Jim Dittmar is a retired partner in Goodwin's Litigation Department, where he focuses his practice on complex business litigation with particular emphasis on securities litigation; civil litigation and regulatory investigations and enforcement proceedings involving asset management and other capital markets financial services; civil litigation and regulatory investigations and enforcement proceedings under ERISA; and corporate transaction, control and governance disputes. His practice concentrates on class actions, derivative actions, and multi-proceeding litigations including federal multi-district litigation and simultaneous federal and state court actions.

Professional Activities

Mr. Dittmar is a member of the American, Massachusetts and Boston Bar Associations, and is a past chair of the Litigation Section of the Boston Bar Association.

Professional Experience

Prior to joining Goodwin, Mr. Dittmar was a shareholder and Litigation Department Chair at the law firm of Hutchins, Wheeler & Dittmar.


Mr. Dittmar has been selected for inclusion in Chambers USA: America’s Leading Lawyers for Business, U.S. News-Best Lawyers and The Legal 500 U.S. He was also nominated for the “Independent Counsel of the Year” award by Fund Director Intelligence, an Institutional Investor publication.





Representative Matters




Mr. Dittmar represents financial service fiduciaries, issuers of securities, directors, officers and trustees, investment advisers, investment banks, broker dealers, and professionals such as lawyers and consultants. In the current legal environment, he represents investment advisers, investment companies and investment company directors and trustees in litigation and in regulatory investigations and enforcement proceedings involving market timing; challenges to fiduciary fees; challenges to mutual fund distribution practices; charges of fraud, breach of fiduciary duty and failure to supervise under securities laws; and disputes arising out of business transactions involving investment fiduciaries. In the current legal environment, a substantial portion of Mr. Dittmar’s practice also entails representation of ERISA plan service providers in civil litigation and regulatory investigations relating to the discharge of fiduciary duties.

Mr. Dittmar has tried numerous cases in federal and state courts and in arbitration and administrative proceedings. He has tried cases involving claims by and against investment fiduciaries; claims under securities laws; claims concerning ownership and control of business organizations; claims based upon contractual and fiduciary obligations arising out of corporate office, partnership and joint venture arrangements; claims seeking compensation of business brokers and finders; and claims arising from business transactions.

In addition to his focus on securities, capital markets and financial services lawsuits, Mr. Dittmar has a highly diverse litigation practice. He has litigated intellectual property rights, including patent infringement, trade secret, copyright and trademark claims involving such industries as medical devices, software, wireless telephone service, fluid purification and publishing. In addition, he has litigated claims under both federal and state antitrust laws and state consumer protection and unfair business practice laws. His trial practice has also included commercial disputes, environmental claims, employment relations and restrictive covenant disputes, and personal actions under wrongful death, competency and civil rights laws.

In addition, Mr. Dittmar handles special counsel engagements, advising corporate directors in cases involving internal investigations, settlement of claims against corporate affiliates, interested party transactions, critical personnel actions and extraordinary transactions in corporate organization or assets.






J.D., 1972
Harvard Law School

(cum laude)

M.S., 1967
The London School of Economics and Political Science
B.A., 1966
Amherst College

(magna cum laude, Phi Beta Kappa)


1972 to 1973 U.S. District Court for the Eastern District of New York, Honorable John F. Dooling, Jr.





U.S. Supreme Court
Massachusetts Supreme Judicial Court
U.S. Court of Appeals for the First Circuit
U.S. Court of Appeals for the Second Circuit
U.S. Court of Appeals for the Third Circuit
U.S. Court of Appeals for the Tenth Circuit
U.S. District Court for the District of Massachusetts
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Our clients rely on us for world-class advisory services, counsel on complex transactional work and high-stakes litigation. Specializing in matters involving the financial, life sciences, private equity, real estate, and technology industries, we use a collaborative, cross-disciplinary approach to resolve our clients’ most challenging issues. To find out more, please contact us.


Nos équipes interviennent aux côtés de nos clients, industriels, fonds d’investissement, startups, institutions financières et dirigeants, dans le cadre de transactions et de contentieux complexes, et apportent des conseils de tout premier plan dans les secteurs financiers, des Sciences de la Vie, du Private Equity, de l’immobilier et des technologies. Nous traitons les dossiers juridiques de manière intègre, ingénieuse, souple et audacieuse pour répondre efficacement aux enjeux propres à chacun de nos clients, quels que soient la taille de l’opération et le secteur d’activité. Pour en savoir plus, contactez-nous.

Unsere Kunden verlassen sich auf unsere erstklassige Beratung, vor allem im Hinblick auf komplexe Transaktionen und High-Stakes-Prozesse. Spezialisiert auf Angelegenheiten der Finanz-, Life-Sciences-, Private-Equity-, Immobilien-und Technologie-Branchen, verwenden wir einen kooperativen und interdisziplinären Ansatz, um Fragen unserer Kunden auch in extremen Spezialsituationen einer Lösung zuzuführen. Sie wollen mehr erfahren? Kontaktieren Sie uns gerne.