Colleen Bannon

Colleen Bannon: Attorney with Marshall Dennehey Warner Coleman & Goggin, P.C.
  • Shareholder; Director of Legal Information Resources at Marshall Dennehey Warner Coleman & Goggin, P.C. (503 Attorneys)
  • 2000 Market Street, Suite 2300, Philadelphia, PA 19103
    View Colleen Bannon's office location
  • Colleen Bannon is a shareholder as well as the Director of Research and Legal Information with Marshall, Dennehey, Warner, Coleman & Goggin. Her practice is devoted largely to employment discrimination, civil rights and public entities liability.
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Colleen Bannon holds the position of director of research & legal information, and is a shareholder at Marshall Dennehey. Colleen still maintains her law practice, which focuses on privacy and data security, where she has represented numerous medical providers, retailers, e-commerce and public entity clients, in data breach actions. She is also experienced in employment discrimination, civil rights and public entity liability defense.

In addition to being a practicing attorney and an administrative director, Colleen also leads our firm's E-Discovery program. Her significant litigation and IT background allow her to work closely with other attorneys in the firm, to provide our clients with cutting-edge legal advice and guidance in this complex and evolving area of law. Colleen is also highly experienced with a variety of other litigation support tools such as Recommind and Access Data's Summation Pro. This deep understanding of technology applications, is significant to Colleen's employer and business owner clients, particularly when dealing with exposure in privacy and data security.

Colleen has spoken at numerous conferences, as well as internal seminars, on the topics of electronic discovery in litigation, social media in the workplace, and privacy and data security. Colleen was an author for the Labor Report, a monthly publication of the Pennsylvania Chamber of Business and Industry which features articles on employment law issues including sexual harassment, disability and racial discrimination.

In 1980, Colleen began employment with Marshall Dennehey Warner Coleman & Goggin as a member of the firm's support staff. While continuing full-time employment with the firm, first as a secretary and then as an applications specialist with the firm's IT department, Colleen obtained her Bachelor of Arts degree, magna cum laude, from Holy Family College in 1992. She then went on to receive her juris doctor from Temple University, in 1996.

Classes/Seminars Taught

Using Technology to Find Facts Fast, Insurance Carrier's 2017 Panel Counsel Summit, May 8 - 10, 2017

The Many Considerations Pertaining to the ESI 30(b)(6) Witness, International Association of Defense Counsel, Construction Law Committee, Annual Meeting, 2008

E-Discovery Law Update, Pennsylvania Defense Institute Annual Meeting, 2007

Electronic Data: When Delete Does Not Mean Goodbye, PLRB Claims Conference, 2006 Annual Meeting

Electronic Discovery and the Federal Rules of Civil Procedure, Manufacturers Alliance/MAPI, 2006


Colleen Bannon and Diana Cortes Appointed Co-Chairs of Philadelphia Bar Associations Federal Courts Committee

February 15, 2017

Marshall Dennehey attorneys Colleen Bannon, Shareholder and Director of Legal Information Resources, and professional liability associate, Diana P. Cortes, have been appointed the 2017 Co-Chairs of the Philadelphia Bar Association's Federal Courts Committee. Ms. Bannon also served as the committee'...

Colleen Bannon Appointed Vice-Chair of the Philadelphia Bar Associations Federal Courts Committee

December 21, 2015

Colleen Bannon, Shareholder and Director of Legal Information Resources, has been appointed a Vice-Chair of the Philadelphia Bar Association's Federal Courts Committee. The committee serves as an informational liaison between the federal courts covering the Eastern District of Pennsylvania and...


On The Pulse ... Marshall Dennehey Invests in Technology to Benefit Clients
Defense Digest Article • March 1, 2015

As Director of Legal Information Services at Marshall Dennehey, I frequently speak to our 485 attorneys about ways they can use technology to provide innovative and cost-efficient legal services to our clients. When posed questions about which..., Defense Digest, Vol. 21, No. 1, March 2015Defense Digest is prepared by Marshall Dennehey Warner Coleman & Goggin to provide information on recent legal developments of interest to our readers. This publication is not intended to provide legal...

Areas of Practice (3)

  • Employment Law
  • Public Entity and Civil Rights Litigation
  • Privacy and Data Security

Education & Credentials

Contact Information:
(215) 575-2852  Phone
(215) 575-0856  Fax
University Attended:
Holy Family College, Philadelphia, Pennsylvania, B.A., magna cum laude, 1992
Law School Attended:
Temple University School of Law, Philadelphia, Pennsylvania, J.D., 1996
Year of First admission:
1996, Pennsylvania; 1996, New Jersey

Associations & Memberships

•Defense Research Institute
•Pennsylvania Bar Association
•Philadelphia Bar Association, Chair, Federal Courts Committee, 2017; Vice-Chair, 2016

Reported Cases:
Published Works: Pennsylvania Supreme Court Addresses Important PA Human Relations Act Issues, Defense Digest, Vol. 5, No. 2, 1999 and Pennsylvania Law Weekly, June 6, 1999; Labor Report, a monthly publication of the Pennsylvania Chamber of Business and Industry; Employment Law Cases -Recent Developments, CounterPoint, a publication of the Pennsylvania Defense Institute; A Recreational Hazard: Governmental Immunity: New Cases May Result in Greater Liability for Municipalities Under the Real Property Exception, Pennsylvanian, The Magazine of Local Governments; Governmental Immunity: Greater Liability Under The Real Property Exception, Defense Digest, Vol. 3, No. 5, 1997
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