Patrick F. Mastrian III

Patrick Mastrian III, Amundsen Davis LLC Photo


When it comes to litigation, you can’t always see what’s around the corner. Patrick’s ability to adapt quickly to changing situations is one of the many reasons clients find him to be an invaluable business partner and an integral member of their team. He helps navigate the dynamic litigation process while encouraging a practical and objective perspective on the facts of each case.  

Patrick has extensive litigation experience having first-chaired more than 40 jury trials and numerous bench trials. He has successfully tried cases involving misappropriation of trade secrets, unfair competition, breach of contract, shareholder breach of fiduciary duty, shareholder derivative claims, professional liability, post-employment restrictive covenant agreements, and malfeasance in the administration of a $63MM estate. His professional liability experience includes representing individuals facing malpractice claims in the accounting, legal and medical fields. He represents clients in various industries, including financial, telecommunications, construction, manufacturing, and health care. Recognizing some clients prefer to avoid the uncertainty of trial, Patrick also guides clients through arbitration and mediation as alternative methods of dispute resolution.


Membership & Involvement

  • Member: Indiana Bar Association; Indianapolis Bar Association; Hancock Bar Association


  • Martindale-Hubbell AV® Preeminent™ rated
  • Selected to The Best Lawyers in America® in Commercial Litigation: 2024

Resources & Insights


Valparaiso University School of Law, J.D., 1994

University of Pittsburgh, B.A., 1991


  • Indiana
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