Tyson Arbuthnot
Thomas D. Blanford
Ann M. Blessing
Robert J. Breakstone
Dennis J. Callahan
Thomas H. Carlson
Walter S. Chen
Linda L. Daube
Robert C. Goodman
Dennis C. Huie
Allan J. Joseph
Suhani Kamdar
Christine S. Liyanto
James Robert Maxwell
Joseph C. McGowan
Patricia A. Meagher
Suzanne M. Mellard
Alexis J. Morris
Neil H. O'Donnell
Robert M. Osier
Joseph W. Rogers
D. Kevin Shipp
Aaron P. Silberman
Renée D. Wasserman
Margot Wenger
Alan J. Wilhelmy
Paul M. Zieff


Dennis J. Callahan
Associate

Areas of Practice

Mr. Callahan is a member of the firm’s Government Contracts and Complex Commercial Litigation Practice Groups.

Professional Qualifications

Mr. Callahan’s practice focuses on government contracts litigation.  He has extensive contract and accounting dispute experience involving aircraft sales and maintenance agreements, and financial derivatives related to construction bonds and metals sales. He has drafted dispositive and appellate briefs in state and federal court and before other dispute resolution bodies.

Mr. Callahan also has significant experience drafting technical documents and correspondence to government agencies designed to avoid disputes involving highly regulated segments of the telecommunications industry. Additionally, he has litigated and negotiated resolution of intellectual property disputes involving patents, copyrights, and trademarks.

Mr. Callahan frequently contributes to bar publications and scholarly journals. Among other publications, his articles have appeared in the William & Mary Law Review, Cardozo Law Review, Legal Times (Washington), New York Law Journal, and The Federal Lawyer.

Clerkships

Hon. D. Brooks Smith, United States Court of Appeals for the Third Circuit,
2004-05 Term

Hon. Jackson L. Kiser, United States District Court for the Western District of Virginia, 2003-04 Term

Education

J.D., William & Mary Law School, 2003

M.B.A., William & Mary Graduate School of Business, 2003

B.A., University of New Hampshire, 1989

Bar Admissions
California - 2007
New York - 2004




Practices
Complex Commercial Litigation
Government Contracts


Contact
Robert Dollar Building, 10th Floor
311 California Street
San Francisco, CA 94104
Phone: 415.956.2828
Fax: 415.956.6457
dcallahan@rjo.com