Dennis D. Fitzpatrick


Location: Chicago

Phone: 312.606.7473


Dennis is the Firm President and a Shareholder with Clausen Miller P.C., handling first-party property insurance, coverage and defense, including All-Risk, Energy, Builders Risk, Boiler and Machinery, and cyber risk coverage, as well as professional liability defense, construction litigation and subrogation matters.

Dennis has tried jury cases involving complex insurance litigation (including bad faith defense) and construction cases (including subrogation and design professional defense), with trials in Florida, Tennessee, Oklahoma, Wisconsin and Illinois. He has also been admitted pro hac vice in many courts around the United States, handling litigation, arbitrations and mediations. He has also prosecuted fraud cases in state and federal courts.

Dennis received his undergraduate degree from Marquette University and J.D. at DePaul University College of Law. Dennis has spent his entire legal career at Clausen Miller. In addition to Illinois, he is also licensed to practice in Washington, D.C. and Minnesota where he has handled coverage matters and litigation defense. He is also admitted to the U.S. District Courts for the Northern District of Illinois where he is a Member of the Trial Bar, the Eastern District of Wisconsin and the Northern District of Florida.

Dennis was elected to membership in the Federation of Defense and Corporate Counsel (“FDCC”) and is also a member of the Property Loss Research Bureau (“PLRB”) 2019 Large Loss Planning Committee. He has spoken at numerous industry conferences and has provided direct client presentations.

Dennis is a member of Clausen Miller’s Board of Directors and has served on several Boards of charitable organizations, including the American Cancer Society’s Greater Downtown Unit Board.


  • J.D. DePaul University College of Law
  • B.A. Marquette University

Bar Admissions

  • Illinois
  • Washington, D.C.
  • Minnesota

Court Admissions

  • U.S. District Court, Northern District of Illinois including Trial Bar
  • U.S. District Court, Eastern District of Wisconsin
  • U.S. District Court, Northern District of Florida


  • Clausen Miller Diversity Committee Chair
  • FDCC
  • PLRB Planning Committees
  • American Cancer Society's Greater Downtown Unit Board
  • T.U.F.T.
  • Marquette University Letterman


  • Leading Lawyers, 2019

Matters of Note

  • Port Authority of New York & New Jersey, et al. v. Affiliated FM Ins. Co., et al.,

    245 F.Supp.2d 563 (D.N.J. 2001)

  • Rorer Group, Inc. v. Insurance Company of North America,

    440 Pa. Super. 69, 655 A.2d 123 (Pa. Super. 1995)

  • Atlantic Mutual Insurance Companies v. Brian and Kaare Lotz,

    384 F.Supp.2d 1292 (E.D. Wisc. 2005)

  • Zahran v. Frankenmuth Mutual Ins. Co.,

    53 F.3d 334 (7th Cir. 1995)

  • Chicago

    Illinois 60603

    10 South LaSalle Street

    Chicago, Illinois 60603

    T: 312.855.1010 TF: 800.826.3505 F: 312.606.7777 Office Managing Partner: Dennis D. Fitzpatrick

  • New York

    New York 10005

    28 Liberty Street 39th Floor

    New York, New York 10005

    T: 212.805.3900 TF: 800.826.3505 F: 212.805.3939 Office Managing Partner: Tyler Jay Lory

  • Irvine

    California 92614

    17901 Von Karman Avenue

    Suite 650

    Irvine, California 92614

    T: 949.260.3100 TF: 800.826.3505 F: 949.260.3190 Office Managing Partner: Ian R. Feldman

  • Florham Park

    New Jersey 07932

    100 Campus Drive

    Florham Park, New Jersey 07932

    T: 973.410.4130 TF: 800.826.3505 F: 973.410.4169 Office Managing Partner: Carl M. Perri

  • Michigan City

    Indiana 46360

    200 Commerce Square

    Michigan City, Indiana 46360

    T: 219.262.6106 TF: 800.826.3505 F: 312.606.7777 Office Managing Partners: Paige M. Neel, Kimbley A. Kearney

  • Appleton

    Wisconsin 54914

    4650 W. Spencer Street

    Appleton, Wisconsin 54914

    T: 920.560.4658 TF: 800.826.3505 F: 920.968.4650 Office Managing Partner: Patrick L. Breen

  • Stamford

    Connecticut 06902

    68 Southfield Avenue

    2 Stamford Landing Suite 100

    Stamford, Connecticut 06902

    T: 203.921.0303 TF: 800.826.3505 F: 212.805.3939 Office Managing Partner: Matthew J. Van Dusen

  • Tampa

    Florida 33609

    4830 West Kennedy Boulevard

    Suite 600

    Tampa, Florida 33609

    T: 813.509.2578 TF: 800.826.3505 F: 312.606.7777 Office Managing Partner: Anne E. Kevlin

  • San Francisco

    California 94111

    100 Pine Street

    Suite 1250

    San Francisco, California 94111

    T: 415.745.3598 TF: 800.826.3505 F: 949.260.3190 Office Managing Partner: Ian R. Feldman