levels in rainwater often exceeding the EPA’s Michael’s article in The Water News Source analyzes lawsuits similar to the suit filed by the Municipal Water Authority of Westmoreland County.
September 07, 2022
Micah S. Myers, former senior associate general counsel at the Office of the U.S. Trade Representative (USTR), has joined its growing Washington, D.C. office as a member.
August 22, 2022
210 Cozen O’Connor lawyers from 24 of the firm’s nationwide offices for inclusion in the 2023 edition of The Best Lawyers in America.
August 05, 2022
Gary Gassman and Josephine Bahn, have been installed in ABA Chair Roles.
March 31, 2022
Cozen O’Connor is pleased to announce that Josephine Bahn, an associate in the firm’s Commercial Litigation Department, has been selected to the Daily Record’s Maryland Top 100 Women List.
March 02, 2022
Cozen O’Connor is pleased to announce that Lynnette Espy-Williams, member of the firm’s Commercial Litigation Department and chief culture officer, has been named by Savoy Magazine as one of the 2022 Most Influential Black Lawyers.
February 25, 2022
Cozen O’Connor is pleased to announce that Matthew Howell, an associate in the firm’s Transportation & Trade Group, has been appointed by the Young Lawyers Division of the American Bar Association (ABA) to serve as an adviser to the National Conference of Commissioners on Uniform State Laws (ULC) Study Committee on Antitrust.
February 10, 2022
Smith spent eight years in public service in both the U.S. Senate and U.S. House of Representatives, having advised Senator John Cornyn (Texas), who was then the majority whip, the second-highest-ranking lawmaker in Senate Republican leadership.
December 02, 2021
Cozen O’Connor is pleased to announce that Patrick Martin and Towner French, respectively managing director and senior principal at the firm’s Public Strategies group, have been named to The Hill’s 2021 Top Lobbyists: Hired Guns list.
November 09, 2021
Cozen O’Connor’s White Collar Defense & Investigations practice group was named to the GIR 100 list for the sixth year in a row.
November 08, 2021
James will advise the firm’s health care clients in connection with litigation matters arising from provider-payor disputes, False Claims Act matters, private equity transactions, and merger activity, in addition to other complex commercial litigation issues.
October 18, 2021
Barry Boss, co-chair of the firm’s White Collar Defense & Investigations Group and co-chair, of the firm’s Commercial Litigation Department, has been named a 2021 South Trailblazer by The American Lawyer.
June 01, 2021
He brings extensive experience counseling aviation industry clients on a wide range of regulatory and commercial matters.
May 05, 2021
Super Lawyers has named 12 Cozen O'Connor attorneys to its 2021 Washington, D.C., Super Lawyers and Rising Stars list.
March 25, 2021
Sullivan will be joining the Washington, D.C., office as a member of the Labor & Employment Department and as co-chair of the OSHA-Workplace Safety Practice Group.
March 01, 2021
Prosen brings a distinguished resume that includes experience in all aspects of government contracts, from regulatory compliance to claims and bid protest litigation. Joining with Prosen are two associates Benjamin L. Williams and Caitlin E. Trevillyan.
February 24, 2021
Cozen O’Connor is pleased to announce that Lynnette Espy-Williams, the firm’s Chief Culture Officer, has been named a 2021 Diversity in Business Honoree.
December 11, 2020
Cozen O’Connor is pleased to announce that Patrick Martin, principal and director of the firm’s Public Strategies group in the Midwest, has been named to The Hill’s Top Lobbyists: Hired Guns list.
November 02, 2020
Shire brings a deep understanding of federal and state health care regulations and has been instrumental in several of the most well-known transactions in the health care space.
October 22, 2020
Cozen O’Connor is pleased to announce that Jesse Keene, member of the firm’s Commercial Litigation Department, has been named a fellow of the Construction Lawyers Society of America. The