Dennis is a retired bankruptcy judge, having served on the bankruptcy bench for the District of Minnesota for nearly thirty years from February 24, 1984 to July 1, 2013. He has extensive experience in presiding over all types of bankruptcies, business and personal, reorganizations and liquidations, simple and complex. As a bankruptcy judge, Dennis also has extensive experience in mediating bankruptcy disputes between parties.
Dennis served as Chief Bankruptcy Judge for the District of Minnesota from 1993 to 2000 and spearheaded the transition of the court's records from paper to electronic, along with Internet filing and remote access to case files. He served as a pro tem member of the Bankruptcy Appellate Panel for the Eighth Circuit from its inception in 1996 to June 30, 2013. He also served on the Board of Governors of the National Conference of Bankruptcy Judges, a judicial professional and policy organization of bankruptcy judges nationwide, from 1994 through 1997.
Since joining Manty & Associates, P.A., Dennis has continued mediating disputes both as a mediator as well as representing parties in mediations. He represents clients in bankruptcy matters and commercial disputes. Dennis has also been retained and served as an expert witness in matters concerning alter ego, malpractice and a dispute concerning attorneys’ fees.
B.A., University of Minnesota Duluth
J.D., William Mitchell Law School
U.S. District Court, District of Minnesota
National Conference of Bankruptcy Judges’ Division
Dennis has been a regular speaker and author of bankruptcy materials for Minnesota Continuing Legal Education from 1985 through 2012, including participating, authoring and teaching in the following presentations:
Basics of Bankruptcy Practice – Fundamentals of Practice Before the Court, September 26, 2002 Judge Dennis D. O’Brien and Peter B. Stein.
Effective Advocacy in Bankruptcy Court, September 22, 2003 Judge Dennis D. O’Brien and Monica L. Clark.
Ethical and Local Rule Requirements on Representation, March 9, 2004 William I. Kampf and Judge Dennis D. O’Brien.
Chapter 13 Roundtable, September 23, 2004 Judge Dennis D. O'Brien, Margaret H. Culp and Gregory J. Wald.
Overview of the Most Important Areas of Change With the Bankruptcy Abuse Prevention and Consumer Protection Act of 2005, June 20, 2005 Judge Dennis D. O’Brien.
Chapter 13 Hot Topics: Tips and Strategies for Changing Times, September 12, 2005 Judge Dennis D. O’Brien, Ian T. Ball, Margaret H. Culp, Thomas E. Johnson and Michael J. Stepan.
Through the Looking Glass Again: Chapter 13 in the post-BAPCPA Era September 21, 2006 Judge Dennis D. O'Brien, Thomas E. Johnson, Patti J. Sullivan and Margaret H. Culp.
E-Discovery and Computer Forensics in Bankruptcy Cases,”\ September 20, 2007 Judge Dennis D. O'Brien and Mark Lanterman.
Hidden Traps of Small Business Chapter 11s, October 6, 2008 Judge Dennis D. O’Brien, Kenneth Corey-Edstrom and Sarah J. Wencil.
Bankruptcy 101: Adversary Proceedings, October 5, 2009 Judge Dennis D. O’Brien & Cynthia L. Hegarty.
Courtroom Exhibits in the Electronic Era: The Bankruptcy Court’s E-Transition Moves On! October 4, 2010 Judge Dennis D. O’Brien and Aaron Lahn.
2011 Case Law Update and Bankruptcy Trends,” September 12, 2011 Judge Dennis D. O’Brien, Craig W. Andresen, Katherine A. Constantine and William J. Fisher.
Case Law Update and Bankruptcy Trends, October 2, 2012 Judge Dennis D. O’Brien, Craig W. Andresen and Katherine A. Constantine.