Founding partner · Trial counsel

Jeffrey A. Denner

Founder and partner of Denner Lamanna—for over fifty years, complex and often high-profile representation of individuals and organizations across the United States and internationally, including selected civil matters for victims of government civil-rights violations.

  • Yale College
  • Harvard Law School
  • Spanish
Portrait of Jeffrey A. Denner

Professional biography

Attorney Jeffrey A. Denner is a founder and partner of Denner Lamanna. For over 50 years, Mr. Denner has concentrated his practice in the defense of complex, often high profile cases on behalf of individuals and organizations throughout both the United States and internationally. He also involves himself in selected civil cases, particularly for individuals whose civil rights have been violated by the Government.

50+Years in practice
35+State & federal jurisdictions
Trial & appealState & federal courts
GlobalLitigation in four continents

Mr. Denner’s practice encompasses both trials and appeals in the state and federal court systems as well as before administrative (licensing, regulatory and disciplinary) boards and agencies. His legal representation commences at the investigative, pre-indictment/pre-charging stage and carries through to appeal, post-conviction, and parole/pre-release, as applicable.

A graduate of Yale College and Harvard Law School, Mr. Denner has been a partner in several larger Boston law firms during his approximately 35-year career. He and many of his cases have been profiled in local and national television shows, newspaper accounts, and magazine articles. He has also been a legal commentator for various local and national television shows. Mr. Denner is admitted to practice in the Commonwealth of Massachusetts, the (federal) United States District Court for Massachusetts, the (federal) First Circuit Court of Appeals, the United States Court of Military Appeals, the United States Claims Court, the United States Tax Court, and the United States Supreme Court. He has also litigated cases in approximately 35–40 state and federal jurisdictions at the trial or appellate levels in the United States, as well as in Canada, Asia, Central America, and Western Europe.

Mr. Denner is a member of the Massachusetts Bar Association, the National Association of Criminal Defense Attorneys, and the Massachusetts Association of Criminal Defense Attorneys. He is a former clinical Teaching Fellow at the Harvard Law School. He truly has made a motto of the National Association of Criminal Defense Attorneys—that “the Criminal Defense Lawyer is the last bastion of freedom in this country,” into a central theme of his own practice and life.

Jeffrey Denner combines his extraordinary training, experience and ability with a compassion and commitment to excellence which, assisted by his partners, associates and forensic expert resources, places clients into the best position to successfully resolve their problems. Mr. Denner also communicates frequently with his clients, as he strongly believes that such interaction is necessary to obtain the best results.

Mr. Denner can be reached 24 hours daily, 7 days per week at (866) 370-5422 or (617) 500-4398 to address your legal problems whatever, and wherever, they may be.

Complex defense Civil rights Trials & appeals Administrative & licensing International matters

Bar admissions & education

Bar admissions

  • Massachusetts
  • U.S. District Court District of Massachusetts
  • U.S. Court of Appeals 1st Circuit
  • U.S. Army Court of Criminal Appeals
  • U.S. Court of Federal Claims
  • U.S. Supreme Court
  • U.S. Tax Court

Education

Harvard Law School, Cambridge, Massachusetts
J.D. — 1973

Yale University
B.A. — 1969

Representative cases

Reported and cited matters are offered for context only; they do not predict future results.

  • McIntyre v. U.S., 254 F. Supp. 2d 183 (D. Mass. 2003)
  • U.S. v. Rodriguez, 53 F.3d 327, 1995 WL 253071 (1st Cir. (Mass.) 1995)
  • U.S. v. Olivier-Diaz, 13 F.3d 1 (1st Cir. (Me.) 1993)
  • In re Extradition of Howard, 996 F.2d 1320 (1st Cir. (Mass.) 1993)
  • State v. Tarsitano, 134 N.H. 730, 599 A.2d 474 (N.H. 1991)
  • U.S. v. Moreno, 947 F.2d 7 (1st Cir. (Me.) 1991)
  • U.S. v. Sabatino, 943 F.2d 94 (1st Cir. (Me.) 1991)
  • U.S. v. Hallock, 941 F.2d 36 (1st Cir. (Me.) 1991)
  • U.S. v. McMahon, 938 F.2d 1501, 34 Fed. R. Evid. Serv. 516 (1st Cir. (N.H.) 1991)
  • U.S. v. Cambara, 902 F.2d 144 (1st Cir. (Mass.) 1990)
  • U.S. v. Santana, 895 F.2d 850 (1st Cir. (N.H.) 1990)
  • Aiken v. Seifert, 1989 WL 32153 (D. Mass. 1989)
  • U.S. v. Tedeschi, 774 F.2d 511 (1st Cir. (Mass.) 1985)
  • Detenber v. Turnage, 701 F.2d 233 (1st Cir. (Mass.) 1983)
  • Withum v. O’Connor, 506 F. Supp. 1374 (D.P.R. 1981)
  • Socialist Workers Party v. Davoren, 378 F. Supp. 1245 (D. Mass. 1974)
  • U.S. v. Martinez, 102 F. Supp. 2d 39 (D. Mass. 2000)
  • U.S. v. Brito, 103 F. Supp. 2d 42 (D. Mass. 2000)
  • U.S. v. Nachef, 1998 WL 151270 (D. Mass. 1998)
  • Com. v. Selby, 426 Mass. 168, 686 N.E.2d 1316 (Mass. 1997)
  • U.S. v. Skodnek, 933 F. Supp. 1108 (D. Mass. 1996)
  • Kettenbach v. Demoulas, 901 F. Supp. 486 (D. Mass. 1995)
  • U.S. v. Chan, 901 F. Supp. 480 (D. Mass. 1995)
  • U.S. v. Arboleda, 929 F.2d 858, 32 Fed. R. Evid. Serv. 1164 (1st Cir. (N.H.) 1991)
  • Craft v. Hodel, 683 F. Supp. 289 (D. Mass. 1988)
  • U.S. v. Porter, 764 F.2d 1 (1st Cir. (Mass.) 1985)
  • State v. Andrews, 125 N.H. 158, 480 A.2d 889 (N.H. 1984)
  • State v. Burke, 427 A.2d 1302 (R.I. 1981)
  • U.S. v. Rexroad, 9 M.J. 959 (AFCMR 1980)

Teaching & affiliations

Classes / seminars

Former Clinical Teaching Associate, Suffolk University.

Professional associations and memberships

  • Massachusetts Bar Association, Member
  • National Association of Criminal Defense Attorneys, Member
  • Massachusetts Association of Criminal Defense Lawyers, Member

Languages

Spanish

Media & commentary

Selected appearances and profiles—offered as context for how courts and the press intersect in high-visibility defense work.