Representative Matters

Patrick F. Koenen is a partner in Hinshaw's Appleton office. Clients appreciate Mr. Koenen's ability to effectively evaluate the strengths and weaknesses of a dispute and communicate a thoughtful action plan, enabling them to make wise decisions in difficult circumstances. He provides real solutions to his clients' legal challenges and has tried to verdict more than 60 lawsuits in both state and federal courts. He has also resolved hundreds of cases through direct negotiations, mediation, arbitration and effective motion practice.

Mr. Koenen's clients include doctors, hospitals, long-term care facilities and licensed professionals in the healthcare industry.  He also represents lawyers, brokers, business owners and manufacturers and their insurance carriers in disputes involving allegations of professional misconduct, complex torts and contract interpretation, as well as licensing and regulatory matters.

Mr. Koenen is a firm leader, having served Hinshaw as the partner-in-charge of the Appleton office, a member of the firm's Executive Committee, Regional Director of the Wisconsin and Minnesota offices, practice group leader and currently as a board-level director of the firm's consulting group, Hinshaw Consulting, LLC.  He is the President of the St. Elizabeth Hospital Foundation Board of Directors, and has served on numerous other boards and committees for nonprofit organizations. 

Professional Affiliations

  • State Bar of Wisconsin
  • Outagamie County Bar Association
  • Wisconsin Defense Counsel
  • Defense Research Institute
  • American Health Lawyers Association

Honors & Awards

  • Holds the AV® Peer Review Rating from Martindale-Hubbell, its highest rating for ethics and legal ability

Representative Matters

Representative cases that Mr. Koenen has tried to verdict include:

  • Herron v. MMIC Insurance Co., 13-CV-91, Outagamie County (2015). A three-week medical malpractice case involving a 47-year-old patient who underwent a cardiac catheterization procedure with stenting and died at home four hours after the procedure due to ventricular fibrillation. The case involved allegations the defendants discharged the patient too early and failed to recognize symptoms of oncoming problems. Defense verdict on liability.
  • Shultis v. Woodside Ranch, LLC, 10-CV-521, Juneau County (2014).  Personal injury claim by three plaintiffs who were injured as a result of a horse "stampede" during a recreational trail ride. Defense verdict on liability.
  • Timm v. Northeast Wisconsin Retina Associates, S.C., 11-CV-490, Brown County (2013).  Medical malpractice claim alleging that two retinal surgeons failed to timely diagnose and treat endophthalmitis following retinal surgery. This eye infection led to the removal of the patient's eye. Defense verdict on liability.
  • General Properties LLC v. Liberty International Underwriters, 08-CV-817, Outagamie County (2010). Legal malpractice claim involving allegation that law firm negligently failed to recognize and advise client about right of first refusal in a commercial lease prior to sale of building. Defense verdict on damages.

  • Paffenroth v. C.H. Koch Plumbing & Heating, Inc., 05-CV-358, Winnebago County (2006). Personal injury claim by an elderly woman alleging improper installation of water heater caused severe burns and other injuries. Defense verdict on liability.
  • Johnson v. Chung, M.D., 04-CV-1929, Brown County (2006). Medical malpractice claim asserting a physician caused a staph infection while administering trigger-point injections for pain relief resulting in a bilateral amputation of the patient’s legs below the knee. Defense verdict on liability.
  • Goehe v. Montezon Insurance & Real Estate, 95-CV-5, Vilas County (1997). E&O claim by a business owner alleging an insurance agent failed to procure adequate property and business loss coverage for an snowmobile dealership destroyed by a fire. Defense verdict on liability.
  • Fischer v. Chiro-Health Chiropractic Care, 96-CV-330, Sheboygan County (1997). Chiropractic malpractice claim by a patient alleging a chiropractic adjustment caused neurological injuries to the cervical spine resulting in multiple surgeries and disability. Defense verdict on liability.
  • Wilson v. Traylor Brothers, Inc., Case No. 92-CV-3597, Milwaukee County (1994). Personal injury claim by a worker involved in the construction of the deep tunnel sewer system in the City of Milwaukee. Defense verdict on liability.
  • Kasnia v. Northwest Airlines, Inc., Case No. 87-CV-1133, U.S. District Court, Eastern District of Wisconsin (1990). Wrongful death lawsuit arising out of a March 4, 1987, crash of a Northwest Airlines aircraft in Detroit, Michigan. Defense verdict on liability.

Mr. Koenen has also argued numerous cases before the Wisconsin Supreme Court, Wisconsin Courts of Appeal and the U.S. Court of Appeals for the Seventh Circuit including:

  • Office of Lawyer Regulation v. Winkel, 12AP1845-D, (argued to Wisconsin Supreme Court on February 5, 2015)
  • Hannemann v. Boyson, 282 Wis. 2d 664, 698 N.W.2d 714 (2005)
  • Hannemann v. Boyson, 273 Wis. 2d 457, 681 N.W.2d 561 (Ct. App. 2004)
  • Rogers v. AAA Wire Products, Inc., 182 Wis. 2d 263, 513 N.W.2d 643 (Ct. App. 1994), Prod.Liab.Rep. (CCH) P 13,870
  • Allianz Underwriters Ins. Co. v. Crescent Garage, Inc., 145 Wis. 2d 287, 426 N.W.2d 104 (Ct. App., 1988)
  • Matter of Disciplinary Proceedings Against Schwartz, 134 Wis. 2d 18, 397 N.W.2d 98, 55 USLW 2437, (1986)


He also has given numerous lectures and seminar presentations to various groups and clients including:

  • "The Doctor Will See You Now: The Legalities of Telemedicine," State Bar of Wisconsin, Madison, Wisconsin, May 2016.
  • "Lawsuits & Licensing: What you Should Know," Presentation to Wisconsin Association of Nurse Anesthetists, Appleton, Wisconsin, October 2014.

  • "Discovery of Electronic Records and Metadata in Litigation," Presentation to Injured Patients and Families Compensation Fund, September 2014.

  • "Never Events," Hinshaw’s Health Care Law Breakfast Briefing Series, Appleton, Wisconsin, December 2009.
  • "The Ethical, Legal and Business Considerations of Self-Reporting Regulatory Violations," Hinshaw’s Health Care Law Breakfast Briefing Series, Appleton, Wisconsin, September 2009.
  • "The Red Flag Rules: Are You in Compliance?" workshop sponsored by Hinshaw and Schenck Health Services Solutions, Milwaukee and Appleton, Wisconsin, March 2009.
  • "Strategies for Preventing the Introduction of Prior Bad Acts of a Defendant Health Care Provider," ProAssurance Wisconsin, Orlando, Florida, March 2009.


Mr. Koenen is the author of an award-winning article: "Bad Faith and Negligence Approaches to Insurer Excess Liability for Failing to Settle Third-Party Claims: Problems and Suggestions," Vol. 54, Issue 2, Defense Counsel Journal (April 1987).

Hinshaw Publications


Mr. Koenen is married to Kelly L. Koenen, also an attorney. He and Kelly are the proud parents of three children.

Community/Civic Activities

  • St. Elizabeth Hospital Foundation, Board of Directors, President


J.D., Marquette University School of Law, 1986

B.A., Marquette University, 1983